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Go Math Grade 4 Chapter 9 Answer Key Pdf Relate Fractions and Decimals

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Relate Fractions and Decimals Go Math Grade 4 Chapter 9 Answer Key Pdf

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Lesson 1: Relate Tenths and Decimals

Lesson 2: Relate Hundredths and Decimals

Lesson 3: Equivalent Fractions and Decimals

Lesson 4: Relate Fractions, Decimals, and Money

Lesson 5: Problem Solving • Money

Mid-Chapter Checkpoint

Lesson 6: Add Fraction Parts of 10 and 100

Lesson 7: Compare Decimals

Review/Test

Common Core – New – Page No. 499

Relate Tenths and Decimals

Write the fraction or mixed number and the decimal shown by the model.

Question 1
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 1

Answer:
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 1

Question 2.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 2
Type below:
________

Answer:
1\(\frac{2}{10}\)

Explanation:
The model is divided into 10 equal parts. Each part represents one-tenth.
1 2/10 is 1 whole and 2 tenths.

Question 3.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 3
Type below:
________

Answer:
2\(\frac{3}{10}\) = 2.3

Explanation:
grade 4 chapter 9 Common Core Image 1 499

Question 4.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 4
Type below:
________

Answer:
4\(\frac{8}{10}\) = 4.8

Explanation:
grade 4 chapter 9 Common Core Image 2 499

Write the fraction or mixed number as a decimal.

Question 5.
\(\frac{4}{10}\)
_____

Answer:
0.4

Explanation:
Write down 4 with the decimal point 1 space from the right (because 10 has 1 zero)
0.4

Compare Fractions and Decimals Lesson 1 Answer Key Question 6.
3 \(\frac{1}{10}\)
_____

Answer:
3.1

Explanation:
Multiply 3 x 10 = 30.
Add 30 + 1 = 31.
So, 31/10.
Write down 31 with the decimal point 1 space from the right (because 10 has 1 zero)
3.1

Question 7.
\(\frac{7}{10}\)
_____

Answer:
0.7

Explanation:
Write down 7 with the decimal point 1 space from the right (because 10 has 1 zero)
0.7

Question 8.
6 \(\frac{5}{10}\)
_____

Answer:
6.5

Explanation:
Multiply 6 x 10 = 60.
Add 60 + 5 = 65.
So, 65/10.
Write down 35 with the decimal point 1 space from the right (because 10 has 1 zero)
6.5

Question 9.
\(\frac{9}{10}\)
_____

Answer:
0.9

Explanation:
Write down 9 with the decimal point 1 space from the right (because 10 has 1 zero)
0.9

Problem Solving

Question 10.
There are 10 sports balls in the equipment closet. Three are kickballs. Write the portion of the balls that are kickballs as a fraction, as a decimal, and in word form.
Type below:
_________

Answer:
\(\frac{3}{10}\) = 0.3 = three tenths

Explanation:
There are 10 sports balls in the equipment closet. Three are kickballs. So, 3/10 kickballs are available.

Question 11.
Peyton has 2 pizzas. Each pizza is cut into 10 equal slices. She and her friends eat 14 slices. What part of the pizzas did they eat? Write your answer as a decimal.
_________

Answer:
1.4 pizzas

Explanation:
Peyton has 2 pizzas. Each pizza is cut into 10 equal slices.
So, the total number of slices = 2 x 10 = 20.
She and her friends eat 14 slices.
So, they ate 1 whole pizza and 4 parts out of 10 slices in the second pizza.
1 4/10 = 14/10 = 1.4 pizzas

Common Core – New – Page No. 500

Lesson Check

Question 1.
Valerie has 10 CDs in her music case. Seven of the CDs are pop music CDs. What is this amount written as a decimal?
Options:
a. 70.0
b. 7.0
c. 0.7
d. 0.07

Answer:
c. 0.7

Explanation:
Valerie has 10 CDs in her music case. Seven of the CDs are pop music CDs.
Seven CDs out of 10 CDs = 7/10 =0.7

Question 2.
Which decimal amount is modeled below?
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 5
Options:
a. 140.0
b. 14.0
c. 1.4
d. 0.14

Answer:
c. 1.4

Explanation:
1\(\frac{4}{10}\)
Multiply 10 x 1 = 10.
Add 10 + 4 = 14.
So, 14/10 = 1.4.

Spiral Review

Question 3.
Which number is a factor of 13?
Options:
a. 1
b. 3
c. 4
d. 7

Answer:
a. 1

Explanation:
13 has 1 and 13 as its factors.

Question 4.
An art gallery has 18 paintings and 4 photographs displayed in equal rows on a wall, with the same number of each type of art in each row. Which of the following could be the number of rows?
Options:
a. 2 rows
b. 3 rows
c. 4 rows
d. 6 rows

Answer:
a. 2 rows

Explanation:
An art gallery has 18 paintings and 4 photographs displayed in equal rows on a wall, with the same number of each type of art in each row. So, 18 paintings and 4 photographs need to be divided into equal parts.
18/2 = 9; 4/2 = 2.
2 rows can be possible with 9 pictures and 2 pictures in each row.

Question 5.
How do you write the mixed number shown as a fraction greater than 1?
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 6
Options:
a. \(\frac{32}{5}\)
b. \(\frac{14}{4}\)
c. \(\frac{6}{4}\)
d. \(\frac{4}{4}\)

Answer:
b. \(\frac{14}{4}\)

Explanation:
3\(\frac{2}{4}\) = 14/4. 14 divided by 4 is equal to 3 with a remainder of 2. The 3 is greater than 1. So, 14/4 > 1.

Question 6.
Which of the following models has an amount shaded that is equivalent to the fraction \(\frac{1}{5}\)?
a. Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 7
b. Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 8
c. Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 9
d. Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 10

Answer:
c. Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 9

Explanation:
a. \(\frac{2}{3}\)
b. \(\frac{5}{10}\) = \(\frac{1}{2}\)
c. \(\frac{2}{10}\) = \(\frac{1}{5}\)
d. \(\frac{1}{10}\)

Page No. 503

Question 1.
Shade the model to show \(\frac{31}{100}\).
Write the amount as a decimal.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 11
_____

Answer:
grade 4 chapter 9 Relate Fractions and Decimals Image 1 503

Write the fraction or mixed number and the decimal shown by the model.

Question 2.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 12
Type below:
_________

Answer:
\(\frac{68}{100}\) = 0.68

Explanation:
68 boxes are shaded out of 100 boxes.

Question 3.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 13
Type below:
_________

Answer:
\(\frac{8}{100}\) = 0.08

Explanation:
8 boxes are shaded out of 100 boxes.

Question 4.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 14
Type below:
_________

Answer:
6\(\frac{19}{100}\) = 6.19

Explanation:
0.5 is 5 tenths and 0.50 is 5 tenths 0 hundredths. Since both 0.5 and 0.50 have 5 tenths and no hundredths, they are equivalent

Write the fraction or mixed number and the decimal shown by the model.

Question 5.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 15
Type below:
_________

Answer:
1\(\frac{83}{100}\) = 1.83

Explanation:
1 whole number(all the square boxes are shaded) and 83 square boxes shaded out from 100 boxes.

Go Math Book Grade 4 Lesson 9.2 Relate Hundredths and Decimals Question 6.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 16
Type below:
_________

Answer:
\(\frac{75}{100}\)

Explanation:
75 boxes are shaded out of 100 boxes.

Question 7.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 17
Type below:
_________

Answer:
\(\frac{47}{100}\) = 0.47

Explanation:
The point lies between \(\frac{40}{100}\) and \(\frac{50}{100}\). The number of lines in between \(\frac{40}{100}\) and \(\frac{50}{100}\) are 10. The point is placed at the 7th line. So, 40 + 7 = 47. Answer = \(\frac{47}{100}\)

Practice: Copy and Solve Write the fraction or mixed number as a decimal.

Question 8.
\(\frac{9}{100}\) = _____

Answer:
0.09

Explanation:
Write down 9 with the decimal point 2 spaces from the right (because 100 has 2 zeros)

Question 9.
4 \(\frac{55}{100}\) = _____

Answer:
4.55

Explanation:
4 \(\frac{55}{100}\) = \(\frac{455}{100}\)
Write down 455 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, 4.55 is the answer

Question 10.
\(\frac{10}{100}\) = _____

Answer:
0.10 = 0.1

Explanation:
Write down 10 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, 0.10 =0.1 is the answer

Question 11.
9 \(\frac{33}{100}\) = _____

Answer:
9.33

Explanation:
9 \(\frac{33}{100}\) = \(\frac{933}{100}\)
Write down 933 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, 9.33 is the answer.

Go Math Grade 4 Chapter 9 Pdf Question 12.
\(\frac{92}{100}\) = _____

Answer:
0.92

Explanation:
Write down 92 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, 0.92 is the answer

Question 13.
14 \(\frac{16}{100}\) = _____

Answer:
14.16

Explanation:
14 \(\frac{16}{100}\) = \(\frac{1416}{100}\)
Write down 1416 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, 14.16 is the answer.

Page No. 504

Question 14.
Shade the grids to show three different ways to represent \(\frac{16}{100}\) using models.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 18
Type below:
_________

Answer:
grade 4 chapter 9 Relate Fractions and Decimals Image 1 504

Question 15.
Describe Relationships Describe how one whole, one-tenth, and one hundredth are related.
Type below:
_________

Answer:
One whole = 1.00
One tenth: 0.1
One hundredth: 0.01
One whole is 10 times the one-tenth, and one-tenth is 10 times the one hundredth.

Question 16.
Shade the model to show 1 \(\frac{24}{100}\). Then write the mixed number in decimal form.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 19
_____

Answer:
grade 4 chapter 9 Relate Fractions and Decimals Image 2 504
1\(\frac{24}{100}\) = \(\frac{124}{100}\) = 1.24

Question 17.
The Memorial Library is 0.3 mile from school. Whose statement makes sense? Whose statement is nonsense? Explain your reasoning.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 20
Type below:
_________

Answer:
The boy’s statement makes sense. Because The Memorial Library is 0.3 miles from the school. Digit 3 in the tenths place after the first place of decimal.
The girl’s statement makes non-sense. Because there she said 3 miles that is not equal to 0.3 miles.

Common Core – New – Page No. 505

Relate Hundredths and Decimals

Write the fraction or mixed number and the decimal shown by the model.

Question 1.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 21

Answer:
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 21

Question 2.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 22
Type below:
_________

Answer:
\(\frac{29}{100}\) = 0.29

Explanation:
0.20 names the same amount as 20/100. So, the given point is at 29/100 = 0.29

Question 3.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 23
Type below:
_________

Answer:
1\(\frac{54}{100}\) = 1.54

Explanation:
From the given image, one model is one whole and another model 54 boxes shaded out of 100. So, the answer is 1\(\frac{54}{100}\) = 1.54

Question 4.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 24
Type below:
_________

Answer:
4\(\frac{62}{100}\) = 4.62

Explanation:
4.60 names the same amount as 4\(\frac{60}{100}\). So, the given point is at 4\(\frac{62}{100}\) = 4.62

Write the fraction or mixed number as a decimal.

Question 5.
\(\frac{37}{100}\)
_____

Answer:
0.37

Explanation:
Write down 37 with the decimal point 2 spaces from the right (because 100 has 2 zeros). 0.37

Question 6.
8 \(\frac{11}{100}\)
_____

Answer:
8.11

Explanation:
8\(\frac{11}{100}\) = \(\frac{811}{100}\)
Write down 811 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, 8.11 is the answer.

Question 7.
\(\frac{98}{100}\)
_____

Answer:
0.98

Explanation:
Write down 98 with the decimal point 2 spaces from the right (because 100 has 2 zeros). 0.98

Question 8.
25 \(\frac{50}{100}\)
_____

Answer:
25.50

Explanation:
25\(\frac{50}{100}\) = \(\frac{2550}{100}\)
Write down 2550 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, 25.50 is the answer.

Question 9.
\(\frac{6}{100}\)
_____

Answer:
0.06

Explanation:
Write down 6 with the decimal point 2 spaces from the right (because 100 has 2 zeros). 0.06

Problem Solving

Question 10.
There are 100 pennies in a dollar. What fraction of a dollar is 61 pennies? Write it as a fraction, as a decimal, and in word form.
Type below:
_________

Answer:
\(\frac{61}{100}\) pennies = 0.61 = sixty-one hundredths

Explanation:
There are 100 pennies in a dollar. So, for 61 pennies, there are \(\frac{61}{100}\) pennies = 0.61 = sixty-one hundredths.

Question 11.
Kylee has collected 100 souvenir thimbles from different places she has visited with her family. Twenty of the thimbles are carved from wood. Write the fraction of thimbles that are wooden as a decimal.
_________

Answer:
It is easier to work with decimals then fractions because it is like adding whole numbers in a normal way.

Common Core – New – Page No. 506

Lesson Check

Question 1.
Which decimal represents the shaded section of the model below?
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 25
Options:
a. 830.0
b. 83.0
c. 8.30
d. 0.83

Answer:
d. 0.83

Explanation:
The model is divided into 100 equal parts. Each part represents one hundredth. 83 boxes are shaded out of 100. So, the answer is \(\frac{83}{100}\) = 0.83

Question 2.
There were 100 questions on the unit test. Alondra answered 97 of the questions correctly. What decimal represents the fraction of questions Alondra answered correctly?
Options:
a. 0.97
b. 9.70
c. 90.70
d. 970.0

Answer:
a. 0.97

Explanation:
There were 100 questions on the unit test. Alondra answered 97 of the questions correctly. So, \(\frac{97}{100}\) questions answered correctly. = 0.97

Spiral Review

Question 3.
Which is equivalent to \(\frac{7}{8}\)?
Options:
a. \(\frac{5}{8}+\frac{3}{8}\)
b. \(\frac{4}{8}+\frac{1}{8}+\frac{1}{8}\)
c. \(\frac{3}{8}+\frac{2}{8}+\frac{2}{8}\)
d. \(\frac{2}{8}+\frac{2}{8}+\frac{1}{8}+\frac{1}{8}\)

Answer:
c. \(\frac{3}{8}+\frac{2}{8}+\frac{2}{8}\)

Explanation:
c. \(\frac{3}{8}+\frac{2}{8}+\frac{2}{8}\) = \(\frac{7}{8}\)

Question 4.
What is \(\frac{9}{10}-\frac{6}{10}\)?
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 26
Options:
a. \(\frac{1}{10}\)
b. \(\frac{3}{10}\)
c. \(\frac{4}{10}\)
d. \(\frac{6}{10}\)

Answer:
b. \(\frac{3}{10}\)

Explanation:
\(\frac{9}{10}-\frac{6}{10}\). From 9 parts, 6 parts are removed. So, the remaining positions are 3.

4th Grade Go Math Relate Tenths and Decimals Question 5.
Misha used \(\frac{1}{4}\) of a carton of 12 eggs to make an omelet. How many eggs did she use?
Options:
a. 2
b. 3
c. 4
d. 6

Answer:
b. 3

Explanation:
Misha used \(\frac{1}{4}\) of a carton of 12 eggs to make an omelet. \(\frac{1}{4}\) x 12 = 3 eggs.

Question 6.
Kurt used the rule add 4, subtract 1 to generate a pattern. The first term in his pattern is 5. Which number could be in Kurt’s pattern?
Options:
a. 4
b. 6
c. 10
d. 14

Answer:
d. 14

Explanation:
Kurt used the rule add 4, subtract 1 to generate a pattern. The first term in his pattern is 5. The pattern numbers are 5, 8, 11, 14, 17, 20, etc. So, the answer is 14.

Page No. 509

Question 1.
Write \(\frac{4}{10}\) as hundredths.
Write \(\frac{4}{10}\) as an equivalent fraction.
\(\frac{4}{10}\) =\(\frac{4 × ■}{10× ■}\)
Write \(\frac{4}{10}\) as a decimal.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 27
Type below:
_________

Answer:
\(\frac{40}{100}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 1 509
0.40

Explanation:
Write \(\frac{4}{10}\) as an equivalent fraction.
\(\frac{4}{10}\) =\(\frac{4 × 10}{10× 10}\) = \(\frac{40}{100}\)
6 tenths is the same as 6 tenths 0 hundredths. So the decimal form = 0.40

Write the number as hundredths in fraction form and decimal form.

Question 2.
\(\frac{7}{10}\)
Type below:
_________

Answer:
\(\frac{70}{100}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 2 509
0.70

Explanation:
Write \(\frac{7}{10}\) as an equivalent fraction.
\(\frac{7}{10}\) =\(\frac{7 × 10}{10× 10}\) = \(\frac{70}{100}\)
7 tenths is the same as 7 tenths 0 hundredths. So the decimal form = 0.70

Question 3.
0.5
Type below:
_________

Answer:
\(\frac{50}{100}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 3 509
0.50

Explanation:
Write 0.5 = \(\frac{5}{10}\) as an equivalent fraction.
\(\frac{5}{10}\) =\(\frac{5 × 10}{10× 10}\) = \(\frac{50}{100}\)
5 tenths is the same as 5 tenths 0 hundredths and also 0.5

Question 4.
\(\frac{3}{10}\)
Type below:
_________

Answer:
\(\frac{30}{100}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 4 509
0.30

Explanation:
Write \(\frac{3}{10}\) as an equivalent fraction.
\(\frac{3}{10}\) =\(\frac{3 × 10}{10× 10}\) = \(\frac{30}{100}\)
3 tenths is the same as 3 tenths 0 hundredths. So the decimal form = 0.30

Write the number as tenths in fraction form and decimal form.

Question 5.
0.40
Type below:
_________

Answer:
\(\frac{4}{10}\) = 0.4

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 1 509
There are no hundredths.
0.40 is equivalent to 4 tenths.
Write 0.40 as 4 tenths = 0.4 = \(\frac{4}{10}\)

Question 6.
\(\frac{80}{100}\)
Type below:
_________

Answer:
\(\frac{8}{10}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 5 509
0.8

Explanation:
10 is a common factor of the numerator and the denominator.
\(\frac{80}{100}\) = \(\frac{80 ÷ 10}{100 ÷ 10}\) = \(\frac{8}{10}\)
0.8

Question 7.
\(\frac{20}{100}\)
Type below:
_________

Answer:
\(\frac{2}{10}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 6 509
0.2

Explanation:
10 is a common factor of the numerator and the denominator.
\(\frac{20}{100}\) = \(\frac{20 ÷ 10}{100 ÷ 10}\) = \(\frac{2}{10}\)
0.2

Practice: Copy and Solve Write the number as hundredths in fraction form and decimal form.

Question 8.
\(\frac{8}{10}\)
Type below:
_________

Answer:
\(\frac{80}{100}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 5 509
0.8

Explanation:
Write \(\frac{8}{10}\) as an equivalent fraction.
\(\frac{8}{10}\) =\(\frac{8 × 10}{10× 10}\) = \(\frac{80}{100}\)
8 tenths is the same as 8 tenths 0 hundredths. So the decimal form = 0.8

Question 9.
\(\frac{2}{10}\)
Type below:
_________

Answer:
\(\frac{20}{100}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 6 509
0.2

Explanation:
Write \(\frac{2}{10}\) as an equivalent fraction.
\(\frac{2}{10}\) =\(\frac{2 × 10}{10× 10}\) = \(\frac{20}{100}\)
2 tenths is the same as 2 tenths 0 hundredths. So the decimal form = 0.2

Question 10.
0.1
Type below:
_________

Answer:
\(\frac{50}{100}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 7 509
0.50

Explanation:
Write 0.1 = \(\frac{1}{10}\) as an equivalent fraction.
\(\frac{1}{10}\) =\(\frac{1 × 10}{10× 10}\) = \(\frac{10}{100}\)
1 tenth is the same as 1 tenth 0 hundredths and also 0.1

Practice: Copy and Solve Write the number as tenths in fraction form and decimal form.

Question 11.
\(\frac{60}{100}\)
Type below:
_________

Answer:
\(\frac{6}{10}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 8 509
0.6

Explanation:
10 is a common factor of the numerator and the denominator.
\(\frac{60}{100}\) = \(\frac{60 ÷ 10}{100 ÷ 10}\) = \(\frac{6}{10}\)
0.6

Question 12.
\(\frac{90}{100}\)
Type below:
_________

Answer:
\(\frac{9}{10}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 9 509
0.9

Explanation:
10 is a common factor of the numerator and the denominator.
\(\frac{90}{100}\) = \(\frac{90 ÷ 10}{100 ÷ 10}\) = \(\frac{9}{10}\)
= 0.9

Question 13.
0.70
Type below:
_________

Answer:
\(\frac{7}{10}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 2 509
0.7

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 2 509
There are no hundredths.
0.70 is equivalent to 7 tenths.
Write 0.70 as 7 tenths = 0.7 = \(\frac{7}{10}\)

Write the number as an equivalent mixed number with hundredths.

Question 14.
1 \(\frac{4}{10}\) = _____

Answer:
1 \(\frac{40}{100}\)

Explanation:
1 \(\frac{4 x 10}{10 x 10}\) = 1 \(\frac{40}{100}\)

Question 15.
3 \(\frac{5}{10}\) = _____

Answer:
3 \(\frac{50}{100}\)

Explanation:
3 \(\frac{5}{10}\) = 3 \(\frac{5 x 10}{10 x 10}\) = 3 \(\frac{50}{100}\)

Question 16.
2 \(\frac{9}{10}\) = _____

Answer:
2 \(\frac{90}{100}\)

Explanation:
2 \(\frac{9}{10}\) = 2 \(\frac{9 x 10}{10 x 10}\) = 2 \(\frac{90}{100}\)

Page No. 510

Question 17.
Carter says that 0.08 is equivalent to \(\frac{8}{10}\). Describe and correct Carter’s error.
Type below:
_________

Answer:
grade 4 chapter 9 Relate Fractions and Decimals Image 1 510
8 hundredths = \(\frac{8}{100}\)
The decimal point is before the 2 numbers. So, the denominator should be 100.

Question 18.
For numbers 18a–18e, choose True or False for the statement.
a. 0.6 is equivalent to \(\frac{6}{100}\).
i. True
ii. False

Answer:
ii. False

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 8 509
0.60 = 6 tenths.
6 tenths = \(\frac{6}{10}\)

Question 18.
b. \(\frac{3}{10}\) is equivalent to 0.30.
i. True
ii. False

Answer:
i. True

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 4 509
0.30 = 3 tenths.
3 tenths = \(\frac{3}{10}\)

Question 18.
c. \(\frac{40}{100}\) is equivalent to \(\frac{4}{10}\).
i. True
ii. False

Answer:
i. True

Explanation:
10 is a common factor of the numerator and the denominator.
\(\frac{40}{100}\) = \(\frac{40 ÷ 10}{100 ÷ 10}\) = \(\frac{4}{10}\)

Question 18.
d. 0.40 is equivalent to \(\frac{4}{100}\).
i. True
ii. False

Answer:
ii. False

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 1 509
4 tenths and 0 hundreds = \(\frac{4}{10}\)

Question 18.
e. 0.5 is equivalent to 0.50.
i. True
ii. False

Answer:
i. True

Explanation:
If you add any zeros after the 5 it will be equal to 0.5. So, 0.5 is equivalent to 0.50

Inland Water
How many lakes and rivers does your state have? The U.S. Geological Survey defines inland water as water that is surrounded by land. The Atlantic Ocean, the Pacific Ocean, and the Great Lakes are not considered inland water.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 28

Question 19.
Just over \(\frac{2}{100}\) of the entire United States is inland water. Write \(\frac{2}{100}\) as a decimal.
_____

Answer:
0.02

Explanation:
Write down 2 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, \(\frac{2}{100}\) = 0.02 is the answer

Question 20.
Can you write 0.02 as tenths? Explain.
_____ tenth

Answer:
0.2 tenth

Explanation:
0.02 = \(\frac{2}{100}\) = \(\frac{2 ÷ 10}{100 ÷ 10}\) = \(\frac{0.2}{10}\)

Question 21.
About 0.17 of the area of Rhode Island is inland water. Write 0.17 as a fraction.
\(\frac{□}{□}\)

Answer:
\(\frac{17}{100}\)

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 2 510
1 tenth and 7 hundred.
So, write 0.17 as \(\frac{17}{100}\)

Question 22.
Louisiana’s lakes and rivers cover about \(\frac{1}{10}\) of the state. Write \(\frac{1}{10}\) as hundredths in words, fraction form, and decimal form.
Type below:
_________

Answer:
Ten hundredths = \(\frac{10}{100}\) = 0.10

Explanation:
1 tenth is the same as the 1 tenth and 0 hundred
grade 4 chapter 9 Relate Fractions and Decimals Image 7 509
0.1 = 0.10 = \(\frac{10}{100}\)

Common Core – New – Page No. 511

Equivalent Fractions and Decimals

Write the number as hundredths in fraction form and decimal form.

Question 1.
\(\frac{5}{10}\) \(\frac{5}{10}\) = \(\frac{5 \times 10}{10 \times 10}\) = \(\frac{50}{100}\)
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 29
Think: 5 tenths is the same as 5 tenths and 0 hundredths. Write 0.50.

Question 2.
\(\frac{9}{10}\)
Type below:
_________

Answer:
\(\frac{90}{100}\); 0.90

Explanation:
\(\frac{9}{10}\) = \(\frac{9 \times 10}{10 \times 10}\) = \(\frac{90}{100}\)
9 tenths is the same as 9 tenths and 0 hundredths. Write 0.90

Question 3.
0.2
Type below:
_________

Answer:
\(\frac{20}{100}\)
0.20

Explanation:
2 tenths is the same as 2 tenths and 0 hundredths. Write 0.20.
grade 4 chapter 9 Relate Fractions and Decimals Image 6 509
\(\frac{2}{10}\) = \(\frac{2 x 10}{10 x 10}\) = \(\frac{20}{100}\)

Question 4.
0.8
Type below:
_________

Answer:
\(\frac{80}{100}\) = 0.80

Explanation:
8 tenths is the same as 8 tenths and 0 hundredths. Write 0.80.
grade 4 chapter 9 Relate Fractions and Decimals Image 5 509
\(\frac{8}{10}\) = \(\frac{8 x 10}{10 x 10}\) = \(\frac{80}{100}\)

Write the number as tenths in fraction form and decimal form.

Question 5.
\(\frac{40}{100}\)
Type below:
_________

Answer:
\(\frac{4}{10}\) = 0.4

Explanation:
10 is a common factor of the numerator and the denominator.
\(\frac{40}{100}\) = \(\frac{40 ÷ 10}{100 ÷ 10}\) = \(\frac{4}{10}\)
= 0.4

Relate Fractions and Decimals 4th Grade Question 6.
\(\frac{10}{100}\)
Type below:
_________

Answer:
\(\frac{1}{10}\) = 0.1

Explanation:
10 is a common factor of the numerator and the denominator.
\(\frac{10}{100}\) = \(\frac{10 ÷ 10}{100 ÷ 10}\) = \(\frac{1}{10}\)
= 0.1

Question 7.
0.60
Type below:
_________

Answer:
\(\frac{6}{10}\) = 0.6

Explanation:
0.60 is 60 hundredths.
\(\frac{60}{100}\).
10 is a common factor of the numerator and the denominator.
\(\frac{60}{100}\) = \(\frac{60 ÷ 10}{100 ÷ 10}\) = \(\frac{6}{10}\)
= 0.6

Problem Solving

Question 8.
Billy walks \(\frac{6}{10}\) mile to school each day. Write \(\frac{6}{10}\) as hundredths in fraction form and in decimal form.
Type below:
________

Answer:
\(\frac{60}{100}\)
0.60

Explanation:
Billy walks \(\frac{6}{10}\) mile to school each day.
\(\frac{6}{10}\) = \(\frac{6 x 10}{10 x 10}\) = \(\frac{60}{100}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 8 509
0.60

Question 9.
Four states have names that begin with the letter A. This represents 0.08 of all the states. Write 0.08 as a fraction.
\(\frac{□}{□}\)

Answer:
\(\frac{8}{100}\)

Explanation:
0.08 is 8 hundredths. So, the fraction is \(\frac{8}{100}\)

Common Core – New – Page No. 512

Lesson Check

Question 1.
The fourth-grade students at Harvest School make up 0.3 of all students at the school. Which fraction is equivalent to 0.3?
Options:
a. \(\frac{3}{10}\)
b. \(\frac{30}{10}\)
c. \(\frac{3}{100}\)
d. \(\frac{33}{100}\)

Answer:
a. \(\frac{3}{10}\)

Explanation:
0.3 is same as the 3 tenths. So, the answer is \(\frac{3}{10}\)

Question 2.
Kyle and his brother have a marble set. Of the marbles, 12 are blue. This represents \(\frac{50}{100}\) of all the marbles. Which decimal is equivalent to \(\frac{50}{100}\)?
Options:
a. 50
b. 5.0
c. 0.50
d. 5,000

Answer:
c. 0.50

Explanation:

Write down 50 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, 0.50 is the answer

Spiral Review

Question 3.
Jesse won his race by 3 \(\frac{45}{100}\) seconds. What is this number written as a decimal?
Options:
a. 0.345
b. 3.45
c. 34.5
d. 345

Answer:
b. 3.45

Explanation:
3 \(\frac{45}{100}\) = \(\frac{345}{100}\). Write down 345 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, 3.45 is the answer

Question 4.
Marge cut 16 pieces of tape for mounting pictures on poster board. Each piece of tape was \(\frac{3}{8}\) inch long. How much tape did Marge use?
Options:
a. 2 inches
b. 4 inches
c. 5 inches
d. 6 inches

Answer:
d. 6 inches

Explanation:
\(\frac{3}{8}\) x 16 = 6 inches

Question 5.
Of Katie’s pattern blocks, \(\frac{9}{12}\) are triangles. What is \(\frac{9}{12}\) in simplest form?
Options:
a. \(\frac{1}{4}\)
b. \(\frac{2}{3}\)
c. \(\frac{3}{4}\)
d. \(\frac{9}{12}\)

Answer:
c. \(\frac{3}{4}\)

Explanation:
\(\frac{9}{12}\) is divided by 3. So, \(\frac{3}{4}\) is the answer.

Question 6.
A number pattern has 75 as its first term. The rule for the pattern is to subtract 6. What is the sixth term?
Options:
a. 39
b. 45
c. 51
d. 69

Answer:
b. 45

Explanation:
75 is the first term.
75 – 6 =69
69 – 6 = 63
63 – 6 = 57
57 – 6 = 51
51 – 6 = 45.
The sixth term is 45.

Page No. 515

Question 1.
Write the amount of money as a decimal in terms of dollars.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 30
5 pennies = \(\frac{5}{100}\) of a dollar = _____ of a dollar.
_____ of a dollar

Answer:
5 pennies = \(\frac{5}{100}\) of a dollar = 0.05 of a dollar.
0.05 of a dollar

Explanation:
Write down 5 with the decimal point 2 spaces from the right (because 100 has 2 zeros). 0.05

Write the total money amount. Then write the amount as a fraction or a mixed number and as a decimal in terms of dollars.

Question 2.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 31
Type below:
_________

Answer:
\(\frac{109}{100}\) = 1.09

Explanation:
1 dollar = 1/10 dimes
1 dollar = 1/100 pennies
1 dollar = 25/100 quarters
(3 x 1/10) + (4 x 1/100) + (3 x 25/100)
3/10 + 4/100 + 75/100
30/100 + 4/100 + 75/100 = 109/100 = 1.09

Question 3.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 32
Type below:
_________

Answer:
\(\frac{60}{100}\) = 0.60

Explanation:
Given that 1 quarter, 2 dimes, and 3 cents.
10 dimes = 1 dollars
100 pennies = 1 dollar
4 quarters = 1 dollar
2 cents = 1 dollar
(25/100) + (2 x 1/10) + (3 x 5/100) = 25/100 + 20/100 + 15/100 = 60/100 = 0.60

Write as a money amount and as a decimal in terms of dollars.

Question 4.
\(\frac{92}{100}\)
amount: _____ decimal: _____of a dollar

Answer:
amount: $0.92 decimal: 0.92 of a dollar

Explanation:
\(\frac{92}{100}\) = 0.92

Question 5.
\(\frac{7}{100}\)
money amount: $ _____ decimal: _____ of a dollar

Answer:
money amount: $0.07 decimal: 0.07 of a dollar

Explanation:
\(\frac{7}{100}\) = 0.07

Question 6.
\(\frac{16}{100}\)
money amount: $ _____ decimal: _____ of a dollar

Answer:
money amount: $0.16 decimal: 0.16 of a dollar

Explanation:
\(\frac{16}{100}\) = 0.16

Question 7.
\(\frac{53}{100}\)
money amount: $ _____ decimal: _____ of a dollar

Answer:
money amount: $0.53 decimal: 0.53 of a dollar

Explanation:
\(\frac{53}{100}\) = 0.53

Write the total money amount. Then write the amount as a fraction or a mixed number and as a decimal in terms of dollars.

Question 8.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 33
Type below:
_________

Answer:
\(\frac{46}{100}\) = 0.46

Explanation:
Given that 3 dimes, 3 nickels, 1 pennies
(3 x 10/100) + (3 x 5/100) + 1/100 = 30/100 + 15/100 + 1/100 = 46/100 = 0.46

Question 9.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 34
Type below:
_________

Answer:
\(\frac{136}{100}\) = 1.36

Explanation:
Given that 1 dollar, 1 quarter, 1 pennies, 2 nickels
1 + 25/100 + 1/100 + (2 x 5/100)
1 + 25/100 + 1/100 + 10/100
1 + 36/100
136/100 = 1.36

Write as a money amount and as a decimal in terms of dollars.

Question 10.
\(\frac{27}{100}\)
money amount: $ _____ decimal: _____ of a dollar

Answer:
amount: $0.27 decimal: 0.27 of a dollar

Explanation:
\(\frac{27}{100}\) = 0.27

Question 11.
\(\frac{4}{100}\)
money amount: $ _____ decimal: _____ of a dollar

Answer:
amount: $0.04 decimal: 0.04 of a dollar

Explanation:
\(\frac{4}{100}\) = 0.04

Go Math Grade 4 Chapter 9 Test Answer Key Question 12.
\(\frac{75}{100}\)
money amount: $ _____ decimal: _____ of a dollar

Answer:
amount: $0.75 decimal: 0.75 of a dollar

Explanation:
\(\frac{75}{100}\) = 0.75

Question 13.
\(\frac{100}{100}\)
money amount: $ _____ decimal:_____ of a dollar

Answer:
money amount: $1 decimal: 1 of a dollar

Explanation:
\(\frac{100}{100}\) = 1

Write the total money amount. Then write the amount as a fraction and as a decimal in terms of dollars.

Question 14.
1 quarter 6 dimes 8 pennies
Type below:
_________

Answer:
money amount: $0.39; fraction: \(\frac{39}{100}\) decimal: 0.39 of a dollar

Explanation:
1 dollar = 100 cents
1 quarter = 25 cents
1 dime = 10 cents
1 penny = 1 cent
1 quarter 6 dimes 8 pennies = (25/100) + (6 x 10/100) + (8 x 1/100)
25/100 + 60/100 + 8/100 = 39/100 = 0.39

Question 15.
3 dimes 5 nickels 20 pennies
Type below:
_________

Answer:
money amount: $0.75; fraction: \(\frac{75}{100}\) decimal: 0.75 of a dollar

Explanation:
1 dollar = 100 cents
1 quarter = 25 cents
1 dime = 10 cents
1 penny = 1 cent
3 dimes 5 nickels 20 pennies = (3 x 10/100) + (5 x 5/100) + (20 x 1/100)
30/100 + 25/100 + 20/100 = 75/100 = 0.75

Page No. 516

Make Connections Algebra Complete to tell the value of each digit.

Question 16.
a.
$1.05 = _____ dollar + _____ pennies;

Answer:
$1.05 = 1 dollar + 5 pennies

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 1 516
$1.05 = 1 dollar and 05 pennies
There are 100 pennies in 1 dollar.
So, $1.05 = 105 pennies.

Question 16.
b.
1.05 = _____ one + _____ hundredths

Answer:
1.05 = 1 one and 05 hundredths

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 2 516
1.05 = 1 one and 05 hundredths
There are 100 hundredths in 1 one.
So, 1.05 = 105 hundredths.

Question 17.
a.
$5.18 = _____ dollars + _____ dime + _____ pennies;

Answer:
$5.18 = 5 dollars + 1 dime + 8 pennies;

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 3 516
$5.18 = 5 dollar and 1 dime and 8 pennies
There are 500 pennies in 5 dollars.
1 dime = 10 pennies
So, $5.18 = 518 pennies.

Question 17.
b.
5.18 = _____ ones + _____ tenth + _____ pennies

Answer:
5.18 = 5 ones + 1 tenths + 8 pennies

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 4 516
5.18 = 5 ones and 1 tenths and 8 pennies
There are 100 hundredths in 1 one. So, 500 hundredths in 5 ones.
So, 5.18 = 518 hundredths.

Use the table for 18–19.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 35

Question 18.
The table shows the coins three students have. Write Nick’s total amount as a fraction in terms of dollars.
\(\frac{□}{□}\) of a dollar

Answer:
\(\frac{92}{100}\) of a dollar

Explanation:
Nick’s total amount = 2 quarters + 4 dimes + 0 Nickels + 2 pennies
= (2 x 25/100) + (4 x 10/100) + (2 x 1/100) = 50/100 + 40/100 + 2/100 = 92/100

Question 19.
Kim spent \(\frac{40}{100}\) of a dollar on a snack. Write as a money amount the amount she has left.
$ _____

Answer:
$0.28

Explanation:
Kim’s total amount = 1 quarter + 3 dimes + 2 nickels + 3 pennies
= 25/100 + (3 x 10/100) + (2 x 5/100) + (3 x 1/100) = 25/100 + 30/100 + 10/100 + 3/100 = 68/100.
Kim spent \(\frac{40}{100}\) of a dollar on a snack. So, 68/100 – 40/100 = 28/100 = 0.28

Question 20.
Travis has \(\frac{1}{2}\) of a dollar. He has at least two different types of coins in his pocket. Draw two possible sets of coins that Travis could have.
Type below:
_________

Answer:
grade 4 chapter 9 Relate Fractions and Decimals Image 6 516

Explanation:
1 Quarter + 2 dimes + 5 Pennies = 25/100 + 10/100 + 10/100 + 5/100 = 50/100 = 1/2 of a dollar
1 Quarter + 2 dimes + 1 Nickel = 25/100 + 10/100 + 10/100 + 5/100 = 50/100 = 1/2 of a dollar

Question 21.
Complete the table.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 36
Type below:
_________

Answer:
grade 4 chapter 9 Relate Fractions and Decimals Image 7 516

Common Core – New – Page No. 517

Relate Fractions, Decimals, and Money

Write the total money amount. Then write the amount as a fraction or a mixed number and as a decimal in terms of dollars.

Question 1.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 37

Answer:
$0.18 = \(\frac{18}{100}\) = 0.18

Explanation:
Given that 3 Pennies + 3 Nickels = 3/100 + 15/100 = 18/100

Question 2.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 38
Type below:
_________

Answer:
$0.56 = \(\frac{56}{100}\) = 0.56

Explanation:
Given that 1 Quarter + 3 dime + 1 Pennies = 25/100 + 30/100 + 1/100 = 56/100

Write as a money amount and as a decimal in terms of dollars.

Question 3.
\(\frac{25}{100}\)
Dollars: _____ Decimal: _____

Answer:
Dollars: 1 quarter = $0.25; Decimal: 0.25

Explanation:
25 our of 100 dollars = 1 quarter.
So, 25/100 = 0.25

Question 4.
\(\frac{79}{100}\)
Dollars: _____ Decimal: _____

Answer:
amount: $0.79 decimal: 0.79 of a dollar

Explanation:
\(\frac{79}{100}\) = 0.79

Question 5.
\(\frac{31}{100}\)
Dollars: _____ Decimal: _____

Answer:
amount: $0.31 decimal: 0.31 of a dollar

Explanation:
\(\frac{31}{100}\) = 0.31

Question 6.
\(\frac{8}{100}\)
Dollars: _____ Decimal: _____

Answer:
amount: $0.08 decimal: 0.08 of a dollar

Explanation:
\(\frac{8}{100}\) = 0.08

Question 7.
\(\frac{42}{100}\)
Dollars: _____ Decimal: _____

Answer:
amount: $0.42 decimal: 0.42 of a dollar

Explanation:
\(\frac{42}{100}\) = 0.42

Write the money amount as a fraction in terms of dollars.

Question 8.
$0.87
\(\frac{□}{□}\)

Answer:
\(\frac{87}{100}\) of a dollar

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 1 517
$0.87 = 87 pennies
There are 100 pennies in 1 dollar.
So, $0.87 = \(\frac{87}{100}\) of a dollar.

Question 9.
$0.03
\(\frac{□}{□}\)

Answer:
\(\frac{3}{100}\)

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 2 517
$0.03 = 3 pennies
There are 100 pennies in 1 dollar.
So, $0.03 = \(\frac{3}{100}\).

Question 10.
$0.66
\(\frac{□}{□}\)

Answer:
\(\frac{66}{100}\)

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 3 517
$0.66 = 66 pennies
There are 100 pennies in 1 dollar.
So, $0.66 = \(\frac{66}{100}\).

Question 11.
$0.95
\(\frac{□}{□}\)

Answer:
\(\frac{95}{100}\)

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 4 517
$0.95 = 95 pennies
There are 100 pennies in 1 dollar.
So, $0.95 = \(\frac{95}{100}\).

Question 12.
$1.00
\(\frac{□}{□}\)

Answer:
\(\frac{100}{100}\)

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 5 517
$1.00 = 1 dollar
There are 100 pennies in 1 dollar.
So, $1.00 = \(\frac{100}{100}\).

Write the total money amount. Then write the amount as a fraction and as a decimal in terms of dollars.

Question 13.
2 quarters 2 dimes
Type below:
_________

Answer:
money amount: $0.70; fraction: \(\frac{70}{100}\); decimal: 0.70

Explanation:
Given that 2 quarters 2 dimes = (2 x 25/100) + (2 x 10/100) = 50/100 + 20/100 = 70/100

Question 14.
3 dimes 4 pennies
Type below:
_________

Answer:
money amount: $0.34; fraction: \(\frac{34}{100}\); decimal: 0.34

Explanation:
Given that 3 dimes 4 pennies = (3 x 10/100) + (4 x 1/100) = 30/100 + 4/100 = 34/100

4th Grade Go Math Pdf Lesson 9.5 Answer Key Question 15.
8 nickels 12 pennies
Type below:
_________

Answer:
money amount: $0.57; fraction: \(\frac{57}{100}\); decimal: 0.57

Explanation:
Given that 8 nickels 12 pennies = (8 x 5/100) + (12 x 1/100) = 45/100 + 12/100 = 57/100

Problem Solving

Question 16.
Kate has 1 dime, 4 nickels, and 8 pennies. Write Kate’s total amount as a fraction in terms of a dollar.
\(\frac{□}{□}\)

Answer:
fraction: \(\frac{38}{100}\)

Explanation:
Kate has 1 dime, 4 nickels, and 8 pennies.
10/100 + (4 x 5/100) + (8/100) = 10/100 + 20/100 + 8/100 = 38/100

Question 17.
Nolan says he has \(\frac{75}{100}\) of a dollar. If he only has 3 coins, what are the coins?
_________

Answer:
3 quarters

Explanation:
3 quarters = \(\frac{25}{100}\) + \(\frac{25}{100}\) + \(\frac{25}{100}\) = \(\frac{75}{100}\)

Common Core – New – Page No. 518

Lesson Check

Question 1.
Which of the following names the total money amount shown as a fraction in terms of a dollar?
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 39
Options:
a. \(\frac{43}{1}\)
b. \(\frac{43}{10}\)
c. \(\frac{43}{57}\)
d. \(\frac{43}{100}\)

Answer:
d. \(\frac{43}{100}\)

Explanation:
Given that 1 quarter + 1 nickel + 1 dime + 3 pennies = 25/100 + 5/100 + 10/100 + 3/100 = 43/100

Question 2.
Crystal has \(\frac{81}{100}\) of a dollar. Which of the following could be the coins Crystal has?
Options:
a. 3 quarters, 1 dime, 1 penny
b. 2 quarters, 6 nickels, 1 penny
c. 2 quarters, 21 pennies
d. 1 quarter, 4 dimes, 1 nickel, 1 penny

Answer:
b. 2 quarters, 6 nickels, 1 penny

Explanation:
2 quarters, 6 nickels, 1 penny = (2 x 25/100) + (6 x 5/100) + 1/100 = 50/100 + 30/100 + 1/100 = 81/100

Spiral Review

Question 3.
Joel gives \(\frac{1}{3}\) of his baseball cards to his sister. Which fraction is equivalent to \(\frac{1}{3}\)?
Options:
a. \(\frac{3}{5}\)
b. \(\frac{2}{6}\)
c. \(\frac{8}{9}\)
d. \(\frac{4}{10}\)

Answer:
b. \(\frac{2}{6}\)

Explanation:
\(\frac{2}{6}\) is divided by 2. The remaining answer after the dividion is \(\frac{1}{3}\).

Question 4.
Penelope bakes pretzels. She salts \(\frac{3}{8}\) of the pretzels. Which fraction is equivalent to \(\frac{3}{8}\)?
Options:
a. \(\frac{9}{24}\)
b. \(\frac{15}{20}\)
c. \(\frac{3}{16}\)
d. \(\frac{1}{5}\)

Answer:
a. \(\frac{9}{24}\)

Explanation:
a. \(\frac{9}{24}\) is divided by 3. The remaining fraction after the division is \(\frac{3}{8}\).

Question 5.
Which decimal is shown by the model?
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 40
Options:
a. 10.0
b. 1.0
c. 0.1
d. 0.01

Answer:
d. 0.01

Explanation:
1 box is shaded out of 100. So, the fraction is 1/100 = 0.01.

Question 6.
Mr. Guzman has 100 cows on his dairy farm. Of the cows, 57 are Holstein. What decimal represents the portion of cows that are Holstein?
Options:
a. 0.43
b. 0.57
c. 5.7
d. 57.0

Answer:
b. 0.57

Explanation:
Mr. Guzman has 100 cows on his dairy farm. Of the cows, 57 are Holstein. So, 57/100 Holstein cows are available.
57/100 = 0.57

Page No. 521

Question 1.
Juan has $3.43. He is buying a paint brush that costs $1.21 to paint a model race car. How much will Juan have after he pays for the paint brush?
First, use bills and coins to model $3.43.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 41
Next, you need to subtract. Remove bills and coins that have a value of $1.21. Mark Xs to show what you remove.
Last, count the value of the bills and coins that are left. How much will Juan have left?
$ _____

Answer:
Juan has $3.43. He is buying a paint brush that costs $1.21 to paint a model race car. Subtract $3.43 – $1.21
grade 4 chapter 9 Relate Fractions and Decimals Image 1 521
2 dollars, 2 dimes, and 2 pennies left.
2 + (2 x 10/100) + (2/100) = 2 + 20/100 + 2/100 = 2 + 22/100 = 2.22.
Juan has left $2.22

Question 2.
What if Juan has $3.43, and he wants to buy a paint brush that costs $2.28? How much money will Juan have left then? Explain.
$ _____

Answer:
$1.15

Explanation:
Juan has $3.43. He wants to buy a paint brush that costs $2.28.
$3.43 – $2.28 = $1.15

Question 3.
Sophia has $2.25. She wants to give an equal amount to each of her 3 young cousins. How much will each cousin receive?
$ _____ each cousin receive

Answer:
$0.75 each cousin receive

Explanation:
Sophia has $2.25. She wants to give an equal amount to each of her 3 young cousins.
Divide $2.25 with 3 = $2.25/3 = $0.75

Page No. 522

Question 4.
Marcus saves $13 each week. In how many weeks will he have saved at least $100?
_____ weeks

Answer:
8 weeks

Explanation:
Marcus saves $13 each week. He saves $100 in $100/$13 weeks = 7.96 weeks that is nearly equal to 8 weeks.

Question 5.
Analyze Relationships Hoshi has $50. Emily has $23 more than Hoshi. Karl has $16 less than Emily. How much money do they have all together?
$ _____

Answer:
$180

Explanation:
Hoshi has $50.
Emily has $23 more than Hoshi = $50 + $23 = $73.
Karl has $16 less than Emily = $73 – $16 = $57.
All together = $50 +$73 + $57 = $180.

Question 6.
Four girls have $5.00 to share equally. How much money will each girl get? Explain.
$ _____ each girl

Answer:
$1.25 for each girl

Explanation:
Four girls have $5.00 to share equally. So, each girl get $5.00/4 = $1.25

Question 7.
What if four girls want to share $5.52 equally? How much money will each girl get? Explain.
$ _____

Answer:
$1.38

Explanation:
Four girls have $5.52 to share equally. So, each girl get $5.52/4 = $1.38. If the amount shares equally, each girl get 1 dollar, 1 dime, 8 pennies.

Question 8.
Aimee and three of her friends have three quarters and one nickel. If Aimee and her friends share the money equally, how much will each person get? Explain how you found your answer.
$ _____

Answer:
$0.2

Explanation:
Aimee and three of her friends have three quarters and one nickel. If Aimee and her friends share the money equally. Four members shared (3 x 25/100) + 5/100 = 75/100 + 5/100 = 80/100 = 0.8.
Four members shared $0.8 equally, $0.8/4 = $0.2.

Common Core – New – Page No. 523

Problem Solving Money

Use the act it out strategy to solve.

Question 1.
Carl wants to buy a bicycle bell that costs $4.50. Carl has saved $2.75 so far. How much more money does he need to buy the bell?
Use 4 $1 bills and 2 quarters to model $4.50. Remove bills and coins that have a value of $2.75. First, remove 2 $1 bills and 2 quarters.
Next, exchange one $1 bill for 4 quarters and remove 1 quarter.
Count the amount that is left. So, Carl needs to save $1.75 more.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 42

Answer:
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 42

Question 2.
Together, Xavier, Yolanda, and Zachary have $4.44. If each person has the same amount, how much money does each person have?
$ __________

Answer:
$1.11

Explanation:
Together, Xavier, Yolanda, and Zachary have $4.44. If each person has the same amount, $4.44/4 = $1.11

Question 3.
Marcus, Nan, and Olive each have $1.65 in their pockets. They decide to combine the money. How much money do they have altogether?
$ __________

Answer:
$4.95

Explanation:
Marcus, Nan, and Olive each have $1.65 in their pockets. They decide to combine the money. So, $1.65 + $1.65 + $1.65 = $4.95

Question 4.
Jessie saves $6 each week. In how many weeks will she have saved at least $50?
__________ weeks

Answer:
9 weeks

Explanation:
Jessie saves $6 each week. To save $50, $50/$6 = 9 weeks (approximately)

Question 5.
Becca has $12 more than Cece. Dave has $3 less than Cece. Cece has $10. How much money do they have altogether?
$ __________

Answer:
$39

Explanation:
Cece has $10.
Becca has $12 more than Cece = $10 + $12 = $22.
Dave has $3 less than Cece = $10 – $3 = $7.
All together = $10 + $22 + $7 = $39.

Common Core – New – Page No. 524

Lesson Check

Question 1.
Four friends earned $5.20 for washing a car. They shared the money equally. How much did each friend get?
Options:
a. $1.05
b. $1.30
c. $1.60
d. $20.80

Answer:
b. $1.30

Explanation:
Four friends earned $5.20 for washing a car. They shared the money equally.
$5.20/4 = $1.30

Question 2.
Which represents the value of one $1 bill and 5 quarters?
Options:
a. $1.05
b. $1.25
c. $1.50
d. $2.25

Answer:
d. $2.25

Explanation:
one $1 bill and 5 quarters. 5 quarters = 5 x 0.25 = 1.25.
$1 + $1.25 = $2.25

Spiral Review

Question 3.
Bethany has 9 pennies. What fraction of a dollar is this?
Options:
a. \(\frac{9}{100}\)
b. \(\frac{9}{10}\)
c. \(\frac{90}{100}\)
d. \(\frac{99}{100}\)

Answer:
a. \(\frac{9}{100}\)

Explanation:
1 dollar = 100 pennies.
So, 9 pennies = 9/100 of a dollar

Question 4.
Michael made \(\frac{9}{12}\) of his free throws at practice. What is \(\frac{9}{12}\) in simplest form?
Options:
a. \(\frac{1}{4}\)
b. \(\frac{3}{9}\)
c. \(\frac{1}{2}\)
d. \(\frac{3}{4}\)

Answer:
d. \(\frac{3}{4}\)

Explanation:
\(\frac{9}{12}\) is divided by 3 that is equal to d. \(\frac{3}{4}\).

Question 5.
I am a prime number between 30 and 40. Which number could I be?
Options:
a. 31
b. 33
c. 36
d. 39

Answer:
a. 31

Explanation:
31 has fractions 1 and 31.

Question 6.
Georgette is using the benchmark \(\frac{1}{2}\) to compare fractions. Which statement is correct?
Options:
a. \(\frac{3}{8}>\frac{1}{2}\)
b. \(\frac{2}{5}<\frac{1}{2}\)
c. \(\frac{7}{12}<\frac{1}{2}\)
d. \(\frac{9}{10}=\frac{1}{2}\)

Answer:
b. \(\frac{2}{5}<\frac{1}{2}\)

Explanation:
From the given details, \(\frac{2}{5}<\frac{1}{2}\) is the correct answer.

Page No. 525

Choose the best term from the box to complete the sentence.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 43

Question 1.
A symbol used to separate the ones and the tenths place is called a __________.
__________

Answer:
decimal point

Question 2.
The number 0.4 is written as a ____________.
__________

Answer:
4 tenths or 40 hundredths

Question 3.
A ______________ is one of one hundred equal parts of a whole.
__________

Answer:
hundredth

Write the fraction or mixed number and the decimal shown by the model.

Question 4.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 44
Type below:
________

Answer:
\(\frac{4}{10}\) = 0.4

Explanation:
From the given model, 4 boxes are shaded out of 10 boxes. So, the fraction is \(\frac{4}{10}\) = 0.4

Question 5.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 45
Type below:
________

Answer:
1\(\frac{3}{100}\) = 1.03

Explanation:
The model is divided into 100 equal parts. Each part represents the one-hundredth.
1\(\frac{3}{100}\) is 1 whole and 3 hundredths.

Write the number as hundredths in fraction form and decimal form.

Question 6.
\(\frac{8}{10}\)
Type below:
________

Answer:
\(\frac{80}{100}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 5 509
0.80

Explanation:
Write \(\frac{8}{10}\) as an equivalent fraction.
\(\frac{8}{10}\) =\(\frac{8 × 10}{10× 10}\) = \(\frac{80}{100}\)
8 tenths is the same as 8 tenths 0 hundredths. So the decimal form = 0.80

Question 7.
0.5
Type below:
________

Answer:
\(\frac{50}{100}\)
grade 4 chapter 9 Relate Fractions and Decimals Image 3 509
0.50

Explanation:
Write 0.5 = \(\frac{5}{10}\) as an equivalent fraction.
\(\frac{5}{10}\) =\(\frac{5 × 10}{10× 10}\) = \(\frac{50}{100}\)
5 tenths is the same as 5 tenths 0 hundredths and also 0.50

Question 8.
Type below:
________

Answer:
b. \(\frac{2}{5}<\frac{1}{2}\)

Explanation:

Write the fraction or mixed number as a money amount, and as a decimal in terms of dollars.

Question 9.
\(\frac{95}{100}\)
amount: $ _____ decimal: _____ of a dollar

Answer:
amount: $0.95; decimal: 0.95

Explanation:
Write down 95 with the decimal point 2 spaces from the right (because 100 has 2 zeros)

Question 10.
1 \(\frac{48}{100}\)
amount: $ _____ decimal: _____ of a dollar

Answer:
amount: $1.48; decimal: 1.48

Explanation:
1\(\frac{48}{100}\) = \(\frac{148}{100}\)
Write down 148 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, 1.48 is the answer

Question 11.
\(\frac{4}{100}\)
amount: $ _____ decimal: _____ of a dollar

Answer:
amount: $0.04; decimal: 0.04

Explanation:
Write down 4 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, the answer is 0.04

Page No. 526

Question 12.
Ken’s turtle competed in a 0.50-meter race. His turtle had traveled \(\frac{4}{100}\)
meter when the winning turtle crossed the finish line. What is \(\frac{4}{100}\) written as a decimal?
_____

Answer:
decimal: 0.04

Explanation:
Write down 4 with the decimal point 2 spaces from the right (because 100 has 2 zeros). So, the answer is 0.04

Question 13.
Alex lives eight tenths of a mile from Sarah. What is eight tenths written as a decimal?
_____

Answer:
decimal: 0.8

Explanation:
Write down 8 with the decimal point 1 space from the right (because 100 has 1 zero). The decimal value of eight-tenths is 0.8

Go Math 4th Grade Lesson 9.6 Answer Key Question 14.
What fraction and decimal, in hundredths, is equivalent to \(\frac{7}{10}\)?
Type below:
________

Answer:
\(\frac{7 x 10}{10 x 10}\) = 0.70

Explanation:
\(\frac{7}{10}\) = \(\frac{7 x 10}{10 x 10}\) = 0.70

Question 15.
Elaine found the following in her pocket. How much money was in her pocket?
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 46
$ _____

Answer:
$\(\frac{140}{100}\)

Explanation:
Given that 1 dollar, 1 quarter, 1 dime, 1 Nickel.
1 + 25/100 + 10/100 + 5/100 = 1 + 40/100 = 140/100

Question 16.
Three girls share $0.60. Each girl gets the same amount. How much money does each girl get?
$ _____

Answer:
$0.20

Explanation:
Three girls share $0.60. Each girl gets the same amount. So, $0.60/3 = $0.20

Question 17.
The deli scale weighs meat and cheese in hundredths of a pound. Sam put \(\frac{5}{10}\) pound of pepperoni on the deli scale. What weight does the deli scale show?
_____ hundredths

Answer:
50 hundredths

Explanation:
\(\frac{5}{10}\) = \(\frac{5 x 10}{10 x 10}\) = \(\frac{50}{100}\).
\(\frac{50}{100}\) written as 50 hundredths.

Page No. 529

Question 1.
Find \(\frac{7}{10}+\frac{5}{100}\)
Think: Write the addends as fractions with a common denominator.
\(\frac{■}{100}\) + \(\frac{■}{100}\) = \(\frac{■}{■}\)
\(\frac{□}{□}\)

Answer:
\(\frac{75}{100}\)

Explanation:
\(\frac{7}{10}+\frac{5}{100}\).
Write the addends as fractions with a common denominator
\(\frac{7}{10}\) = \(\frac{7 X 10}{10 X 10}\) = \(\frac{70}{100}\).
\(\frac{70}{100}+\frac{5}{100}\) = \(\frac{75}{100}\)

Find the sum.

Question 2.
\(\frac{1}{10}+\frac{11}{100}\) = \(\frac{□}{□}\)

Answer:
\(\frac{21}{100}\)

Explanation:
\(\frac{1}{10}+\frac{11}{100}\).
Write the addends as fractions with a common denominator
\(\frac{1}{10}\) = \(\frac{1 X 10}{10 X 10}\) = \(\frac{10}{100}\).
\(\frac{10}{100}+\frac{11}{100}\) = \(\frac{21}{100}\)

Question 3.
\(\frac{36}{100}+\frac{5}{10}\) = \(\frac{□}{□}\)

Answer:
\(\frac{86}{100}\)

Explanation:
\(\frac{36}{100}+\frac{5}{10}\).
Write the addends as fractions with a common denominator
\(\frac{5}{10}\) = \(\frac{5 X 10}{10 X 10}\) = \(\frac{50}{100}\).
\(\frac{36}{100}+\frac{50}{100}\) = \(\frac{86}{100}\).

Question 4.
$0.16 + $0.45 = $ _____

Answer:
$0.61

Explanation:
Think 0.16 as 16 hundredths = \(\frac{16}{100}\).
Think 0.45 as 45 hundredths = \(\frac{45}{100}\).
Write the addends as fractions with a common denominator
\(\frac{16}{100}\) + \(\frac{45}{100}\) = \(\frac{61}{100}\) = 0.61

Question 5.
$0.08 + $0.88 = $ _____

Answer:
$0.96

Explanation:
Think 0.08 as 8 hundredths = \(\frac{8}{100}\).
Think 0.88 as 88 hundredths = \(\frac{88}{100}\).
Write the addends as fractions with a common denominator.
\(\frac{8}{100}\) + \(\frac{88}{100}\) = \(\frac{96}{100}\) = 0.96

Question 6.
\(\frac{6}{10}+\frac{25}{100}\) = \(\frac{□}{□}\)

Answer:
\(\frac{85}{100}[/latex

Explanation:
[latex]\frac{6}{10}+\frac{25}{100}\)
Write the addends as fractions with a common denominator.
\(\frac{6}{10}\) = \(\frac{6 X 10}{10 X 10}\) = \(\frac{60}{100}\).
\(\frac{60}{100}+\frac{25}{100}\) = \(\frac{85}{100}\).

Question 7.
\(\frac{7}{10}+\frac{7}{100}\) = \(\frac{□}{□}\)

Answer:
50 hundredths

Explanation:
\(\frac{7}{10}+\frac{7}{100}\)
Write the addends as fractions with a common denominator.
\(\frac{7}{10}\) = \(\frac{7 X 10}{10 X 10}\) = \(\frac{70}{100}\).
\(\frac{70}{100}+\frac{7}{100}\) = \(\frac{77}{100}\).

Question 8.
$0.55 + $0.23 = $ _____

Answer:
$0.78

Explanation:
Think 0.55 as 55 hundredths = \(\frac{55}{100}\).
Think 0.23 as 23 hundredths = \(\frac{23}{100}\).
Write the addends as fractions with a common denominator.
\(\frac{55}{100}\) + \(\frac{23}{100}\) = \(\frac{78}{100}\) = 0.78.

Question 9.
$0.19 + $0.13 = $ _____

Answer:
$0.32

Explanation:
Think 0.19 as 19 hundredths = \(\frac{19}{100}\).
Think 0.13 as 13 hundredths = \(\frac{13}{100}\).
Write the addends as fractions with a common denominator.
\(\frac{19}{100}\) + \(\frac{13}{100}\) = \(\frac{32}{100}\) = 0.32.

Reason Quantitatively Algebra Write the number that makes the equation true.

Question 10.
\(\frac{20}{100}+\frac{■}{10}\) = \(\frac{60}{100}\)
■ = _____

Answer:
■ = 4

Explanation:
\(\frac{20}{100}+\frac{■}{10}\) = \(\frac{60}{100}\).
Let the unknown number = s.
If s = 4,
\(\frac{20}{100}+\frac{4}{10}\).
Write the addends as fractions with a common denominator.
\(\frac{4}{10}\) = \(\frac{4 X 10}{10 X 10}\) = \(\frac{40}{100}\).
\(\frac{20}{100}+\frac{40}{100}\) = \(\frac{60}{100}\).
So, the unknown number is 4.

Question 11.
\(\frac{2}{10}+\frac{■}{100}\) = \(\frac{90}{100}\)
■ = _____

Answer:
■ = 70

Explanation:
\(\frac{2}{10}+\frac{■}{100}\) = \(\frac{90}{100}\).
Let the unknown number = s.
If s = 70,
\(\frac{2}{10}+\frac{7}{100}\).
Write the addends as fractions with a common denominator.
\(\frac{2}{10}\) = \(\frac{2 X 10}{10 X 10}\) = \(\frac{20}{100}\).
\(\frac{20}{100}+\frac{70}{100}\) = \(\frac{90}{100}\).
So, the unknown number is 70.

Question 12.
Jerry had 1 gallon of ice cream. He used \(\frac{3}{10}\) gallon to make chocolate milkshakes and 0.40 gallon to make vanilla milkshakes. How much ice cream does Jerry have left after making the milkshakes?
_____ gallon

Answer:
0.30 gallon

Explanation:
Jerry had 1 gallon of ice cream. He used \(\frac{3}{10}\) gallon to make chocolate milkshakes and 0.40 gallon to make vanilla milkshakes.
So, write 0.40 as \(\frac{40}{100}\) gallon.
She used \(\frac{3}{10}\) + \(\frac{40}{100}\).
\(\frac{3}{10}\) = \(\frac{3 X 10}{10 X 10}\) = \(\frac{30}{100}\).
\(\frac{30}{100}\) + \(\frac{40}{100}\) = \(\frac{70}{100}\)
Jerry have left 1 – \(\frac{70}{100}\) = \(\frac{30}{100}\) = 0.30 gallon

Page No. 530

Use the table for 13−16.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 47

Question 13.
Dean selects Teakwood stones and Buckskin stones to pave a path in front of his house. How many meters long will each set of one Teakwood stone and one Buckskin stone be?
_____ meter

Answer:
\(\frac{71}{100}\) meter

Explanation:
Dean selects Teakwood stones and Buckskin stones to pave a path in front of his house.
Teakwood stone and one Buckskin stone = \(\frac{3}{10}\) + \(\frac{41}{100}\).
Write the addends as fractions with a common denominator.
\(\frac{3}{10}\) = \(\frac{3 X 10}{10 X 10}\) = \(\frac{30}{100}\).
\(\frac{30}{100}\) + \(\frac{41}{100}\) = \(\frac{71}{100}\)

Go Math 4th Grade Lesson 9.7 Compare Decimals Question 14.
The backyard patio at Nona’s house is made from a repeating pattern of one Rose stone and one Rainbow stone. How many meters long is each pair of stones?
_____ meter

Answer:
\(\frac{68}{100}\) meter

Explanation:
The backyard patio at Nona’s house is made from a repeating pattern of one Rose stone and one Rainbow stone.
Each pair of stone = \(\frac{8}{100}\) + \(\frac{6}{10}\).
\(\frac{6}{10}\) = \(\frac{6 X 10}{10 X 10}\) = \(\frac{60}{100}\).
Each pair of stone = \(\frac{8}{100}\) + \(\frac{60}{100}\) = \(\frac{68}{100}\).

Question 15.
For a stone path, Emily likes the look of a Rustic stone, then a Rainbow stone, and then another Rustic stone. How long will the three stones in a row be? Explain.
_____ meter

Answer:
\(\frac{90}{100}\) meter

Explanation:
For a stone path, Emily likes the look of a Rustic stone, then a Rainbow stone, and then another Rustic stone. If three stones in a row, then
\(\frac{15}{100}\) + \(\frac{6}{10}\) + \(\frac{15}{100}\).
\(\frac{30}{100}\) + \(\frac{6}{10}\).
\(\frac{6}{10}\) = \(\frac{6 X 10}{10 X 10}\) = \(\frac{60}{100}\).
\(\frac{30}{100}\) + \(\frac{60}{100}\) = \(\frac{90}{100}\).

Question 16.
Which two stones can you place end-to-end to get a length of 0.38 meter? Explain how you found your answer.
Type below:
________

Answer:
If you add Teakwood stones and Rose stones, then you get a length of 0.38 meter.
\(\frac{3}{10}\) + \(\frac{8}{100}\).
\(\frac{3}{10}\) = \(\frac{3 X 10}{10 X 10}\) = \(\frac{30}{100}\).
\(\frac{30}{100}\) + \(\frac{8}{100}\) = latex]\frac{38}{100}[/latex] = 0.38.
If you add any other two stones, the answer will not equal to 0.38.

Question 17.
Christelle is making a dollhouse. The dollhouse is \(\frac{6}{10}\) meter tall without the roof. The roof is \(\frac{15}{100}\) meter high. What is the height of the dollhouse with the roof? Choose a number from each column to complete an equation to solve.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 48
\(\frac{□}{□}\) meter

Answer:
\(\frac{60}{100}\) + \(\frac{15}{100}\) = \(\frac{75}{100}\) meter

Explanation:
\(\frac{6}{10}\) + \(\frac{15}{100}\).
\(\frac{6}{10}\) = \(\frac{6 X 10}{10 X 10}\) = \(\frac{60}{100}\).
\(\frac{60}{100}\) + \(\frac{15}{100}\) = \(\frac{75}{100}\).

Common Core – New – Page No. 531

Add Fractional Parts of 10 and 100

Find the sum.

Question 1.
\(\frac{2}{10}+\frac{43}{100}\) Think: Write \(\frac{2}{10}\) as a fraction with a denominator of 100: \(\frac{2 \times 10}{10 \times 10}=\frac{20}{100}\)
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 49

Answer:
\(\frac{63}{100}\)

Explanation:
Think: Write \(\frac{2}{10}\) as a fraction with a denominator of 100: \(\frac{2 \times 10}{10 \times 10}=\frac{20}{100}\)
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 49

Question 2.
\(\frac{17}{100}+\frac{6}{10}\)
\(\frac{□}{□}\)

Answer:
\(\frac{77}{100}\)

Explanation:
\(\frac{17}{100}+\frac{6}{10}\).
\(\frac{6 \times 10}{10 \times 10}=\frac{60}{100}\)
\(\frac{17}{100}+\frac{60}{100}\) = \(\frac{77}{100}\)

Question 3.
\(\frac{9}{100}+\frac{4}{10}\)
\(\frac{□}{□}\)

Answer:
\(\frac{49}{100}\)

Explanation:
\(\frac{9}{100}+\frac{4}{10}\).
\(\frac{4 \times 10}{10 \times 10}=\frac{40}{100}\)
\(\frac{9}{100}+\frac{40}{100}\) = \(\frac{49}{100}\)

Question 4.
\(\frac{7}{10}+\frac{23}{100}\)
\(\frac{□}{□}\)

Answer:
\(\frac{93}{100}\)

Explanation:
\(\frac{7}{10}+\frac{23}{100}\).
\(\frac{7 \times 10}{10 \times 10}=\frac{70}{100}\)
\(\frac{70}{100}+\frac{23}{100}\) = \(\frac{93}{100}\)

Question 5.
$0.48 + $0.30
$ _____

Answer:
$0.78

Explanation:
Think $0.48 as \(\frac{48}{100}\).
Think $0.30 as \(\frac{30}{100}\).
\(\frac{48}{100}+\frac{30}{100}\) = \(\frac{78}{100}\) = $0.78

Question 6.
$0.25 + $0.34
$ _____

Answer:
$0.59

Explanation:
Think $0.25 as \(\frac{25}{100}\).
Think $0.34 as \(\frac{34}{100}\).
\(\frac{25}{100}+\frac{34}{100}\) = \(\frac{59}{100}\) = $0.59

Question 7.
$0.66 + $0.06
$ _____

Answer:
$0.72

Explanation:
Think $0.66 as \(\frac{66}{100}\).
Think $0.06 as \(\frac{6}{100}\).
\(\frac{66}{100}+\frac{6}{100}\) = \(\frac{72}{100}\) = $0.72

Problem Solving

Question 8.
Ned’s frog jumped \(\frac{38}{100}\) meter. Then his frog jumped \(\frac{4}{10}\) meter. How far did Ned’s frog jump in all?
\(\frac{□}{□}\)

Answer:
\(\frac{78}{100}\) meter

Explanation:
Ned’s frog jumped \(\frac{38}{100}\) meter. Then his frog jumped \(\frac{4}{10}\) meter.
So, together \(\frac{38}{100}\) + \(\frac{4}{10}\) jumped.
\(\frac{4}{10}\) = \(\frac{4 \times 10}{10 \times 10}=\frac{40}{100}\).
\(\frac{38}{100}\) + \(\frac{40}{100}\) = \(\frac{78}{100}\).

Question 9.
Keiko walks \(\frac{5}{10}\) kilometer from school to the park. Then she walks \(\frac{19}{100}\) kilometer from the park to her home. How far does Keiko walk in all?
\(\frac{□}{□}\)

Answer:
\(\frac{69}{100}\) kilometer

Explanation:
Keiko walks \(\frac{5}{10}\) kilometer from school to the park. Then she walks \(\frac{19}{100}\) kilometer from the park to her home.
Total = \(\frac{5}{10}\) + \(\frac{19}{100}\) kilometer.
\(\frac{5}{10}\) = \(\frac{5 \times 10}{10 \times 10}=\frac{50}{100}\).
\(\frac{50}{100}\) + \(\frac{19}{100}\) = \(\frac{69}{100}\).

Common Core – New – Page No. 532

Lesson Check

Question 1.
In a fish tank, \(\frac{2}{10}\) of the fish were orange and \(\frac{5}{100}\) of the fish were striped. What fraction of the fish were orange or striped?
Options:
a. \(\frac{7}{10}\)
b. \(\frac{52}{100}\)
c. \(\frac{25}{100}\)
d. \(\frac{7}{100}\)

Answer:
c. \(\frac{25}{100}\)

Explanation:
In a fish tank, \(\frac{2}{10}\) of the fish were orange and \(\frac{5}{100}\) of the fish were striped.
To find the raction of the fish were orange or striped Add \(\frac{2}{10}\) and \(\frac{5}{100}\).
\(\frac{2}{10}\) = \(\frac{2 \times 10}{10 \times 10}=\frac{20}{100}\).
\(\frac{20}{100}\) + \(\frac{5}{100}\) = \(\frac{25}{100}\).

Question 2.
Greg spends $0.45 on an eraser and $0.30 on a pen. How much money does Greg spend in all?
Options:
a. $3.45
b. $0.75
c. $0.48
d. $0.15

Answer:
b. $0.75

Explanation:
Think $0.45 as \(\frac{45}{100}\).
Think $0.30 as \(\frac{30}{100}\).
\(\frac{45}{100}+\frac{30}{100}\) = \(\frac{75}{100}\) = $0.75.

Spiral Review

Question 3.
Phillip saves $8 each month. How many months will it take him to save at least $60?
Options:
a. 6 months
b. 7 months
c. 8 months
d. 9 months

Answer:
c. 8 months

Explanation:
Phillip saves $8 each month.
To save at least $60, \(\frac{60}{8}\) = 8 months (approximately)

Question 4.
Ursula and Yi share a submarine sandwich. Ursula eats \(\frac{2}{8}\) of the sandwich. Yi eats \(\frac{3}{8}\) of the sandwich. How much of the sandwich do the two friends eat?
Options:
a. \(\frac{1}{8}\)
b. \(\frac{4}{8}\)
c. \(\frac{5}{8}\)
d. \(\frac{6}{8}\)

Answer:
c. \(\frac{5}{8}\)

Explanation:
Ursula and Yi share a submarine sandwich. Ursula eats \(\frac{2}{8}\) of the sandwich. Yi eats \(\frac{3}{8}\) of the sandwich.
Two friends eat \(\frac{2}{8}\) + \(\frac{3}{8}\) = \(\frac{5}{8}\)

Question 5.
A carpenter has a board that is 8 feet long. He cuts off two pieces. One piece is 3 \(\frac{1}{2}\) feet long and the other is 2 \(\frac{1}{3}\) feet long. How much of the board is left?
Options:
a. 2 \(\frac{1}{6}\)
b. 2 \(\frac{5}{6}\)
c. 3 \(\frac{1}{6}\)
d. 3 \(\frac{5}{6}\)

Answer:
a. 2 \(\frac{1}{6}\)

Explanation:
3 \(\frac{1}{2}\) = \(\frac{7}{2}\).
2 \(\frac{1}{3}\) = \(\frac{7}{3}\).
A carpenter has a board that is 8 feet long. He cuts off two pieces. One piece is 3 \(\frac{1}{2}\) feet long and the other is 2 \(\frac{1}{3}\) feet long.
\(\frac{7}{2}\) + \(\frac{7}{3}\) = \(\frac{7 \times 3}{2\times 3} + [latex]\frac{7 \times 2}{3\times 2} = [latex]\frac{21}{6}\) + \(\frac{14}{6}\) = \(\frac{35}{6}\) = 5\(\frac{5}{6}\).
He left 8 – 5\(\frac{5}{6}\).
7\(\frac{6}{6}\) – 5\(\frac{5}{6}\) = 2\(\frac{1}{6}\)

Question 6.
Jeff drinks \(\frac{2}{3}\) of a glass of juice. Which fraction is equivalent to \(\frac{2}{3}\)?
Options:
a. \(\frac{1}{3}\)
b. \(\frac{3}{2}\)
c. \(\frac{3}{6}\)
d. \(\frac{8}{12}\)

Answer:
d. \(\frac{8}{12}\)

Explanation:
\(\frac{8}{12}\) is divided by 4. So, \(\frac{8}{12}\) = \(\frac{2}{3}\).

Page No. 535

Question 1.
Compare 0.39 and 0.42. Write <, >, or =.
Shade the model to help.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 50
0.39 ____ 0.42

Answer:
grade 4 chapter 9 Relate Fractions and Decimals Image 1 535
0.39 < 0.42

Compare. Write <, >, or =.

Question 2.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 51
0.26 ____ 0.23

Answer:
0.26 > 0.23

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 2 535
The digits in the one’s and tenths place are the same. Compare the digits in the hundredths place. 6 > 3. So, 0.26 > 0.23.

Question 3.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 52
0.7 ____ 0.54

Answer:
0.7 > 0.54

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 3 535
The digits in the ones place are the same. Compare the digits in the tenths place. 0.7 = 0.70. 7 > 5. So, 0.70 > 0.54.

Question 4.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 53
1.15 ____ 1.3

Answer:
1.15 < 1.3

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 4 535
The digits in the ones place are the same. Compare the digits in the tenths place. 1 < 3. So, 1.15 < 1.3

Question 5.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 54
4.5 ____ 2.89

Answer:
4.5 > 2.89

Explanation:
grade 4 chapter 9 Relate Fractions and Decimals Image 5 535
Compare one’s digits. 4 > 2 . So, 4.5 > 2.89

Compare. Write <, >, or =.

Question 6.
0.9 ____ 0.81

Answer:
0.9 > 0.81

Explanation:
0.9 is 9 tenths, which is equivalent to 90 hundredths.
0.81 is 81 hundredths.
90 hundredths > 81 hundredths. So, 0.9 > 0.81.

Question 7.
1.06 ____ 0.6

Answer:
1.06 > 0.6

Explanation:
1.06 is 106 hundredths.
0.6 is 6 tenths, which is equivalent to 60 hundredths.
106 hundredths > 60 hundredths. So, 1.06 > 0.6.

Question 8.
0.25 ____ 0.3

Answer:
0.25 < 0.3

Explanation:
0.25 is 25 hundredths.
0.3 is 3 tenths, which is equivalent to 30 hundredths.
25 hundredths < 30 hundredths. So, 0.25 < 0.3.

Question 9.
2.61 ____ 3.29

Answer:
2.61 < 3.29

Explanation:
2.61 is 261 hundredths.
3.29 is 329 hundredths.
261 hundredths < 329 hundredths. So, 2.61 < 3.29.

Reason Quantitatively Compare. Write <, >, or =.

Question 10.
0.30 ____ \(\frac{3}{10}\)

Answer:
0.30 = \(\frac{3}{10}\)

Explanation:
0.30 is 30 hundredths.
\(\frac{3}{10}\) is 3 tenths, which is equal to 30 hundredths.
30 hundredths = 30 hundredths. So, 0.30 = \(\frac{3}{10}\).

Question 11.
\(\frac{4}{100}\) ____ 0.2

Answer:
\(\frac{4}{100}\) < 0.2

Explanation:
\(\frac{4}{100}\) is 4 hundredths.
0.2 is 2 tenths, which is equal to 20 hundredths.
4 hundredths < 20 hundredths. So, \(\frac{4}{100}\) < 0.2

Question 12.
0.15 ____ \(\frac{1}{10}\)

Answer:
0.15 > \(\frac{1}{10}\)

Explanation:
0.15 is 15 hundredths.
\(\frac{1}{10}\) is 1 tenths, which is equal to 10 hundredths.
15 hundredths > 10 hundredths. So, 0.15 > \(\frac{1}{10}\).

Question 13.
\(\frac{1}{8}\) ____ 0.8

Answer:
latex]\frac{1}{8}[/latex] < 0.8

Explanation:
\(\frac{1}{8}\) = 0.25 is 25 hundredths.
0.8 is 8 tenths, which is equal to 80 hundredths.
25 hundredths < 80 hundredths. So, \(\frac{1}{8}\) < 0.8

Question 14.
Robert had $14.53 in his pocket. Ivan had $14.25 in his pocket. Matt had $14.40 in his pocket. Who had more money, Robert or Matt? Did Ivan have more money than either Robert or Matt?
________

Answer:
Robert had more money.
No, Ivan didn’t have more money than either Robert or Matt.

Explanation:
Compare Robert, Ivan, and Matt money to know who had more money.
The digits in the one’s place are the same. Compare the digits in the tenths place. 5 > 4 > 2. So, Robert had more money.

Page No. 536

Question 15.
Ricardo and Brandon ran a 1500-meter race. Ricardo finished in 4.89 minutes. Brandon finished in 4.83 minutes. What was the time of the runner who finished first?
a. What are you asked to find?–
Type below:
________

Answer:
The time of the runner who finished first.

Question 15.
b. What do you need to do to find the answer?
Type below:
________

Answer:
I have to compare the times to find the time that is less.

Question 15.
c. Solve the problem.
Type below:
________

Answer:
Use place-value chart
grade 4 chapter 9 Relate Fractions and Decimals Image 1 536
The digits of the one’s and tenths are equal. So, compare hundredths to find greater time.
9 > 3.
4.83 minutes are less than 4.89.

Question 15.
d. What was the time of the runner who finished first?
______ minutes

Answer:
4.83 minutes

Question 15.
e. Look back. Does your answer make sense? Explain.
_____

Answer:
Yes. The time of the runner who finished first is the lesser time of the two. Since 4.83, 4.89, then 4.83 minutes is the time of the runner who finished first.

Question 16.
The Venus flytrap closes in 0.3 second and the waterwheel plant closes in 0.2 second. What decimal is halfway between 0.2 and 0.3? Explain.
_____

Answer:
0.2 is 2 tenths, which is equal to the 20 hundredths.
0.3 is 3 tenths, which is equal to 30 hundredths.
The halfway between 20 hundredths and 30 hundredths is 25 hundredths.
So, the answer is 0.25.

Question 17.
For numbers 17a–17c, select True or False for the inequality.
a. 0.5 > 0.53
i. True
ii. False

Answer:
ii. False

Explanation:
0.5 is 50 hundredths.
0.53 is 53 hundredths.
50 hundredths < 53 hundredths. So, 0.5 < 0.53. So, the answer is false.

Question 17.
b. 0.35 < 0.37
i. True
ii. False

Answer:
i. True

Explanation:
0.35 is 35 hundredths.
0.37 is 37 hundredths.
35 hundredths < 37 hundredths.
0.35 < 0.37.
So, the answer is true.

Question 17. c. $1.35 > $0.35
i. True
ii. False

Answer:
i. True

Explanation:
$1.35 is 135 hundredths.
$0.35 is 35 hundredths.
135 hundredths > 35 hundredths.
$1.35 > $0.35.
So, the answer is correct.

Common Core – New – Page No. 537

Compare Decimals

Compare. Write <. >, or =.

Question 1.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 55
Think: 3 tenths is less than 5 tenths. So, 0.35 < 0.53

Answer:
0.35 < 0.53

Explanation:
3 tenths is less than 5 tenths. So, 0.35 < 0.53

Question 2.
0.6 ______ 0.60

Answer:
0.6 = 0.60

Explanation:
0.6 is 6 tenths can write as 6 tenths and 0 hundredths. So, 0.6 = 0.60.

Question 3.
0.24 ______ 0.31

Answer:
0.24 < 0.31

Explanation:
2 tenths is less than 3 tenths. So, 0.24 < 0.31.

Question 4.
0.94 ______ 0.9

Answer:
0.94 > 0.9

Explanation:
The digits of tenths are equal. So, compare hundredths. 4 hundredths is greater than 0 hundredths. So, 0.94 > 0.9.

Go Math 4th Grade Chapter 9 Test Answer Key Question 5.
0.3 ______ 0.32

Answer:
0.3 < 0.32

Explanation:
The digits of tenths are equal. So, compare hundredths. 0 hundredths is less than 2 hundredths. So, 0.3 < 0.32.

Question 6.
0.45 ______ 0.28

Answer:
0.45 > 0.28

Explanation:
4 tenths is greater than 2 tenths. So, 0.45 > 0.28.

Question 7.
0.39 ______ 0.93

Answer:
0.39 < 0.93

Explanation:
3 tenths is less than 9 tenths. So, 0.39 < 0.93.

Use the number line to compare. Write true or false.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals Common Core - New img 56

Question 8.
0.8 > 0.78
______

Answer:
true

Explanation:
0.78 is in between 0.7 and 0.8 that is less than 0.8. So, 0.8 > 0.78.

Question 9.
0.4 > 0.84
______

Answer:
false

Explanation:
0.4 is less than 0.84 and the left side of the number line. So, 0.4 < 0.84. The answer is false.

Question 10.
0.7 > 0.70
______

Answer:
false

Explanation:
0.7 is 7 tenths and 70 hundredths. 0.7 = 0.70. So, the answer is false.

Question 11.
0.4 > 0.04
______

Answer:
true

Explanation:
0.04 is less than 0.4 and it is left side of the 0.1 on the number line. 0.1 is less than 0.4. So, the given answer is true.

Compare. Write true or false.

Question 12.
0.09 > 0.1
______

Answer:
false

Explanation:
0 tenths is less than 1 tenths. So, 0.09 < 0.1. So, the answer is false.

Question 13.
0.24 = 0.42
______

Answer:
false

Explanation:
2 tenths is less than 4 tenths. So, 0.24 < 0.42. So, the answer is false.

Question 14.
0.17 < 0.32 ______

Answer:
true

Explanation:
1 tenths is less than 3 tenths. So, 0.17 < 0.32. So, the answer is true.

Question 15.
0.85 > 0.82
______

Answer:
true

Explanation:
The digits of tenths are equal. So, compare hundredths. 5 hundredths is greater than 2 hundredths. So, 0.85 > 0.82.

Question 16.
Kelly walks 0.7 mile to school. Mary walks 0.49 mile to school. Write an inequality using <, > or = to compare the distances they walk to school.
0.7 ______ 0.49

Answer:
0.7 > 0.49

Explanation:
7 tenths is greater than 4 tenths. So, 0.7 > 0.49.

Question 17.
Tyrone shades two decimal grids. He shades 0.03 of the squares on one grid blue. He shades 0.3 of another grid red. Which grid has the greater part shaded?
0.03 ______ 0.3

Answer:
0.03 < 0.3

Explanation:
0.03 is 3 hundredths.
0.3 is 3 tenths, which is equal to 30 hundredths.
3 hundredths < 30 hundredths. So, 0.03 < 0.3.

Common Core – New – Page No. 538

Lesson Check

Question 1.
Bob, Cal, and Pete each made a stack of baseball cards. Bob’s stack was 0.2 meter high. Cal’s stack was 0.24 meter high. Pete’s stack was 0.18 meter high.
Which statement is true?
Options:
a. 0.02 > 0.24
b. 0.24 > 0.18
c. 0.18 > 0.2
d. 0.24 = 0.2

Answer:
b. 0.24 > 0.18

Explanation:
2 tenths is greater than 1 tenth. So, 0.24 > 0.18.

Question 2.
Three classmates spent money at the school supplies store. Mark spent 0.5 dollar, Andre spent 0.45 dollar, and Raquel spent 0.52 dollar. Which
statement is true?
Options:
a. 0.45 > 0.5
b. 0.52 < 0.45
c. 0.5 = 0.52
d. 0.45 < 0.5

Answer:
d. 0.45 < 0.5

Explanation:
4 tenths is less than 5 tenth. So, 0.45 > 0.5.

Spiral Review

Question 3.
Pedro has $0.35 in his pocket. Alice has $0.40 in her pocket. How much money do Pedro and Alice have in their pockets altogether?
Options:
a. $0.05
b. $0.39
c. $0.75
d. $0.79

Answer:
c. $0.75

Explanation:
Pedro has $0.35 in his pocket. Alice has $0.40 in her pocket.
Together = $0.35 + $0.40 = $0.75.

Question 4.
The measure 62 centimeters is equivalent to \(\frac{62}{100}\) meter. What is this measure written as a decimal?
Options:
a. 62.0 meters
b. 6.2 meters
c. 0.62 meter
d. 0.6 meter

Answer:
c. 0.62 meter

Explanation:
\(\frac{62}{100}\) = 0.62 meter.

Question 5.
Joel has 24 sports trophies. Of the trophies, \(\frac{1}{8}\) are soccer trophies. How many soccer trophies does Joel have?
Options:
a. 2
b. 3
c. 4
d. 6

Answer:
b. 3

Explanation:
Joel has 24 sports trophies. Of the trophies, \(\frac{1}{8}\) are soccer trophies.
So, \(\frac{1}{8}\) X 24 = 3 soccer trophies.

Question 6.
Molly’s jump rope is 6 \(\frac{1}{3}\) feet long. Gail’s jump rope is 4 \(\frac{2}{3}\) feet long. How much longer is Molly’s jump rope?
Options:
a. 1 \(\frac{1}{3}\) feet
b. 1 \(\frac{2}{3}\) feet
c. 2 \(\frac{1}{3}\) feet
d. 2 \(\frac{2}{3}\) feet

Answer:
b. 1 \(\frac{2}{3}\) feet

Explanation:
6 \(\frac{1}{3}\) feet = \(\frac{19}{3}\) feet.
4 \(\frac{2}{3}\) feet = \(\frac{14}{3}\) feet.
\(\frac{19}{3}\) – \(\frac{14}{3}\) = \(\frac{5}{3}\) feet = b. 1 \(\frac{2}{3}\) feet.

Page No. 539

Question 1.
Select a number shown by the model. Mark all that apply.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 57
Type below:
________

Answer:
1 \(\frac{4}{10}\) = \(\frac{14}{10}\) = 1.4

Explanation:
from the given image, there is one whole number and \(\frac{4}{10}\) of another model. So, 1 \(\frac{4}{10}\) = \(\frac{14}{10}\) = 1.4

Question 2.
Rick has one dollar and twenty-seven cents to buy a notebook. Which names this money amount in terms of dollars? Mark all that apply.
Options:
a. 12.7
b. 1.027
c. $1.27
d. 1.27
e. 1 \(\frac{27}{100}\)
f. \(\frac{127}{10}\)

Answer:
c. $1.27
d. 1.27
e. 1 \(\frac{27}{100}\)

Explanation:
one dollar and twenty-seven cents = 1 \(\frac{27}{100}\) = 1.27 = $1.27

Question 3.
For numbers 3a–3e, select True or False for the statement.
a. 0.9 is equivalent to 0.90.
i. True
ii. False

Answer:
i. True

Explanation:
0.9 is 9 tenths, which is equal to 90 hundredths. 0.9 = 0.90. So, the answer is true.

Question 3.
b. 0.20 is equivalent to \(\frac{2}{100}\)
i. True
ii. False

Answer:
ii. False

Explanation:
\(\frac{2}{100}\) = 0.02. So, the given answer is false.

Question 3.
c. \(\frac{80}{100}\) is equivalent to \(\frac{8}{10}\).
i. True
ii. False

Answer:
i. True

Explanation:
Divide \(\frac{80}{100}\) by 10 = \(\frac{8}{10}\). So, the answer is true.

Question 3.
d. \(\frac{6}{10}\) is equivalent to 0.60.
i. True
ii. False

Answer:
i. True

Explanation:
\(\frac{6}{10}\) is 0.6. 0.6 is 6 tenths, which is equal to 6 tenths and 0 hundredths. 0.60. So, 0.6 =0.60. The answer is true.

Question 3.
e. 0.3 is equivalent to \(\frac{3}{100}\)
i. True
ii. False

Answer:
ii. False

Explanation:
0.3 is 3 tenths, which is equal to 3 tenths and 0 hundredths. \(\frac{3}{100}\) is 0 tenths. So, the answer is false.

Page No. 540

Question 4.
After selling some old books and toys, Gwen and her brother Max had 5 one-dollar bills, 6 quarters, and 8 dimes. They agreed to divide the money equally.
Part A
Wat is the total amount of money that Gwen and Max earned?
Explain.
$ _____

Answer:
$7.30

Explanation:
After selling some old books and toys, Gwen and her brother Max had 5 one-dollar bills, 6 quarters, and 8 dimes.
5 + (6 X 25/100) + (8 X 10/100) = 5 + 150/100 + 80/100 = 5 + 230/100 = 730/100 = 7.30

Question 4.
Part B
Max said that he and Gwen cannot get equal amounts of money because 5 one-dollar bills cannot be divided evenly. Do you agree with Max?
Explain.
_____

Answer:
ii. False

Explanation:
No; they can share the 3 quarters and 4 dimes each. Then, they can change the 5 dollar bills into quarters. 1 dollar = 4 quarters. So, 5 dollars = 5 X 4 or 20 quarters. They can each get 10 quarters. So, each person has a total of 13 quarters and 4 dimes. $3.25 + $0.40 = $3.65

Question 5.
Harrison rode his bike \(\frac{6}{10}\) of a mile to the park. Shade the model. Then write the decimal to show how far Harrison rode his bike.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 58
Harrison rode his bike _______ mile to the park.
_____

Answer:
grade 4 chapter 9 Relate Fractions and Decimals Image 1 540
Harrison rode his bike 0.6 mile to the park.

Explanation:
6 boxes are shaded out of 10.

Question 6.
Amaldo spent \(\frac{88}{100}\) of a dollar on a souvenir pencil from Zion National Park in Utah. What is \(\frac{88}{100}\) written as a decimal in terms of dollars?
_____

Answer:
0.88

Explanation:
Write down 88 with the decimal point 2 spaces from the right (because 100 has 2 zeros). 0.88

Question 7.
Tran has $5.82. He is saving for a video game that costs $8.95.
Tran needs _______ more to have enough money for the game.
_____

Answer:
$3.13

Explanation:
Tran has $5.82. He is saving for a video game that costs $8.95. To know more amount need to buy a video game = $8.95 – $5.82 = $3.13

Page No. 541

Question 8.
Cheyenne lives \(\frac{7}{10}\) mile from school. A fraction in hundredths equal to \(\frac{7}{10}\) is
\(\frac{□}{□}\)

Answer:
\(\frac{70}{100}\)

Explanation:
\(\frac{7}{10}\) = \(\frac{7 \times 10}{10 \times 10}\) = \(\frac{70}{100}\)

Question 9.
Write a decimal in tenths that is less than 2.42 but greater than 2.0.
Type below:
__________

Answer:
2.1, 2.2, 2.3, 2.4

Explanation:
The decimal in greater than 2.0 and below the 2.4 are 2.1, 2.2, 2.3, 2.4

Question 10.
Kylee and two of her friends are at a museum. They find two quarters and one dime on the ground.
Part A
If Kylee and her friends share the money equally, how much will each person get? Explain how you found your answer.
$ _____
Explain:
__________

Answer:
$0.20; Two quarters and one dime are equal to $0.50 + $0.10 = $0.60. Take $0.60 as 6 dimes. When 6 dimes divide equally, each person will receive 2 dimes or $0.20.

Question 10.
Part B
Kylee says that each person will receive \(\frac{2}{10}\) of the money that was found. Do you agree? Explain.
__________

Answer:
No; Each person receives $0.20, which is 2/10 of a dollar, not 2/10 of the money that was found. Since there are 3 people who share the money equally, each person will receive 1/3 of the money.

Question 11.
Shade the model to show 1 \(\frac{52}{100}\). Then write the mixed number in decimal form.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 59
_____

Answer:
grade 4 chapter 9 Relate Fractions and Decimals Image 2 541
1.52

Page No. 542

Question 12.
Henry is making a recipe for biscuits. A recipe calls for \(\frac{5}{10}\) kilogram flour and \(\frac{9}{100}\) kilogram sugar.
Part A
If Henry measures correctly and combines the two amounts, how much flour and sugar will he have? Show your work.
\(\frac{□}{□}\) kilogram

Answer:
\(\frac{59}{100}\) kilogram

Explanation:
Henry is making a recipe for biscuits. A recipe calls for \(\frac{5}{10}\) kilogram flour and \(\frac{9}{100}\) kilogram sugar. So, add \(\frac{5}{10}\) kilogram flour and \(\frac{9}{100}\) kilogram flour.
\(\frac{5}{10}\) = \(\frac{5 \times 10}{10 \times 10}\) = \(\frac{50}{100}\).
\(\frac{50}{100}\) + \(\frac{9}{100}\) = \(\frac{59}{100}\).

Question 12.
Part B
How can you write your answer as a decimal?
__________ kilogram

Answer:
0.59 kilogram

Explanation:
\(\frac{59}{100}\) = 0.59

Question 13.
An orchestra has 100 musicians. \(\frac{4}{10}\) of them play string instruments—violin, viola, cello, double bass, guitar, lute, and harp. What decimal is equivalent to \(\frac{4}{10}\)?
__________

Answer:
0.4 or 0.40

Explanation:
\(\frac{4}{10}\) = 0.4 = 0.40

Question 14.
Complete the table.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 60

Answer:
grade 4 chapter 9 Relate Fractions and Decimals Image 3 541

Question 15.
The point on the number line shows the number of seconds it took an athlete to run the forty-yard dash. Write the decimal that correctly names the point.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 61

Answer:
\(\frac{70}{100}\)

Explanation:
The point is in between 5\(\frac{5}{10}\) and 6.0. The point after the 5\(\frac{5}{10}\) is 5\(\frac{6}{10}\) = 5.6

Page No. 543

Question 16.
Ingrid is making a toy car. The toy car is \(\frac{5}{10}\) meter high without the roof. The roof is \(\frac{18}{100}\) meter high. What is the height of the toy car with the roof? Choose a number from each column to complete an equation to solve.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 62
Type below:
__________

Answer:
\(\frac{50}{100}\) + \(\frac{18}{100}\) = \(\frac{68}{100}\) meter high

Explanation:
\(\frac{5}{10}\) = \(\frac{5 \times 10}{10 \times 10}\) = \(\frac{50}{100}\).
\(\frac{50}{100}\) + \(\frac{18}{100}\) = \(\frac{68}{100}\).

Question 17.
Callie shaded the model to represent the questions she answered correctly on a test. What decimal represents the part of the model that is shaded?
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 63
represents _____

Answer:
0.81

Explanation:
81 boxes are shaded out of 100. So, \(\frac{81}{100}\) = 0.81

Question 18.
For numbers 18a–18f, select True or False for the inequality.
a. 0.21 < 0.27
i. True
ii. False

Answer:
i. True

Explanation:
The digits in the one’s and tenths place are the same. Compare the digits in the hundredths place. 1 < 7. So, 0.21 < 0.27. The answer is true.

Question 18. b. 0.4 > 0.45

i. True
ii. False

Answer:
ii. False

Explanation:
0.4 = 0.40
The digits in the one’s and tenths place are the same. Compare the digits in the hundredths place. 0 < 5. So, 0.4 < 0.46. The answer is false.

Question 18.
c. $3.21 > $0.2
i. True
ii. False

Answer:
i. True

Explanation:
3 ones is greater than 0’s. So, $3.21 > $0.2

Question 18.
d. 1.9 < 1.90
i. True
ii. False

Answer:
ii. False

Explanation:
1.9 = 1.90. So, the answer is false

Question 18. e. 0.41 = 0.14
i. True
ii. False

Answer:
ii. False

Explanation:
The digits in the one’s are the same. Compare the digits in the tenths place. 4 > 1. So, 0.41 > 0.14. The answer is false.

Question 18. f. 6.2 > 6.02
i. True
ii. False

Answer:
i. True

Explanation:
2 tenths is greater than 0 tenths. So, 6.2 > 6.02. The answer is true.

Question 19.
Fill in the numbers to find the sum.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 64
Type below:
__________

Answer:
\(\frac{4}{10}\) + \(\frac{40}{100}\) = \(\frac{8}{10}\)

Explanation:
Let the unknown numbers are A and B.
\(\frac{4}{10}\) + \(\frac{A}{100}\) = \(\frac{8}{B}\)
If A = 40 and B = 10, then \(\frac{4}{10}\) + \(\frac{40}{100}\) = \(\frac{8}{10}\).

Page No. 544

Question 20.
Steve is measuring the growth of a tree. He drew this model to show the tree’s growth in meters. Which fraction, mixed number, or decimal does the model show? Mark all that apply.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 65
Options:
a. 1.28
b. 12.8
c. 0.28
d. 2 \(\frac{8}{100}\)
e. 1 \(\frac{28}{100}\)
f. 1 \(\frac{28}{10}\)

Answer:
a. 1.28
e. 1 \(\frac{28}{100}\)

Explanation:
From the given image, it has one model of 1 whole number and other model is shades 24 boxes out of 100. So, 1 \(\frac{28}{100}\) = \(\frac{128}{100}\) = 1.28 is the answer.

Question 21.
Luke lives 0.4 kilometer from a skating rink. Mark lives 0.25 kilometer from the skating rink.
Part A
Who lives closer to the skating rink? Explain.
_____

Answer:
Mark lives closer to the skating rink

Explanation:
0.4 is 4 tenths and 0.25 is 2 tenths 5 hundredths. Compare the tenths, since
4 tenths > 2 tenths. Luke lives farther from the rink. So, Mark lives closer.

Question 21.
Part B
How can you write each distance as a fraction? Explain.
Type below:
__________

Answer:
\(\frac{4}{10}\) and \(\frac{25}{100}\)

Explanation:
0.4 is 4 tenths. So, \(\frac{4}{10}\) and 0.25 is 25 hundredths. So, \(\frac{25}{100}\).

Question 21.
Part C
Luke is walking to the skating rink to pick up a practice schedule. Then he is walking to Mark’s house. Will he walk more than a kilometer or less than a kilometer? Explain.
__________

Answer:
Less than a kilometer; \(\frac{4}{10}\) < \(\frac{5}{10}\) or \(\frac{1}{2}\) and \(\frac{25}{100}\) < \(\frac{50}{100}\) or \(\frac{1}{2}\).
\(\frac{4}{10}\) + \(\frac{25}{100}\) < \(\frac{1}{2}\) + \(\frac{1}{2}\). So, \(\frac{1}{2}\) + \(\frac{1}{2}\) = 1.
Therefore, \(\frac{4}{10}\) + \(\frac{25}{100}\) < 1.

Page No. 551

Question 1.
Draw and label \(\overline{A B}\) in the space at the right.
\(\overline{A B}\) is a __________ .
__________

Answer:
grade 4 chapter 9 review test image 1 551
\(\overline{A B}\) is a line segment.

Draw and label an example of the figure.

Question 2.
\(\underset { XY }{ \longleftrightarrow } \)
Type below:
__________

Answer:
grade 4 chapter 9 review test image 2 551
\(\underset { XY }{ \longleftrightarrow } \) is a line

Question 3.
obtuse ∠K
Type below:
__________

Answer:
grade 4 chapter 9 review test image 3 551
Angle K is greater than a right angle and less than a straight angle.

Question 4.
∠CDE
Type below:
__________

Answer:
grade 4 chapter 9 review test image 4 551
angle CDE

Use Figure M for 5 and 6.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 66

Question 5.
Name a line segment.
Type below:
__________

Answer:
line segment TU

Explanation:
TU line is a straight path of points that continues without an end in both directions.

Question 6.
Name a right angle.
Type below:
__________

Answer:
Angle TUW

Explanation:
TUW is a right angle that forms a square corner.

Draw and label an example of the figure.

Question 7.
\(\overrightarrow{P Q}\)
Type below:
__________

Answer:
grade 4 chapter 9 review test image 5 551
\(\overrightarrow{P Q}\) is a ray.

Question 8.
acute ∠RST
Type below:
__________

Answer:
grade 4 chapter 9 review test image 6 551
Angle RST

Question 9.
straight ∠WXZ
Type below:
__________

Answer:
grade 4 chapter 9 review test image 7 551

Use Figure F for 10–15.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 67

Question 10.
Name a ray.
Type below:
__________

Answer:
Ray K

Explanation:
K is a ray that has one endpoint and continues without an end in one direction.

Question 11.
Name an obtuse angle.
Type below:
__________

Answer:
Angle ABK

Explanation:
ABK is an obtuse angle that is greater than a right angle and less than a straight angle.

Question 12.
Name a line.
Type below:
__________

Answer:
Line AC

Explanation:
AC is a line that is a straight path of points that continues without end in
both directions.

Question 13.
Name a line segment.
Type below:
__________

Answer:
Line Segment PQ

Explanation:
PQ is a line segment that is part of a line between two endpoints.

Question 14.
Name a right angle.
Type below:
__________

Answer:
Angle PRC

Explanation:
PRC is a right angle that forms a square corner.

Question 15.
Name an acute angle.
Type below:
__________

Answer:
Angle ABJ

Explanation:
ABJ is an acute angle that is less than a right angle.

Page No. 552

Use the picture of the bridge for 16 and 17.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 68

Question 16.
Classify ∠A.
_____ angle

Answer:
Right Angle

Explanation:
A is the right angle that forms a square corner.

Question 17.
Which angle appears to be obtuse?
∠ _____

Answer:
∠C

Explanation:
C is an obtuse angle that is greater than a right angle and less than a straight angle.

Question 18.
How many different angles are in Figure X?
List them.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 69
Type below:
__________

Answer:
4 Angles;
Right Angle = Angle EBC;
Obtuse angle = Angle DBF;
Acute angle = Angle DBE;
Straight angle = Angle ABC.

Explanation:

Question 19.
Vanessa drew the angle at the right and named it ∠TRS. Explain why Vanessa’s name for the angle is incorrect. Write a correct name for the angle.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 70
Type below:
__________

Answer:
Vanessa’s name for the angle is incorrect. Because She drew ∠TSR. The two rays R and T have the same endpoint at S called the angle. Also, the TSR is an acute angle that is less than a right angle.

Question 20.
Write the word that describes the part of Figure A.
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 71
Go Math Grade 4 Answer Key Chapter 9 Relate Fractions and Decimals img 72
\(\overline{B G}\) _________
\(\underset { CD }{ \longleftrightarrow } \) _________
∠FBG _________
\(\overrightarrow{B E}\) _________
∠AGD _________

Answer:
\(\overline{B G}\) Line Segment.
\(\underset { CD }{ \longleftrightarrow } \) Line.
∠FBG Right Angle.
\(\overrightarrow{B E}\) Ray.
∠AGD an acute angle.

Conclusion:

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Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers

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Multiply Fractions by Whole Numbers Go Math Grade 4 Chapter 8 Answer Key Pdf

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Lesson 1: Multiples of Unit Fractions

Lesson 2: Multiples of Fractions

Mid-Chapter Checkpoint

Lesson 3: Multiply a Fraction by a Whole Number Using Models

Lesson 4: Multiply a Fraction or Mixed Number by a Whole Number

Lesson 5: Problem Solving • Comparison Problems with Fractions

Review/Test

Common Core – New – Page No. 459

Multiples of Unit Fractions

Write the fraction as a product of a whole number and a unit fraction.

Question 1.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers Common Core - New img 1

Answer:
5 x 1/6

Explanation:
Given that 5/6 or 5 sixth-size parts.
Each sixth-size part of the given fraction can be shown by the unit fraction 1/6.
You can use unit fractions to show 5/6
5/6 = 5 x 1/6.

Question 2.
\(\frac{7}{8}\) =
Type below:
__________

Answer:
7 x 1/8

Explanation:
Given that 7/8 or 7 eighth-size parts.
Each eighth-size part of the given fraction can be shown by the unit fraction 1/8.
You can use unit fractions to show 7/8
7/8 = 7 x 1/8.

Question 3.
\(\frac{5}{3}\) =
Type below:
__________

Answer:
5 x 1/3

Explanation:
Given that 5/3 or 5 third-size parts.
Each third-size part of the given fraction can be shown by the unit fraction 1/3.
You can use unit fractions to show 5/6
5/3 = 5 x 1/3.

Go Math Grade 4 Chapter 8 Lesson 8.1 Answer Key Question 4.
\(\frac{9}{10}\) =
Type below:
__________

Answer:
9 x 1/10

Explanation:
Given that 9/10 or 9-tenth-size parts.
Each tenth-size part of the given fraction can be shown by the unit fraction 1/10.
You can use unit fractions to show 9/10
9/10 = 9 x 1/10.

Question 5.
\(\frac{3}{4}\) =
Type below:
__________

Answer:
3 x 1/4

Explanation:
Given that 3/4 or 3 fourth-size parts.
Each fourth-size part of the given fraction can be shown by the unit fraction 1/4.
You can use unit fractions to show 5/6
3/4 = 3 x 1/4.

Question 6.
\(\frac{11}{12}\) =
Type below:
__________

Answer:
11 x 1/12

Explanation:
Given that 11/12 or 11 twelve-size parts.
Each twelve-size part of the given fraction can be shown by the unit fraction 1/12.
You can use unit fractions to show 5/6
11/12 = 11 x 1/12.

Question 7.
\(\frac{4}{6}\) =
Type below:
__________

Answer:
4 x 1/6

Explanation:
Given that 4/6 or 4 sixth-size parts.
Each sixth-size part of the given fraction can be shown by the unit fraction 1/6.
You can use unit fractions to show 4/6
4/6 = 4 x 1/6.

Question 8.
\(\frac{8}{20}\) =
Type below:
__________

Answer:
8 x 1/20

Explanation:
Given that 8/20 or 8 twenty-size parts.
Each twenty-size part of the given fraction can be shown by the unit fraction 1/20.
You can use unit fractions to show 8/20
8/20 = 8 x 1/20.

Question 9.
\(\frac{13}{100}\) =
Type below:
__________

Answer:
13 x 1/100

Explanation:
Given that 13/100 or 13 hundred-size parts.
Each hundred-size part of the given fraction can be shown by the unit fraction 1/100.
You can use unit fractions to show 13/100
13/100 = 13 x 1/100.

List the next four multiples of the unit fraction.

Question 10.
\(\frac{1}{5}\) ,
Type below:
__________

Answer:
2/5, 3/5, 4/5, 5/5

Explanation:
Grade 4 Chapter 8 Multiply Fractions Image 2
2/5, 3/5, 4/5, 5/5

Question 11.
\(\frac{1}{8}\) ,
Type below:
__________

Answer:
2/8, 3/8, 4/8, 5/8

Explanation:
Grade 4 Chapter 8 Multiply Fractions Image 3
2/8, 3/8, 4/8, 5/8

Problem Solving

Question 12.
So far, Monica has read \(\frac{5}{6}\) of a book. She has read the same number of pages each day for 5 days. What fraction of the book does Monica read each day?
\(\frac{□}{□}\) of the book

Answer:
1/6 of the book

Explanation:
Monica has read 5/6 of a book. She has read the same number of pages each day for 5 days.
For 1 day, she read one page. In total, she read 5 pages in 5 days. So, Monica read 1/6 of a book each day.

Question 13.
Nicholas buys \(\frac{3}{8}\) pound of cheese. He puts the same amount of cheese on 3 sandwiches. How much cheese does Nicholas put on each sandwich?
\(\frac{□}{□}\) pound of cheese

Answer:
1/8 pound of cheese

Explanation:
Nicholas buys 3/8 pound of cheese. He bought 3 sandwiches. Then, he applied 3/8 pound of cheese on 3 sandwiches. So, 3 x 1/8 cheese he put on 3 sandwiches. So, for one sandwich he put 1/8 pound of cheese.

Common Core – New – Page No. 460

Lesson Check

Question 1.
Selena walks from home to school each morning and back home each afternoon. Altogether, she walks \(\frac{2}{3}\) mile each day. How far does Selena live from school?
Options:
a. \(\frac{1}{3}\) mile
b. \(\frac{2}{3}\) mile
c. 1 \(\frac{1}{3}\) mile
d. 2 miles

Answer:
a. \(\frac{1}{3}\) mile

Explanation:
Selena walks from home to school each morning and back home each afternoon. Altogether, she walks 2/3 miles each day. The distance between home and school will remain the same. So, 2/3 x 1/2 = 1/3 mile far Selena live from the school.

Go Math Lesson 8.1 4th Grade Question 2.
Will uses \(\frac{3}{4}\) cup of olive oil to make 3 batches of salad dressing. How much oil does Will use for one batch of salad dressing?
Options:
a. \(\frac{1}{4}\) cup
b. \(\frac{1}{3}\) cup
c. 2 \(\frac{1}{3}\) cups
d. 3 cups

Answer:
1/8 pound of cheesa. \(\frac{1}{4}\) cup

Explanation:
Will uses 34 cups of olive oil to make 3 batches of salad dressing. To know the one batch of salad dressing, we need to take one part of salad dressing = 1/3. So, 3/4 x 1/3 = 1/4 cup of olive oil will use for one batch of salad dressing.

Spiral Review

Question 3.
Liza bought \(\frac{5}{8}\) pound of trail mix. She gives \(\frac{2}{8}\) pound of trail mix to Michael. How much trail mix does Liza have left?
Options:
a. \(\frac{1}{8}\) pound
b. \(\frac{2}{8}\) pound
c. \(\frac{3}{8}\) pound
d. \(\frac{4}{8}\) pound

Answer:
c. \(\frac{3}{8}\) pound

Explanation:
Liza bought 58 pound of trail mix. She gives 28 pound of trail mix to Michael.
So, Liza have left 5/8 – 2/8 = 3/8 trail mix.

Question 4.
Leigh has a piece of rope that is 6 \(\frac{2}{3}\) feet long. How do you write 6 \(\frac{2}{3}\) as a fraction greater than 1?
Options:
a. \(\frac{11}{3}\)
b. \(\frac{15}{3}\)
c. \(\frac{20}{3}\)
d. \(\frac{62}{3}\)

Answer:
c. \(\frac{20}{3}\)

Explanation:
Multiply the denominator with the whole number. i.e Multiply 3 with 6 in the given example, 6 (2/3).
3 x 6 =18.
Add 18 + 2 =20.
Keep the Denominator the same i.e. 3.
The obtained fraction is 20/3.

Question 5.
Randy’s house number is a composite number. Which of the following could be Randy’s house number?
Options:
a. 29
b. 39
c. 59
d. 79

Answer:
b. 39

Explanation:
The composite numbers can be defined as whole numbers that have more than two factors. Whole numbers that are not prime are composite numbers because they are divisible by more than two numbers. 39 is the composite number. 39 is divided by 13 and 3.

Question 6.
Mindy buys 12 cupcakes. Nine of the cupcakes have chocolate frosting and the rest have vanilla frosting. What fraction of the cupcakes have vanilla frosting?
Options:
a. \(\frac{1}{4}\)
b. \(\frac{1}{3}\)
c. \(\frac{2}{3}\)
d. \(\frac{3}{4}\)

Answer:
a. \(\frac{1}{4}\)

Explanation:
Mindy buys 12 cupcakes.
Nine of the cupcakes have chocolate frosting = 9/12.
The rest have vanilla frosting. So, there are 3 cups remaining = 3/12 = 1/4.
1/4 cupcakes have vanilla frosting.

Page No. 463

Question 1.
Write three multiples of \(\frac{3}{8}\).
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 2
1 × \(\frac{3}{8}\) = \(\frac{■}{8}\)
2 × \(\frac{3}{8}\) = \(\frac{■}{8}\)
3 × \(\frac{3}{8}\) = \(\frac{■}{8}\)
Multiples of \(\frac{3}{8}\) are ____ , ____ , and ____ .
Type below:
__________

Answer:
3/8, 6/8, 9/8, 12/8.

Explanation:
1 x 3/8 = 3/8.
2 x 3/8 = 6/8.
3 x 3/8 = 9/8.
4 x 3/8 = 12/8.
Multiples of 3/8 are 3/8, 6/8, 9/8, 12/8.

List the next four multiples of the fraction.

Question 2.
\(\frac{3}{6}\) ,
Type below:
__________

Answer:
6/6, 9/6, 12/6, 20/6

Explanation:
1 x 3/6 = 3/6.
2 x 3/6 = 6/6.
3 x 3/6 = 9/6.
4 x 3/6 = 12/6.
5 x 4/6 = 20/6.
Next four multiples of 3/6 are 6/6, 9/6, 12/6, 20/6.

Question 3.
\(\frac{2}{10}\) ,
Type below:
__________

Answer:
4/10, 6/10, 8/10, 10/10

Explanation:
1 x 2/10 = 2/10.
2 x 2/10 = 4/10.
3 x 2/10 = 6/10.
4 x 2/10 = 8/10.
5 x 2/10 = 10/10.
The next four multiples of 2/10 are 4/10, 6/10, 8/10, 10/10.

Write the product as the product of a whole number and a unit fraction.

Question 4.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 3
3 × \(\frac{3}{4}\) =
Type below:
__________

Answer:
9/4 = 9 x 1/4

Explanation:
1 group of 3/4 = 3/4
2 groups of 3/4 = 6/4
3 groups of 3/4 = 9/4
3 x 3/4 = 9/4.

Question 5.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 4
2 × \(\frac{4}{6}\) =
Type below:
__________

Answer:
8/6 = 8 x 1/6

Explanation:
1 group of 4/6 = 4/6
2 groups of 4/6 = 8/6
2 x 4/6 = 8/6 = 8 x 1/6.

List the next four multiples of the fraction.

Question 6.
\(\frac{4}{5}\) ,
Type below:
__________

Answer:
8/5, 12/5, 16/5, 20/5

Explanation:
1 x 4/5 = 4/5.
2 x 4/5 = 8/5.
3 x 4/5 = 12/5.
4 x 4/5 = 16/5.
5 x 4/5 = 20/5.
The next four multiples of 4/5 are 8/5, 12/5, 16/5, 20/5.

Question 7.
\(\frac{2}{4}\) ,
Type below:
__________

Answer:
4/4, 6/4, 8/4, 10/4

Explanation:
1 x 2/4 = 2/4.
2 x 2/4 = 4/4.
3 x 2/4 = 6/4.
4 x 2/4 = 8/4.
5 x 2/4 = 10/4.
The next four multiples of 2/4 are 4/4, 6/4, 8/4, 10/4.

Write the product as the product of a whole number and a unit fraction.

Question 8.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 5
4 × \(\frac{2}{8}\) =
Type below:
__________

Answer:
8/8 = 8 x 1/8

Explanation:
1 group of 2/8 = 2/8
2 groups of 2/8 = 4/8
3 groups of 2/8 = 6/8
4 groups of 2/8 = 8/8
4 x 2/8 = 8/8 = 8 x 1/8.

Question 9.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 6
3 × \(\frac{3}{5}\) =
Type below:
__________

Answer:
9/5 = 9 x 1/5

Explanation:
1 group of 3/5 = 3/5
2 groups of 3/5 = 6/5
3 groups of 3/5 = 9/5
3 x 3/5 = 9/5 = 9 x 1/5.

Question 10.
Use Repeated Reasoning Are \(\frac{6}{10}\) and \(\frac{6}{30}\) multiples of \(\frac{3}{10}\)?
Explain.
Type below:
__________

Answer:
3/30

Explanation:
Use Repeated Reasoning Are 6/10 and 6/30 multiples of 3/10 and 3/30.

Question 11.
Which is greater, 4 × \(\frac{2}{7}\) or 3 × \(\frac{3}{7}\)? Explain.
4 × \(\frac{2}{7}\) _____ 3 × \(\frac{3}{7}\)

Answer:
4 × \(\frac{2}{7}\) __<___ 3 × \(\frac{3}{7}\)

Explanation:
8/7 < 9/7
So, 4 x 2/7 < 3 x 3/7

Page No. 464

Question 12.
Josh is watering his plants. He gives each of 2 plants \(\frac{3}{5}\) pint of water. His watering can holds \(\frac{1}{5}\) pint. How many times will he fill his watering can to water both plants?
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 7
a. What do you need to find?
Type below:
__________

Answer:
We need to find how many times Josh needs to fill his watering can to water both plants.

Question 12.
b. What information do you need to use?
Type below:
__________

Answer:
Use the Number of plants = 2.
He gives each plant a 3/5 pint of water.
His watering can hold 1/5 pint.

Question 12.
c. How can drawing a model help you solve the problem?
Type below:
__________

Answer:
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 6

Question 12.
d. Show the steps you use to solve the problem.
Type below:
__________

Answer:
If Josh gives each plant 3/5 pint, then that’s a total of 6/5 pint.
6/5 = 6 x 1/5.

Question 12.
e. Complete the sentence. Josh will fill his watering can ____ times.
____ times

Answer:
Josh will fill his watering can 6 times.

Go Math 4th Grade Pdf Practice and Homework Lesson 8.2 Question 13.
Alma is making 3 batches of tortillas. She adds \(\frac{3}{4}\) cup of water to each batch. The measuring cup holds \(\frac{1}{4}\) cup. How many times must Alma measure \(\frac{1}{4}\) cup of water to have enough for the tortillas? Shade the model to show your answer.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 8
Alma must measure \(\frac{1}{4}\) cup ______ times.
____ times

Answer:
12 times

Explanation:
Alma is making 3 batches of tortillas. She adds a 3/4 cup of water to each batch. The measuring cup holds 1/4 cup.
Alma must measure 1/4 cup 12 times.

Common Core – New – Page No. 465

Multiples of Fractions

List the next four multiples of the fraction.

Question 1.
\(\frac{3}{5}\) ,
Type below:
__________

Answer:
6/5, 9/5, 12/5, 20/5

Explanation:
1 x 3/5 = 3/5.
2 x 3/5 = 6/5.
3 x 3/5 = 9/5.
4 x 3/5 = 12/5.
5 x 4/5 = 20/5.
The next four multiples of 3/5 are 6/5, 9/5, 12/5, 20/5.

Question 2.
\(\frac{2}{6}\) ,
Type below:
__________

Answer:
4/6, 6/6, 8/6, 10/6

Explanation:
1 x 2/6 = 2/6.
2 x 2/6 = 4/6.
3 x 2/6 = 6/6.
4 x 2/6 = 8/6.
5 x 2/6 = 10/6.
The next four multiples of 2/6 are 4/6, 6/6, 8/6, 10/6.

Question 3.
\(\frac{4}{8}\) ,
Type below:
__________

Answer:
8/8, 12/8, 16/8, 20/8

Explanation:
1 x 4/8 = 4/8.
2 x 4/8 = 8/8.
3 x 4/8 = 12/8.
4 x 4/8 = 16/8.
5 x 4/8 = 20/8.
The next four multiples of 4/8 are 8/8, 12/8, 16/8, 20/8.

Question 4.
\(\frac{5}{10}\) ,
Type below:
__________

Answer:
10/10, 15/10, 20/10, 25/10

Explanation:
1 x 5/10 = 5/10.
2 x 5/10 = 10/10.
3 x 5/10 = 15/10.
4 x 5/10 = 20/10.
5 x 5/10 = 25/10.
The next four multiples of 5/10 are 10/10, 15/10, 20/10, 25/10.

Write the product as the product of a whole number and a unit fraction.

Question 5.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers Common Core - New img 9
2 × \(\frac{4}{5}\) =
Type below:
__________

Answer:
8/5 = 8 x 1/5

Explanation:
1 group of 4/5 = 4/5
2 groups of 4/5 = 8/5
2 x 4/5 = 8/5 = 8 x 1/5.

Question 6.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers Common Core - New img 10
5 × \(\frac{2}{3}\) =
Type below:
__________

Answer:
10/3 = 10 x 1/3

Explanation:
1 group of 2/3 = 2/3
2 group of 2/3 = 4/3
3 group of 2/3 = 6/3
4 group of 2/3 = 8/3
5 group of 2/3 = 10/3
5 x 2/3 = 10/3 = 10 x 1/3.

Problem Solving

Question 7.
Jessica is making 2 loaves of banana bread. She needs \(\frac{3}{4}\) cup of sugar for each loaf. Her measuring cup can only hold \(\frac{1}{4}\) cup of sugar. How many times will Jessica need to fill the measuring cup in order to get enough sugar for both loaves of bread?
_____ times

Answer:
6 times

Explanation:
Jessica is making 2 loaves of banana bread. She needs a 3/4 cup of sugar for each loaf.
For 2 loaves, she needs 2 x 3/4 = 6/4 cups of sugar.
Her measuring cup can only hold 1/4 cup of sugar. So, to get the 3/4 cup of sugar, she needs to fill the cup 3 times. 1/4 + 1/4 + 1/4 = 3/4.
So, to fill 2 loaves, she needs to fill cup 3 x 2 = 6 times.

Question 8.
A group of four students is performing an experiment with salt. Each student must add \(\frac{3}{8}\) teaspoon of salt to a solution. The group only has a \(\frac{1}{8}\) teaspoon measuring spoon. How many times will the group need to fill the measuring spoon in order to perform the experiment?
_____ times

Answer:
12 times

Explanation:
A group of four students is performing an experiment with salt. Each student must add a 3/8 teaspoon of salt to a solution. 4 x 3/8 = 12/8 teaspoon of salt required to finish the experiment.
If they have 1/8 teaspoon measuring spoon, 12 x 1/8.
So, the group needs to fill the measuring spoon 12 times in order to perform the experiment.

Common Core – New – Page No. 466

Lesson Check

Question 1.
Eloise made a list of some multiples of \(\frac{5}{8}\). Which of the following lists could be Eloise’s list?
Options:
a. \(\frac{5}{8}, \frac{10}{16}, \frac{15}{24}, \frac{20}{32}, \frac{25}{40}\)
b. \(\frac{5}{8}, \frac{10}{8}, \frac{15}{8}, \frac{20}{8}, \frac{25}{8}\)
c. \(\frac{5}{8}, \frac{6}{8}, \frac{7}{8}, \frac{8}{8}, \frac{9}{8}\)
d. \(\frac{1}{8}, \frac{2}{8}, \frac{3}{8}, \frac{4}{8}, \frac{5}{8}\)

Answer:
b. \(\frac{5}{8}, \frac{10}{8}, \frac{15}{8}, \frac{20}{8}, \frac{25}{8}\)

Explanation:
1 x 5/8 = 5/8.
2 x 5/8 = 10/8.
3 x 5/8 = 15/8.
4 x 5/8 = 20/8.
5 x 5/8 = 25/8.
The next four multiples of 5/8 are 10/8, 15/8, 20/8, 25/8.

Go Math Workbook Grade 4 Pdf Multiples of Fractions Lesson 8.2 Question 2.
David is filling five \(\frac{3}{4}\) quart bottles with a sports drink. His measuring cup only holds \(\frac{1}{4}\) quart. How many times will David need to fill the measuring cup in order to fill the 5 bottles?
Options:
a. 5
b. 10
c. 15
d. 20

Answer:
c. 15

Explanation:
David is filling five 3/4 quart bottles with a sports drink = 5 x 3/4 = 15/4.
His measuring cup only holds 1/4 quart.
So, 15 x 1/4. David needs to fill the measuring cup 15 times in order to fill the 5 bottles.

Spiral Review

Question 3.
Ira has 128 stamps in his stamp album. He has the same number of stamps on each of the 8 pages. How many stamps are on each page?
Options:
a. 12
b. 14
c. 16
d. 18

Answer:
c. 16

Explanation:
Ira has 128 stamps in his stamp album. He has the same number of stamps on each of the 8 pages.
128/8 = 16 stamps on each page.

Question 4.
Ryan is saving up for a bike that costs $198. So far, he has saved $15 per week for the last 12 weeks. How much more money does Ryan need in order to be able to buy the bike?
Options:
a. $ 8
b. $ 18
c. $ 48
d. $ 180

Answer:
b. $ 18

Explanation:
Ryan is saving up for a bike that costs $198.
So far, he has saved $15 per week for the last 12 weeks = $15 x 12 = $180.
$198 – $180 = $18 needed in order to buy the bike.

Question 5.
Tina buys 3 \(\frac{7}{8}\) yards of material at the fabric store. She uses it to make a skirt. Afterward, she has 1 \(\frac{3}{8}\) yards of the fabric left over. How many yards of material did Tina use?
Options:
a. 1 \(\frac{4}{8}\)
b. 2 \(\frac{1}{8}\)
c. 2 \(\frac{4}{8}\)
d. 5 \(\frac{2}{8}\)

Answer:
c. 2 \(\frac{4}{8}\)

Explanation:
Tina buys 3 7/8 yards of material at the fabric store. She uses it to make a skirt. Afterward, she has 1 3/8 yards of the fabric left over.
3 -1 = 2; 7/8 – 3/8 = 4/8. So, the answer is 2 4/8.

Question 6.
Which list shows the fractions in order from least to greatest?
Options:
a. \(\frac{2}{3}, \frac{3}{4}, \frac{7}{12}\)
b. \(\frac{7}{12}, \frac{3}{4}, \frac{2}{3}\)
c. \(\frac{3}{4}, \frac{2}{3}, \frac{7}{12}\)
d. \(\frac{7}{12}, \frac{2}{3}, \frac{3}{4}\)

Answer:
d. \(\frac{7}{12}, \frac{2}{3}, \frac{3}{4}\)

Explanation:
2/3 = 0.666
3/4 = 0.75
7/12 = 0.5833
7/12, 2/3, 3/4

Page No. 467

Choose the best term from the box.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 11

Question 1.
A __________ of a number is the product of the number and a counting number.
__________

Answer:
Multiple

Question 2.
A _________ always has a numerator of 1.
_________

Answer:
Unit Fraction

List the next four multiples of the unit fraction.

Question 3.
\(\frac{1}{2}\) ,
Type below:
_________

Answer:
2/2, 3/2, 4/2, 5/2

Explanation:
1 x 1/2 = 1/2.
2 x 1/2 = 2/2.
3 x 1/2 = 3/2.
4 x 1/2 = 4/2.
5 x 1/2 = 5/2.
The next four multiples of 1/2 are 2/2, 3/2, 4/2, 5/2.

Question 4.
\(\frac{1}{5}\) ,
Type below:
_________

Answer:
2/5, 3/5, 4/5, 5/5

Explanation:
1 x 1/5 = 1/5.
2 x 1/5 = 2/5.
3 x 1/5 = 3/5.
4 x 1/5 = 4/5.
5 x 1/5 = 5/5.
The next four multiples of 1/5 are 2/5, 3/5, 4/5, 5/5.

Write the fraction as a product of a whole number and a unit fraction.

Question 5.
\(\frac{4}{10}\) = _____ × \(\frac{1}{10}\)

Answer:
4

Explanation:
4/10 = 4 x 1/10

Question 6.
\(\frac{8}{12}\) = _____ × \(\frac{1}{12}\)

Answer:
8

Explanation:
8/12 = 8 x 1/12

Question 7.
\(\frac{3}{4}\) = _____ × \(\frac{1}{4}\)

Answer:
3

Explanation:
3/4 = 3 x 1/4

List the next four multiples of the fraction.

Question 8.
\(\frac{2}{5}\) ,
Type below:
_________

Answer:
4/5, 6/5, 8/5, 10/5

Explanation:
1 x 2/5 = 1/5.
2 x 2/5 = 4/5.
3 x 2/5 = 6/5.
4 x 2/5 = 8/5.
5 x 2/5 = 10/5.
The next four multiples of 1/5 are 4/5, 6/5, 8/5, 10/5.

Question 9.
\(\frac{5}{6}\) ,
Type below:
_________

Answer:
10/6, 15/6, 20/6, 25/6

Explanation:
1 x 5/6 = 5/6.
2 x 5/6 = 10/6.
3 x 5/6 = 15/6.
4 x 5/6 = 20/6.
5 x 5/6 = 25/6.
The next four multiples of 5/6 are 10/6, 15/6, 20/6, 25/6.

Write the product as the product of a whole number and a unit fraction.

Question 10.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 12
4 × \(\frac{2}{6}\) =
Type below:
_________

Answer:
8/6 = 8 x 1/6

Explanation:
1 group of 2/6 = 2/6
2 groups of 2/6 = 4/6
3 groups of 2/6 = 6/6
4 groups of 2/6 = 8/6
4 x 2/6 = 8/6 = 8 x 1/6.

Question 11.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 13
3 × \(\frac{3}{8}\) =
Type below:
_________

Answer:
9/8 = 9 x 1/8

Explanation:
1 group of 3/8 = 3/8
2 groups of 3/8 = 6/8
3 groups of 3/8 = 9/8
3 x 3/8 = 9/8 = 9 x 1/8.

Page No. 468

Question 12.
Pedro cut a sheet of poster board into 10 equal parts. His brother used some of the poster board and now \(\frac{8}{10}\) is left. Pedro wants to make a sign from each remaining part of the poster board. How many signs can he make?
______ signs

Answer:
8 signs

Explanation:
Pedro cut a sheet of poster board into 10 equal parts.
His brother uses some of the poster board and now an 8/10 is left.
So, the remaining part of the b\poster board is 8/10 parts.
Pedro can use 8/ 10 parts of the board to make signs.
So, he can make 8 signs.

Question 13.
Ella is making 3 batches of banana milkshakes. She needs \(\frac{3}{4}\) gallon of milk for each batch. Her measuring cup holds \(\frac{1}{4}\) gallon. How many times will she need to fill the measuring cup to make all 3 batches of milkshakes?
______ times

Answer:
9 times

Explanation:
Ella is making 3 batches of banana milkshakes. She needs 3/4 gallon of milk for each batch. So, she needs 3 x 3/4 = 9/4 cups for 3 batches of banana milkshakes. Her measuring cup holds 1/4 gallon.
9/4 = 9 x 1/4.
So, Ella needs to fill the measuring cup 9 times to make all 3 batches of milkshakes.

Question 14.
Darren cut a lemon pie into 8 equal slices. His friends ate some of the pie and now \(\frac{5}{8}\) is left. Darren wants to put each slice of the leftover pie on its own plate. What part of the pie will he put on each plate?
\(\frac{□}{□}\) of the pie on each plate.

Answer:
5/8 of the pie on each plate

Explanation:
Darren cut a lemon pie into 8 equal slices. His friends ate some of the pie and now 5/8 is left. So, 5 pie slices leftover.
Darren can put 5/8 parts of the pie on each plate.

Question 15.
Beth is putting liquid fertilizer on the plants in 4 flowerpots. Her measuring spoon holds \(\frac{1}{8}\) teaspoon. The directions say to put \(\frac{5}{8}\) teaspoon of fertilizer in each pot. How many times will Beth need to fill the measuring spoon to fertilize the plants in the 4 pots?
______ times

Answer:
20 times

Explanation:
Beth is putting liquid fertilizer on the plants in 4 flowerpots. Her measuring spoon holds 1/8 teaspoon.
The directions say to put 5/8 teaspoons of fertilizer in each pot. So, 4 x 5/8 = 20/8.
20/8 = 20 x 1/8. Beth needs to fill the measuring spoon 20 times to fertilize the plants in the 4 pots.

Page No. 471

Question 1.
Find the product of 3 × \(\frac{5}{8}\).
1 group of \(\frac{5}{8}\) = \(\frac{□}{8}\)
2 groups of \(\frac{5}{8}\) = \(\frac{□}{8}\)
3 groups of \(\frac{5}{8}\) = \(\frac{□}{8}\)
3 × \(\frac{5}{8}\) = \(\frac{□}{□}\)

Answer:
15/8

Explanation:
1 group of 5/8 = 2/8
2 groups of 5/8 = 4/8
3 groups of 5/8 = 6/8
3 x 5/8 = 15/8.

Multiply.

Question 2.
2 × \(\frac{4}{5}\) = \(\frac{□}{□}\)

Answer:
8/5

Explanation:
1 group of 4/5 = 4/5
2 groups of 4/5 = 8/5
2 x 4/5 = 8/5.

Question 3.
4 × \(\frac{2}{3}\) = \(\frac{□}{□}\)

Answer:
8/3

Explanation:
1 group of 2/3 = 2/3
2 groups of 2/3 = 4/3
3 groups of 2/3 = 6/3
4 groups of 2/3 = 8/3
4 x 2/3 = 8/3

Question 4.
5 × \(\frac{3}{10}\) = \(\frac{□}{□}\)

Answer:
15/10

Explanation:
1 group of 3/10 = 3/10
2 groups of 3/10 = 6/10
3 groups of 3/10 = 9/10
4 groups of 3/10 = 12/10
5 groups of 3/10 = 15/10
5 x 3/10 = 15/10

Question 5.
4 × \(\frac{5}{6}\) = \(\frac{□}{□}\)

Answer:
20/6

Explanation:
1 group of 5/6 = 5/6
2 groups of 5/6 = 10/6
3 groups of 5/6 = 15/6
4 groups of 5/6 = 20/6
4 x 5/6 = 20/6

Multiply.

Question 6.
2 × \(\frac{7}{12}\) = \(\frac{□}{□}\)

Answer:
7/6

Explanation:
1 group of 7/12 = 7/12
2 groups of 7/12 = 14/12
2 x 7/12 = 14/12 = 7/6

Question 7.
6 × \(\frac{3}{8}\) = \(\frac{□}{□}\)

Answer:
9/4

Explanation:
1 group of 3/8 = 3/8
2 groups of 3/8 = 6/8
3 groups of 3/8 = 9/8
4 groups of 3/8 = 12/8
5 groups of 3/8 = 15/8
6 groups of 3/8 = 18/8
6 x 3/8 = 18/8 = 9/4

Question 8.
5 × \(\frac{2}{4}\) = \(\frac{□}{□}\)

Answer:
5/2

Explanation:
1 group of 2/4 = 2/4
2 groups of 2/4 = 4/4
3 groups of 2/4 = 6/4
4 groups of 2/4 = 8/4
5 groups of 2/4 = 10/4
5 x 2/4 = 10/4 = 5/2

Question 9.
3 × \(\frac{4}{6}\) = \(\frac{□}{□}\)

Answer:
2

Explanation:
1 group of 4/6 = 4/6
2 groups of 4/6 = 8/6
3 groups of 4/6 = 12/6
3 x 4/6 = 12/6 = 2

Question 10.
2 × \(\frac{5}{10}\) = \(\frac{□}{□}\)

Answer:
2

Explanation:
1 group of 5/10 = 5/10
2 groups of 5/10 = 10/10
2 x 10/10 = 2 x 1 = 2

Question 11.
4 × \(\frac{2}{8}\) = \(\frac{□}{□}\)

Answer:
1

Explanation:
1 group of 2/8 = 2/8
2 groups of 2/8 = 4/8
3 groups of 2/8 = 6/8
4 groups of 2/8 = 8/8
4 x 2/8 = 8/8 = 1

Look for a Pattern Algebra Write the unknown number.

Question 12.
□ × \(\frac{2}{3}\) = \(\frac{12}{3}\)
□ = ____

Answer:
6

Explanation:
Let the unknown number is s.
s x 2/3 = 12/3
s = 12/3 x 3/2 = 6.

Question 13.
5 × \(\frac{□}{4}\) = \(\frac{10}{4}\)
□ = ____

Answer:
2

Explanation:
Let the unknown number is s.
5 x s/4 = 10/4
5/4 x s = 10/4
s = 10/4 x 4/5 =2.

Question 14.
2 × \(\frac{7}{□}\) = \(\frac{14}{8}\)
□ = ____

Answer:
8

Explanation:
Let the unknown number is s.
2 x 7/s = 14/8
14/s = 14/8
s x 14/8 = 14
s = 14 x 8/14
s = 8.

Page No. 472

Question 15.
Lisa makes clothes for pets. She needs \(\frac{5}{6}\) yard of fabric to make 1 dog coat. How much fabric does she need to make 3 dog coats?
a. What do you need to find?
Type below:
_________

Answer:
The number of fabric yards required for 3 dog coats

Question 15.
b. What information do you need?
Type below:
_________

Answer:
How much she needs of fabric for 1 dog coat can help to find 3 dog coats.

Question 15.
c. Show the steps you use to solve the problem.
Type below:
_________

Answer:
Lisa makes clothes for pets. She needs a 5/6 yard of fabric to make 1 dog coat.
For 3 dogs = 5/6 x 3 =5/2

Question 15.
d. Complete the sentence.
Lisa needs _____ yards of fabric to make 3 dog coats.
\(\frac{□}{□}\)

Answer:
Lisa needs a 5/2 yard of fabric to make 3 dog coats.

Go Math Grade 4 Chapter 8 Answer Key Pdf Question 16.
Manuel’s small dog eats \(\frac{2}{4}\) bag of dog food in 1 month. His large dog eats \(\frac{3}{4}\) bag of dog food in 1 month. How many bags do both dogs eat in 6 months?
\(\frac{□}{□}\) bags

Answer:
2 bags

Explanation:
Manuel’s small dog eats a 2/4 bag of dog food in 1 month. His large dog eats a 3/4 bag of dog food in 1 month.
In total 2/4 + 3/4 = 5/4 bag of dog food eaten in 1 month.
So, for 6 months = 6 x 5/4 = 30/4 = 15/2.
So, 2 bags are needed for 6 months.

Question 17.
Select the correct product for the equation.
9 × \(\frac{2}{12}\) = □
3 × \(\frac{6}{7}\) = □
6 × \(\frac{4}{7}\) = □
8 × \(\frac{3}{12}\) = □
Type below:
_________

Answer:
8 × \(\frac{3}{12}\) = 2

Explanation:
9 × \(\frac{2}{12}\) = 3/2
3 × \(\frac{6}{7}\) = 18/7
6 × \(\frac{4}{7}\) = 24/7
8 × \(\frac{3}{12}\) = 2

Common Core – New – Page No. 473

Multiply a Fraction by a Whole Number Using Models

Multiply.

Question 1.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers Common Core - New img 14

Answer:
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers Common Core - New img 14

Question 2.
3 × \(\frac{2}{5}\) = \(\frac{□}{□}\)

Answer:
Grade 4 Chapter 8 Image 1 473
3 x 2/5 = 6/5

Question 3.
7 × \(\frac{3}{10}\) = \(\frac{□}{□}\)

Answer:
Grade 4 Chapter 8 Image 2 473
7 x 3/10 = 21/10

Question 4.
3 × \(\frac{5}{12}\) = \(\frac{□}{□}\)

Answer:
Grade 4 Chapter 8 Image 3 473
3 x 5/12 = 15/12

Question 5.
6 × \(\frac{3}{4}\) = \(\frac{□}{□}\)

Answer:
Grade 4 Chapter 8 Image 4 473
6 x 3/4 = 18/4

Question 6.
4 × \(\frac{2}{8}\) = \(\frac{□}{□}\)

Answer:
Grade 4 Chapter 8 Image 5 473
4 x 2/8 = 8/8

Question 7.
5 × \(\frac{2}{3}\) = \(\frac{□}{□}\)

Answer:
Grade 4 Chapter 8 Image 6 473
5 x 2/3 = 10/3

Question 8.
2 × \(\frac{7}{8}\) = \(\frac{□}{□}\)

Answer:
Grade 4 Chapter 8 Image 7 473
2 x 7/8 = 14/8

Question 9.
6 × \(\frac{4}{5}\) = \(\frac{□}{□}\)

Answer:
Grade 4 Chapter 8 Image 8 473
6 x 4/5 = 28/5

Problem Solving

Question 10.
Matthew walks \(\frac{5}{8}\) mile to the bus stop each morning. How far will he walk in 5 days?
\(\frac{□}{□}\)

Answer:
25/8 miles

Explanation:
Matthew walks 5/8 mile to the bus stop each morning.
In 5 days, 5 x 5/8 = 25/8 miles.

Question 11.
Emily uses \(\frac{2}{3}\) cup of milk to make one batch of muffins. How many cups of milk will Emily use if she makes 3 batches of muffins?
\(\frac{□}{□}\)

Answer:
6/3 cups of milk

Explanation:
Emily uses a 2/3 cup of milk to make one batch of muffins.
Emily use 3 x 2/3 = 6/3 cups of milk to make 3 batches of muffins

Common Core – New – Page No. 474

Lesson Check

Question 1.
Aleta’s puppy gained \(\frac{3}{8}\) pound each week for 4 weeks. Altogether, how much weight did the puppy gain during the 4 weeks?
Options:
a. \(\frac{8}{12}\) pound
b. 1 \(\frac{2}{8}\) pounds
c. \(\frac{12}{8}\) pounds
d. 4 \(\frac{3}{8}\) pounds

Answer:
6/3 cups of milk

Explanation:
Aleta’s puppy gained 3/8 pound each week.
It gained 4 x 3/8 = 12/8 pounds in 4 weeks.

Question 2.
Pedro mixes \(\frac{3}{4}\) teaspoon of plant food into each gallon of water. How many teaspoons of plant food should Pedro mix into 5 gallons of water?
Options:
a. \(\frac{3}{20}\) teaspoon
b. \(\frac{4}{15}\) teaspoon
c. \(\frac{8}{4}\) teaspoons
d. \(\frac{15}{4}\) teaspoons

Answer:
d. \(\frac{15}{4}\) teaspoons

Explanation:
If Pedro mixes 3/4 teaspoon of plant food into each gallon of water, then 5 x 3/4 = 15/4 teaspoon of plant food mix into 5 gallons of water.

Spiral Review

Question 3.
Ivana has \(\frac{3}{4}\) pound of hamburger meat. She makes 3 hamburger patties. Each patty weighs the same amount. How much does each hamburger patty weigh?
Options:
a. \(\frac{1}{4}\) pound
b. \(\frac{1}{3}\) pound
c. 2 \(\frac{1}{4}\) pounds
d. 3 pounds

Answer:
a. \(\frac{1}{4}\) pound

Explanation:
Ivana has 3/4 pound of hamburger meat. She makes 3 hamburger patties.
Each patty weighs the same amount. So, each hamburger patty weight 1/4 pound.

Question 4.
Which of the following expressions is NOT equal to \(\frac{7}{10}\)?
Options:
a. \(\frac{5}{10}+\frac{1}{10}+\frac{1}{10}\)
b. \(\frac{2}{10}+\frac{2}{10}+\frac{3}{10}\)
c. \(\frac{3}{10}+\frac{3}{10}+\frac{2}{10}\)
d. \(\frac{4}{10}+\frac{2}{10}+\frac{1}{10}\)

Answer:
c. \(\frac{3}{10}+\frac{3}{10}+\frac{2}{10}\)

Explanation:
a. \(\frac{5}{10}+\frac{1}{10}+\frac{1}{10}\) = 7/10
b. \(\frac{2}{10}+\frac{2}{10}+\frac{3}{10}\) = 7/10
c. \(\frac{3}{10}+\frac{3}{10}+\frac{2}{10}\) = 8/10
d. \(\frac{4}{10}+\frac{2}{10}+\frac{1}{10}\) = 7/10

Question 5.
Lance wants to find the total length of 3 boards. He uses the expression 3 \(\frac{1}{2}\) + (2 + 4 \(\frac{1}{2}\)). How can Lance rewrite the expression using both the Associative and Commutative Properties of Addition?
Options:
a. 5 + 4 \(\frac{1}{2}\)
b. (3 \(\frac{1}{2}\) + 2) + 4 \(\frac{1}{2}\)
c. 2 + (3 \(\frac{1}{2}\) + 4 \(\frac{1}{2}\))
d. 3 \(\frac{1}{2}\) + (4 \(\frac{1}{2}\) + 2)

Answer:
She can write as (3 \(\frac{1}{2}\) + 2) + 4 \(\frac{1}{2}\)

Question 6.
Which of the following statements is true?
Options:
a. \(\frac{5}{8}>\frac{9}{10}\)
b. \(\frac{5}{12}>\frac{1}{3}\)
c. \(\frac{3}{6}>\frac{4}{5}\)
d. \(\frac{1}{2}>\frac{3}{4}\)

Answer:
6/3 cups of milk

Explanation:
0.625 > 0.9
0.416 > 0.333
0.5 > 0.8
0.5 > 0.75

Page No. 477

Question 1.
2 × 3 \(\frac{2}{3}\) = □
_____ \(\frac{□}{□}\)

Answer:
7\(\frac{1}{3}\)

Explanation:
3 \(\frac{2}{3}\) = 11/3
2 x 11/3 = 22/3
22/3 = 7 and remainder 1. So, 22/3 = 7 (1/3)

Multiply. Write the product as a mixed number.

Question 2.
6 × \(\frac{2}{5}\) = _____ \(\frac{□}{□}\)

Answer:
2\(\frac{2}{5}\)

Explanation:
6 × \(\frac{2}{5}\) = 12/5. 12/5 = 2 and remainder. So, 12/5 = 2 2/5

Question 3.
3 × 2 \(\frac{3}{4}\) = _____ \(\frac{□}{□}\)

Answer:
8\(\frac{1}{4}\)

Explanation:
2 \(\frac{3}{4}\) = 11/4
3 x 11/4 = 33/4. 33/4 = 8 and the remainder 1. So, 33/4 = 8 1/4

Go Math 4th Grade Lesson 8.4 Homework Answer Key Question 4.
4 × 1 \(\frac{5}{6}\) = _____ \(\frac{□}{□}\)

Answer:
7 \(\frac{2}{6}\)

Explanation:
1 \(\frac{5}{6}\) = 11/6
4 x 11/6 = 44/6. 44/6 = 7 and the remainder 2. So, 44/6 = 7 2/6

Question 5.
4 × \(\frac{5}{8}\) = _____ \(\frac{□}{□}\)

Answer:
2\(\frac{1}{2}\)

Explanation:
4 × \(\frac{5}{8}\) = 5/2. 5/2 = 2 and remainder 1. So, 5/2 = 2 1/2

Question 6.
6 × \(\frac{5}{12}\) = _____ \(\frac{□}{□}\)

Answer:
2\(\frac{1}{2}\)

Explanation:
6 × \(\frac{5}{12}\) = 5/2. 5/2 = 2 and remainder 1. So, 5/2 = 2 1/2

Question 7.
3 × 3 \(\frac{1}{2}\) = _____ \(\frac{□}{□}\)

Answer:
10 \(\frac{1}{2}\)

Explanation:
3 \(\frac{1}{2}\) = 7/2
3 x 7/2 = 21/2. 21/2 = 10 and remainder 1. So, 21/2 = 10 1/2

Question 8.
2 × 2 \(\frac{2}{3}\) = _____ \(\frac{□}{□}\)

Answer:
5\(\frac{1}{3}\)

Explanation:
2 \(\frac{2}{3}\) = 8/3
2 x 8/3 = 16/3. 16/3 = 5 and remainder 1. So, 16/3 = 5 1/3

Question 9.
5 × 1 \(\frac{2}{4}\) = _____ \(\frac{□}{□}\)

Answer:
7 \(\frac{1}{2}\)

Explanation:
1 \(\frac{2}{4}\) = 6/4
5 x 6/4 = 30/4 = 15/2. 15/2 = 7 and remainder 1. So, 15/2 = 7 1/2

Question 10.
4 × 2 \(\frac{2}{5}\) = _____ \(\frac{□}{□}\)

Answer:
9\(\frac{3}{5}\)

Explanation:
2 \(\frac{2}{5}\) = 12/5
4 x 12/5 = 48/5. 48/5 = 9 and remainder 3. So, 48/5 = 9 3/5

Look for a Pattern Algebra Write the unknown number.

Question 11.
□ × 2 \(\frac{1}{3}\) = 9 \(\frac{1}{3}\)
□ = ______

Answer:
4

Explanation:
2 \(\frac{1}{3}\) = 7/3
9 \(\frac{1}{3}\) = 28/3
Let the unknown numer s.
s x 7/3 = 28/3
s = 4

Question 12.
3 × 2 \(\frac{2}{□}\) = 7 \(\frac{2}{4}\)
□ = ______

Answer:
4

Explanation:
7 \(\frac{2}{4}\) = 30/4
Let the unknown number s. If s is 4, 3 × 2 \(\frac{2}{4}\) = 3 x 10/4 = 30/4.
So, the unknown number is 4.

Question 13.
3 × □ \(\frac{3}{8}\) = 4 \(\frac{1}{8}\)
□ = ______

Answer:
1

Explanation:
4 \(\frac{1}{8}\) = 33/8
Let the unknown number is s. If s is 1, 3 × 1 \(\frac{3}{8}\) = 3 x 11/8 = 33/8.

Question 14.
Describe two different ways to write \(\frac{7}{3}\) as a mixed number.
Type below:
_________

Answer:
One is 2\(\frac{1}{3}\)
Another one is 2 + 1/3

Explanation:
7/3 = 2 and the remainder is 1. So, 2 1/3 is one mixed fraction.
Seond method is 3/3 + 3/3 + 1/3 = 2 + 1/3.

Page No. 478

Use the recipe for 15–18.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 15

Question 15.
Otis plans to make 3 batches of sidewalk chalk. How much plaster of Paris does he need?
______ \(\frac{□}{□}\) cups plaster of Paris

Answer:
4\(\frac{1}{2}\) cups plaster of Paris

Explanation:
1\(\frac{1}{2}\) = 3/2 + 3/2 + 3/2 = 9/2
9/2 = 4, the remainder is 1. So, 4 1/2 cups plaster of Paris need for 3 batches of sidewalk chalk.

Question 16.
What’s the Question? The answer is \(\frac{32}{3}\).
Type below:
_________

Answer:
How many tablespoons of powdered paint are needed for 4 batches of chalk?

Question 17.
Patty has 2 cups of warm water. Is that enough water to make 4 batches of sidewalk chalk? Explain how you know without finding the exact product.
______

Answer:
No. 4 x 1/2 = 2 and also 3/4 is greater than 1/2. So, 4 x 3/4 is greater than 2.

Go Math Lesson 8.4 4th Grade Question 18.
Rita makes sidewalk chalk 2 days a week. Each of those days, she spends 1 \(\frac{1}{4}\) hours making the chalk. How much time does Rita spend making sidewalk chalk in 3 weeks?
______ \(\frac{□}{□}\) hours

Answer:
7\(\frac{1}{2}\) hours

Explanation:
Rita makes sidewalk chalk 2 days a week. Each of those days, she spends 1 1/4 hours making the chalk.
1 week = 2 x 5/4 = 10/4 = 5/2.
3 weeks = 3 x 5/2 = 15/2 = 7 1/2.

Question 19.
Oliver has music lessons Monday, Wednesday, and Friday. Each lesson is \(\frac{3}{4}\) of an hour. Oliver says he will have lessons for 3 \(\frac{1}{2}\) hours this week. Without multiplying, explain how you know Oliver is incorrect.
Type below:
__________

Answer:
3/4 is less than 1, and 1 × 3 = 3. So 3/4 × 3 will also be less than 3.
Oliver’s answer, 3 1/2 is greater than 3, so it is incorrect.

Common Core – New – Page No. 479

Multiply a Fraction or Mixed Number by a Whole Number.

Multiply. Write the product as a mixed number.

Question 1.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers Common Core - New img 16

Answer:
1\(\frac{5}{10}\)

Explanation:
5 x 3/10 = 15/10 = 1 and remainder is 5. So, the mixed fraction is 1 5/10

Question 2.
3 × \(\frac{3}{5}\) =
______ \(\frac{□}{□}\)

Answer:
1\(\frac{4}{5}\)

Explanation:
3 x 3/5 = 9/5 = 1 and remainder is 4. So, the mixed fraction is 1 4/5

Question 3.
5 × \(\frac{3}{4}\) =
______ \(\frac{□}{□}\)

Answer:
3\(\frac{3}{4}\)

Explanation:
15/4 = 3 and remainder is 3. So, the mixed fraction is 3 3/4

Question 4.
4 × 1 \(\frac{1}{5}\) =
______ \(\frac{□}{□}\)

Answer:
4\(\frac{4}{5}\)

Explanation:
1 \(\frac{1}{5}\) = 6/5.
4 x 6/5 = 24/5 = 4 and the remainder is 4. So, the mixed fraction is 4 4/5

Question 5.
2 × 2 \(\frac{1}{3}\) =
______ \(\frac{□}{□}\)

Answer:
4\(\frac{2}{3}\)

Explanation:
2 \(\frac{1}{3}\) = 7/3.
2 x 7/3 = 14/3.
14/3 = 4 and the remainder is 2. So, the mixed fraction is 4 2/3

Question 6.
5 × 1 \(\frac{1}{6}\) =
______ \(\frac{□}{□}\)

Answer:
5\(\frac{5}{6}\)

Explanation:
1 \(\frac{1}{6}\) = 7/6
5 x 7/6 = 35/6.
35/6 = 5 and the remainder is 5. So, the mixed fraction is 5 5/6

Question 7.
2 × 2 \(\frac{7}{8}\) =
______ \(\frac{□}{□}\)

Answer:
6\(\frac{1}{1}\)

Explanation:
2 \(\frac{7}{8}\) = 23/8
2 x 23/8 = 46/8 = 6 1/1

Question 8.
7 × 1 \(\frac{3}{4}\) =
______ \(\frac{□}{□}\)

Answer:
9\(\frac{3}{4}\)

Explanation:
1 \(\frac{3}{4}\) = 7/4
7 x 7/4 = 39/4
39/4 = 9 and the remainder is 3. So, the mixed fraction is 9 3/4

Question 9.
8 × 1 \(\frac{3}{5}\) =
______ \(\frac{□}{□}\)

Answer:
12\(\frac{4}{5}\)

Explanation:
1 \(\frac{3}{5}\) = 8/5
8 x 8/5 = 64/5
64/5 = 12 and the remainder is 4. So, the mixed fraction is 12 4/5

Problem Solving

Question 10.
Brielle exercises for \(\frac{3}{4}\) hour each day for 6 days in a row. Altogether, how many hours does she exercise during the 6 days?
______ \(\frac{□}{□}\)

Answer:
4\(\frac{2}{4}\)

Explanation:
6 x 3/4 = 18/4 = 4 and the remainder is 2. So, the mixed fraction is 4 2/4.

Question 11.
A recipe for quinoa calls for 2 \(\frac{2}{3}\) cups of milk. Conner wants to make 4 batches of quinoa. How much milk does he need?
______ \(\frac{□}{□}\)

Answer:
10\(\frac{2}{3}\)

Explanation:
quinoa calls for 8/3 cups of milk. Conner wants to make 4 batches of quinoa.
So, 4 x 8/3 = 32/3 = 10 and the remainder is 2. So, the mixed fraction is 10 2/3

Common Core – New – Page No. 480

Lesson Check

Question 1.
A mother is 1 \(\frac{3}{4}\) times as tall as her son. Her son is 3 feet tall. How tall is the mother?
Options:
a. 4 \(\frac{3}{4}\) feet
b. 5 \(\frac{1}{4}\) feet
c. 5 \(\frac{1}{2}\) feet
d. 5 \(\frac{3}{4}\) feet

Answer:
b. 5 \(\frac{1}{4}\) feet

Explanation:
A mother is 1 3/4 times as tall as her son. Her son is 3 feet tall.
So, 3 x 7/4 = 21/4 = 5 and the remainder is 1. The mixed fraction is 5 1/4 feet.

Question 2.
The cheerleaders are making a banner that is 8 feet wide. The length of the banner is 1 \(\frac{1}{3}\) times the width of the banner. How long is the banner?
Options:
a. 8 \(\frac{1}{3}\) feet
b. 8 \(\frac{3}{8}\) feet
c. 10 \(\frac{1}{3}\) feet
d. 10 \(\frac{2}{3}\) feet

Answer:
d. 10 \(\frac{2}{3}\) feet

Explanation:
The cheerleaders are making a banner that is 8 feet wide. he length of the banner is 1 1/3 times the width of the banner.
So, 8 x 4/3 = 32/3 =10 and the remainder is 2. The mixed fraction is 10 2/3 feet.

Spiral Review

Question 3.
Karleigh walks \(\frac{5}{8}\) mile to school every day. How far does she walk to school in 5 days?
Options:
a. \(\frac{5}{40}\) mile
b. \(\frac{25}{40}\) mile
c. \(\frac{10}{8}\) miles
d. \(\frac{25}{8}\) miles

Answer:
d. \(\frac{25}{8}\) miles

Explanation:
5 x 5/8 = 25/8.

Question 4.
Which number is a multiple of \(\frac{4}{5}\)?
Options:
a. \(\frac{8}{10}\)
b. \(\frac{12}{15}\)
c. \(\frac{16}{20}\)
d. \(\frac{12}{5}\)

Answer:
d. \(\frac{12}{5}\)

Explanation:
The multiple of \(\frac{4}{5}\) has the denominator 5. So, \(\frac{12}{5}\) is the correct answer.

Go Math Chapter 8 Grade 4 Answer Key Question 5.
Jo cut a key lime pie into 8 equal-size slices. The next day, \(\frac{7}{8}\) of the pie is left. Jo puts each slice on its own plate. How many plates does she need?
Options:
a. 5
b. 6
c. 7
d. 8

Answer:
c. 7

Explanation:
Jo cut a key lime pie into 8 equal-size slices. The next day, \(\frac{7}{8}\) of the pie is left. Jo puts each slice on its own plate. She needs 7 plates.

Question 6.
Over the weekend, Ed spent 1 \(\frac{1}{4}\) hours doing his math homework and 1 \(\frac{3}{4}\) hours doing his science project. Altogether, how much time did Ed spend doing homework over the weekend?
Options:
a. 3 hours
b. 2 \(\frac{3}{4}\) hours
c. 2 \(\frac{1}{2}\) hours
d. 2 hours

Answer:
a. 3 hours

Explanation:
5/4 + 7/4 = 12/4 = 3 hours

Page No. 483

Question 1.
Komodo dragons are the heaviest lizards on Earth. A baby Komodo dragon is 1 \(\frac{1}{4}\) feet long when it hatches. Its mother is 6 times as long. How long is the mother?
First, draw a bar model to show the problem.
Type below:
_________

Answer:
Grade 4 Chapter 8 Image 1 483

Question 1.
Then, write the equation you need to solve.
Type below:
_________

Answer:
A baby Komodo dragon is 5/4 feet.
Her mother is 6 x 5/4 = 30/4 feet long.

Question 1.
Finally, find the length of the mother Komodo dragon.
The mother Komodo dragon is _____ feet long.
______ \(\frac{□}{□}\)

Answer:
7\(\frac{2}{4}\)

Explanation:
30/4 = 7 and the remainder is 2. The mixed fraction is 7 2/4 feet.

Question 2.
What if a male Komodo dragon is 7 times as long as the baby Komodo dragon? How long is the male? How much longer is the male than the mother?
______ \(\frac{□}{□}\) feet long
______ \(\frac{□}{□}\) feet longer

Answer:
35/4 feet long
5/4 feet longer

Explanation:
If a male Komodo dragon is 7 times as long as the baby Komodo dragon, then 7 x 5/4 = 35/4.
35/4 – 30/4 = 5/4 feet male Komodo dragon is grater than female Komodo dragon.

Question 3.
The smallest hummingbird is the Bee hummingbird. It has a mass of about 1 \(\frac{1}{2}\) grams. A Rufous hummingbird’s mass is 3 times the mass of the Bee hummingbird. What is the mass of a Rufous hummingbird?
______ \(\frac{□}{□}\) grams

Answer:
9/2 grams

Explanation:

The smallest hummingbird is the Bee hummingbird. It has a mass of about 1 \(\frac{1}{2}\) grams. A Rufous hummingbird’s mass is 3 times the mass of the Bee hummingbird.
3 x 3/2 = 9/2 grams.

Question 4.
Sloane needs \(\frac{3}{4}\) hour to drive to her grandmother’s house. It takes her 5 times as long to drive to her cousin’s house. How long does it take to drive to her cousin’s house?
______ \(\frac{□}{□}\) hours

Answer:
\(\frac{15}{4}\) hours

Explanation:
5 x 3/4 = 15/4
To drive to her cousin’s house, it takes 15/4 hours.

Page No. 484

Use the table for 5 and 6.

Payton has a variety of flowers in her garden. The table shows the average heights of the flowers.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 17

tulip = 5/4 = 1.25
daisy = 5/2 = 2.5
tiger lily = 10/3 = 3.33
sunflower = 31/4 = 7.75

Question 5.
Make Sense of Problems What is the difference between the height of the tallest flower and the height of the shortest flower in Payton’s garden?
______ \(\frac{□}{□}\) feet

Answer:
6\(\frac{2}{4}\) feet

Explanation:
tallest flower = sunflower
shortest flower = tulip
The difference between the tallest flower and shortest flower = 31/4 – 5/4 = 26/4 =6 and the remainder is 2. So, the mixed fraction is 6 2/4 feet.

Question 6.
Payton says her average sunflower is 7 times the height of her average tulip. Do you agree or disagree with her statement? Explain your reasoning.
Type below:
_________

Answer:
I will disagree with her statement. Tulip = 5/4. 7 x 5/4 = 35/4. 31/4 is smaller than 35/4. So the statement is not correct.

Question 7.
Miguel ran 1 \(\frac{3}{10}\) miles on Monday. On Friday, Miguel ran 3 times as far as he did on Monday. How much farther did Miguel run on Friday than he did on Monday?
______ \(\frac{□}{□}\) miles

Answer:
3\(\frac{9}{10}\) miles

Explanation:
Miguel ran 13/10 miles on Monday.
On Friday, 3 x 13/10 = 39/10 miles = 3 and the remainder is 9. the mixed fraction is 3 9/10 miles

Question 8.
The table shows the lengths of different types of turtles at a zoo.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 18
For numbers 8a–8d, select True or False for each statement.
a. Daisy is 4 times as long as Tuck.
i. True
ii. False

Answer:
ii. False

Explanation:
Tuck = 7/6
Lolly = 35/6
Daisy = 7/2
7/6 x 4 = 28/6.
So, the statement is false.

Question 8.
b. Lolly is 5 times as long as Tuck.
i. True
ii. False

Answer:
i. True

Explanation:
5 x 7/6 = 35/6.
So, the statement is true.

Question 8.
c. Daisy is 3 times as long as Tuck.
i. True
ii. False

Answer:
i. True

Explanation:
3 x 7/6 = 21/6 = 7/2
So, the statement is true.

Question 8.
d. Lolly is 2 times as long as Daisy.
i. True
ii. False

Answer:
ii. False

Explanation:
2 x 7/2 = 7.
So, the statement is false.

Common Core – New – Page No. 485

Problem Solving Comparison

Problems with Fractions

Read each problem and solve.

Question 1.
A shrub is 1 \(\frac{2}{3}\) feet tall. A small tree is 3 times as tall as the shrub. How tall is the tree?
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers Common Core - New img 19

Answer:
5 feet

Explanation:
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers Common Core - New img 19

Question 2.
You run 1 \(\frac{3}{4}\) miles each day. Your friend runs 4 times as far as you do. How far does your friend run each day?
__________ miles

Answer:
7 miles

Explanation:
4 x 7/4 = 7 miles each day

Question 3.
At the grocery store, Ayla buys 1 \(\frac{1}{3}\) pounds of ground turkey. Tasha buys 2 times as much ground turkey as Ayla. How much ground turkey does Tasha buy?
______ \(\frac{□}{□}\) pounds

Answer:
2\(\frac{2}{3}\) pounds

Explanation:
2 x 4/3 = 8/3 = 2 and the remainder is 2. The mixed fraction is 2 2/3 pounds

Go Math Grade 4 Chapter 8 Review Test Answers Question 4.
When Nathan’s mother drives him to school, it takes \(\frac{1}{5}\) hour. When Nathan walks to school, it takes him 4 times as long to get to school. How long does it take Nathan to walk to school?
\(\frac{□}{□}\) hours

Answer:
\(\frac{4}{5}\) hours

Explanation:
4 x 1/5 = 4/5 hour

Common Core – New – Page No. 486

Lesson Check

Question 1.
A Wilson’s Storm Petrel is a small bird with a wingspan of 1 \(\frac{1}{3}\) feet. A California Condor is a larger bird with a wingspan almost 7 times as wide as the wingspan of the petrel. About how wide is the wingspan of the California Condor?
Options:
a. \(\frac{4}{21}\) foot
b. 2 \(\frac{1}{3}\) feet
c. 7 \(\frac{1}{3}\) feet
d. 9 \(\frac{1}{3}\) feet

Answer:
d. 9 \(\frac{1}{3}\) feet

Explanation:
1 1/3 = 4/3.
7 x 4/3 = 28/3 feet = 9 and the remainder is 1. The mixed fraction is 9 1/3

Question 2.
The walking distance from the Empire State Building in New York City to Times Square is about \(\frac{9}{10}\) mile. The walking distance from the Empire State Building to Sue’s hotel is about 8 times as far. About how far is Sue’s hotel from the Empire State Building?
Options:
a. \(\frac{9}{80}\) mile
b. \(\frac{72}{80}\) mile
c. 1 \(\frac{7}{10}\) miles
d. 7 \(\frac{2}{10}\) miles

Answer:
d. 7 \(\frac{2}{10}\) miles

Explanation:
8 x 9/10 mile = 72/10 mile = 7 and the remainder is 2. The mixed fraction is 7 2/10 miles.

Spiral Review

Question 3.
Which of the following expressions is NOT equal to 3 × 2 \(\frac{1}{4}\)?
Options:
a. 3 × \(\frac{9}{4}\)
b. (3 × 2) + (3 × \(\frac{1}{4}\))
c. 6 \(\frac{3}{4}\)
d. 3 × 2 + \(\frac{1}{4}\)

Answer:
d. 3 × 2 + \(\frac{1}{4}\)

Explanation:
3 × 2 \(\frac{1}{4}\) = 3 x 9/4 = 27/4
a. 3 × \(\frac{9}{4}\) = 27/4
b. (3 × 2) + (3 × \(\frac{1}{4}\)) = 6 + 3/4 = 27/4
c. 6 \(\frac{3}{4}\) = 27/4
d. 3 × 2 + \(\frac{1}{4}\) = 6 + 1/4 = 25/4

Question 4.
At a bake sale, Ron sells \(\frac{7}{8}\) of an apple pie and \(\frac{5}{8}\) of a cherry pie. Altogether, how much pie does he sell at the bake sale?
Options:
a. \(\frac{2}{8}\)
b. \(\frac{12}{16}\)
c. \(\frac{12}{8}\)
d. \(\frac{35}{8}\)

Answer:
c. \(\frac{12}{8}\)

Explanation:
7/8 + 5/8 = 12/8
The bake sale 12/8 pie.

Question 5.
On a ruler, which measurement is between \(\frac{3}{16}\) inch and \(\frac{7}{8}\) inch?
Options:
a. \(\frac{1}{16}\) inch
b. \(\frac{1}{8}\) inch
c. \(\frac{11}{16}\) inch
d. \(\frac{15}{16}\) inch

Answer:
c. \(\frac{11}{16}\) inch

Question 6.
Which of the following numbers is composite?
Options:
a. 4
b. 3
c. 2
d. 1

Answer:
a. 4

Explanation:
4 has more than 2 factors.

Page No. 487

Question 1.
What are the next four multiples of \(\frac{1}{8}\)?
Type below:
_________

Answer:
2/8, 3/8, 4/8, 5/8

Explanation:
1 x 1/8 = 1/8.
2 x 1/8 = 2/8.
3 x 1/8 = 3/8.
4 x 1/8 = 4/8.
5 x 1/8 = 5/8.
Next four multiples of 1/8 are 2/8, 3/8, 4/8, 5/8.

Question 2.
Marta is making 3 servings of fruit salad. She adds \(\frac{3}{8}\) cup blueberries for each serving. Her measuring cup holds \(\frac{1}{8}\) cup. How many times must Marta measure \(\frac{1}{8}\) cup of blueberries to have enough for the fruit salad? Shade the models to show your answer.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 20
Marta must measure \(\frac{1}{8}\) _________ cup times.
_________

Answer:
Grade 4 Chapter 8 Image 1 487

Marta must measure \(\frac{1}{8}\) 9 cup times.

Question 3.
Mickey exercises \(\frac{3}{4}\) hour every day. How many hours does he exercise in 8 days?
_____ hours

Answer:
6 hours

Explanation:
8 x 3/4 = 24/4 = 6

Page No. 488

Question 4.
Molly is baking for the Moms and Muffins event at her school. She will bake 4 batches of banana muffins. She needs 1 \(\frac{3}{4}\) cups of bananas for each batch of muffins.
Part A
Molly completed the multiplication below and said she needed 8 cups of bananas for 4 batches of muffins. What is Molly’s error?
\(4 \times 1 \frac{3}{4}=4 \times \frac{8}{4}=\times \frac{32}{4}=8\)
Type below:
_________

Answer:
4 x 1 3/4 = 4 x 8/4 = 8
Molly did not write the mixed number, 1 3/4 as a fraction correctly. 1 3/4 is not equal to 8/4.

Question 4.
Part B
What is the correct number of cups Molly needs for 4 batches of muffins? Explain how you found your answer.
_____ cups

Answer:
7 cups

Explanation:
She will bake 4 batches of banana muffins. She needs 7/4 cups of bananas for each batch of muffins.
So, if she prepares 4 batches of muffins = 4 x 7/4 = 7 cups of banana.

Question 5.
Which fraction is a multiple of \(\frac{1}{9}\)? Mark all that apply.
Options:
a. \(\frac{3}{9}\)
b. \(\frac{9}{12}\)
c. \(\frac{2}{9}\)
d. \(\frac{4}{9}\)
e. \(\frac{9}{10}\)
f. \(\frac{9}{9}\)

Answer:
a. \(\frac{3}{9}\)
c. \(\frac{2}{9}\)
d. \(\frac{4}{9}\)
f. \(\frac{9}{9}\)

Explanation:
The multiples of \(\frac{1}{9}\) have the denominator of 9.

Question 6.
Mimi recorded a soccer game that lasted 1 \(\frac{2}{3}\) hours. She watched it 3 times over the weekend to study the plays. How many hours did Mimi spend watching the soccer game? Show your work.
_____ hours

Answer:
5 hours

Explanation:
3 x 1 2/3 = 3 x 5/3 = 5 hours.

Question 7.
Theo is comparing shark lengths. He learned that a horn shark is 2 \(\frac{3}{4}\) feet long. A blue shark is 4 times as long. Complete the model. Then find the length of a blue shark.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 21
A blue shark is ____ feet long.
_____

Answer:
Grade 4 Chapter 8 Image 2 487
4 x 11/4 = 11.
A blue shark is 11 feet long.

Page No. 489

Question 8.
Joel made a number line showing the multiples of \(\frac{3}{5}\).
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 22
The product 2 × \(\frac{3}{5}\) is shown by the fraction _________ on the number line.
\(\frac{□}{□}\)

Answer:
The product 2 × \(\frac{3}{5}\) is shown by the fraction \(\frac{6}{5}\) on the number line.

Question 9.
Bobby has baseball practice Monday, Wednesday, and Friday. Each practice is 2 \(\frac{1}{2}\) hours. Bobby says he will have practice for 4 hours this week.
Part A
Without multiplying, explain how you know Bobby is incorrect.
Type below:
_________

Answer:
Bobby needs to find 3 × 2 1/2. If he estimates 3 × 2 hours, then he finds the practice is at least 6 hours. 6 is greater than 4, so Bobby’s answer is incorrect.

Question 9.
Part B
How long will Bobby have baseball practice this week? Write your answer as a mixed number. Show your work.
______ \(\frac{□}{□}\) hours

Answer:
7\(\frac{1}{2}\) hours

Explanation:
3 x 2 1/2 = 3 x 5/2 = 15/2 = 7 1/2

Question 10.
Look at the number line. Write the missing fractions.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 23
Type below:
_________

Answer:
9/6, 10/6, 11/6, 12/6

Go Math Grade 4 Pdf Chapter 8 Review/Test Answer Key Question 11.
Ana’s dachshund weighed 5 \(\frac{5}{8}\) pounds when it was born. By age 4, the dog weighed 6 times as much. Fill each box with a number or symbol from the list to show how to find the weight of Ana’s dog at age 4. Not all numbers and symbols may be used.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 24
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 25
Type below:
_________

Answer:
Grade 4 Chapter 8 Image 1 489

Page No. 490

Question 12.
Asta made a fraction number line to help her find 3 × \(\frac{4}{5}\).
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 26
Select a way to write 3 × \(\frac{4}{5}\) as the product of a whole number and a unit fraction.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 27
Type below:
_________

Answer:
Grade 4 Chapter 8 Image 1 490
12 × \(\frac{1}{5}\)

Explanation:
3 x 4/5 = 12/5 = 12 x 1/5.

Question 13.
Yusif wanted to give \(\frac{1}{3}\) of his total toy car collection to 2 of his friends. How many of his toy cars will he give away?
\(\frac{□}{□}\)

Answer:
\(\frac{2}{3}\)

Explanation:
Yusif wanted to give \(\frac{1}{3}\) of his total toy car collection to 2 of his friends. He has three toy cars in total. He has given 2 cars out of 3 cars. So, the answer is \(\frac{2}{3}\).

Question 14.
Select the correct product for the equation.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 28
4 × \(\frac{5}{8}\) = □ 4 × \(\frac{4}{8}\) = □
Type below:
_________

Answer:
4 × \(\frac{5}{8}\) = \(\frac{20}{8}\)
4 × \(\frac{4}{8}\) = \(\frac{16}{8}\)

Page No. 491

Question 15.
The lengths of different types of snakes at a zoo are shown in the table.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 29
For numbers 15a–15d, select True or False for the statement.
a. Bobby is 4 times as long as Kenny.
i. True
ii. False

Answer:
ii. False

Explanation:
Kenny = 3/2
Bobby = 9/2
Puck = 15/2
4 x 3/2 =6
So, the statement is false.

Question 15.
b. Bobby is 3 times as long as Kenny.
i. True
ii. False

Answer:
i. True

Explanation:
3 x 3/2 = 9/2
So, the statement is true.

Question 15.
c. Puck is 5 times as long as Kenny.
i. True
ii. False

Answer:
i. True

Explanation:
5 x 3/2 = 15/2
So, the statement is true.

Question 15.
d. Puck is 2 times as long as Bobby.
i. True
ii. False

Answer:
ii. False

Explanation:
2 x 9/2 = 9
So, the statement is false.

Question 16.
Hank used 3 \(\frac{1}{2}\) bags of seed to plant grass in his front yard. He used 3 times as much seed to plant grass in his back yard. How much seed did Hank need for the backyard?
_____ \(\frac{□}{□}\)

Answer:
10\(\frac{1}{2}\)

Explanation:
3 x 7/2 = 21/2 = 10 and the remainder is 1. The answer is 10 1/2.

Question 17.
Jess made a big kettle of rice and beans. He used 1 \(\frac{1}{2}\) cups of beans. He used 4 times as much rice.
Part A
Draw a model to show the problem.
Type below:
_________

Answer:
Grade 4 Chapter 8 Image 1 491

Question 17.
Part B
Use your model to write an equation. Then solve the equation to find the amount of rice Jess needs.
Type below:
_________

Answer:
6 cups

Explanation:
Rice = 4 x 3/2 = 12/2 = 6.
Jess needs 6 cups of rice.

Page No. 492

Question 18.
Mrs. Burnham is making modeling clay for her class. She needs \(\frac{2}{3}\) cup of warm water for each batch.
Part A
Mrs. Burnham has a 1-cup measure that has no other markings. Can she make 6 batches of modeling clay using only the 1-cup measure? Describe two ways you can find the answer.
Type below:
_________

Answer:
Yes. She needs 6 x 2/3 cups of water. 6 x 2/3 = 12/3 = 4 cups.
So, she can use the 1-cup measure 4 times to make 6 batches.

Question 18.
Part B
The modeling clay recipe also calls for \(\frac{1}{2}\) cup of cornstarch. Nikki says Mrs. Burnham will also need 4 cups of cornstarch. Do you agree or disagree? Explain.
Type below:
_________

Answer:
Disagree; 6 x 1/2 = 3 cups of cornstrach.
She doesn’t need 4 cups of cornstarch.

Question 19.
Donna buys some fabric to make place mats. She needs \(\frac{1}{5}\) yard of each type of fabric. She has 9 different types of fabrics to make her design. Use the following equation. Write the number in the box to make the statement true.
\(\frac{9}{5}\) = ______ × \(\frac{1}{5}\)

Answer:
9

Question 20.
Mr. Tuyen uses \(\frac{5}{8}\) of a tank of gas each week to drive to and from his job. How many tanks of gas does Mr. Tuyen use in 5 weeks? Write your answer two different ways.
Mr. Tuyen uses __________ or _________ tanks of gas.
Type below:
_________

Answer:
Mr. Tuyen uses 25/8 or 3\(\frac{1}{8}\) tanks of gas

Explanation:
5 x 5/8 = 25/8 = 3 and the remainder is 1. So, the mixed fraction is 3 1/8.

Question 21.
Rico is making 4 batches of salsa. Each batch needs \(\frac{2}{3}\) cup of corn. He only has a \(\frac{1}{3}\)– cup measure. How many times must Rico measure \(\frac{1}{3}\) cup of corn to have enough for all of the salsa?
______ times

Answer:
8 times

Explanation:
Rico is making 4 batches of salsa. Each batch needs \(\frac{2}{3}\) cup of corn. He only has a \(\frac{1}{3}\)– cup measure.
So, he needs 2x 1/3 cups for one batch. For 4 batches of salsa, 4 x 2 = 8 cups of corn required.

Page No. 497

Question 1.
Write five tenths as a fraction and as a decimal.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 30
Fraction: __________ Decimal: __________
Type below:
_________

Answer:
Grade 4 Chapter 8 Image 1 497
5/10 = 0.5

Write the fraction or mixed number and the decimal shown by the model.

Question 2.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 31
Type below:
_________

Answer:
3\(\frac{2}{10}\)
three and two-tenths

Question 3.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 32
Type below:
_________

Answer:
\(\frac{8}{10}\)
Grade 4 Chapter 8 Image 2 497

Write the fraction or mixed number and the decimal shown by the model.

Question 4.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 33
Type below:
_________

Answer:
4/10 = 0.4

Explanation:
4 boxes are shaded out of 10 boxes. So, the fraction is 4/10.

Question 5.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 34
Type below:
_________

Answer:
1\(\frac{2}{10}\)

Question 6.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 35
Type below:
_________

Answer:
2\(\frac{9}{10}\)

Question 7.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 36
Type below:
_________
Answer:
3\(\frac{4}{10}\)

Practice: Copy and Solve Write the fraction or mixed number as a decimal.

Question 8.
5 \(\frac{9}{10}\) = _____

Answer:
\(\frac{59}{10}\)

Explanation:
Multiply 10 x 5 = 50.
Add 50 + 9 = 59.
The fraction is 59/10

Question 9.
\(\frac{1}{10}\) = _____

Answer:
0.1

Question 10.
\(\frac{7}{10}\) = _____

Answer:
0.7

Question 11.
8 \(\frac{9}{10}\) = _____

Answer:
\(\frac{89}{10}\)

Explanation:
Multiply 10 x 8 = 80.
Add 80 + 9 = 89.
The fraction is 89/10

Question 12.
\(\frac{6}{10}\) = _____

Answer:
0.6

Question 13.
6 \(\frac{3}{10}\) = _____

Answer:
\(\frac{63}{10}\)

Explanation:
Multiply 10 x 6 = 60.
Add 60 + 3 = 63.
The fraction is 63/10

Question 14.
\(\frac{5}{10}\) = _____

Answer:
0.5

Question 15.
9 \(\frac{7}{10}\) = _____

Answer:
\(\frac{97}{10}\)

Explanation:
Multiply 10 x 9 = 90.
Add 90 +7 = 97.
The fraction is 97/10

Page No. 498

Use the table for 16−19.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 37
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 38

Question 16.
What part of the rocks listed in the table are igneous? Write your answer as a decimal.
_____

Answer:
0.5

Question 17.
Sedimentary rocks make up what part of Ramon’s collection? Write your answer as a fraction and in word form.
Type below:
_________

Answer:
3/10 and three-tenths

Question 18.
What part of the rocks listed in the table are metamorphic? Write your answer as a fraction and as a decimal.
Type below:
_________

Answer:
2/10 or 0.2

Question 19.
Communicate Niki wrote the following sentence in her report: “Metamorphic rocks make up 2.0 of Ramon’s rock collection.” Describe her error.
Type below:
_________

Answer:
Metamorphic rocks make up 2.0 of Ramon’s rock collection. But from the given table, it is clearly mentioned that the answer is 0.2. So, she made a mistake to make up Ramon’s rock collection.

Question 20.
Josh paid for three books with two $20 bills. He received $1 in change. Each book was the same price. How much did each book cost?
$ _____ each book

Answer:
$19/3 for each book.

Explanation:
Josh paid for three books with two $20 bills. He received $1 in change. So, he paid $19 for three books. As the each book has same price, the answer is $19/3 for each book.

Question 21.
Select a number shown by the model. Mark all that apply.
Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers img 39
Type below:
_________

Answer:
1\(\frac{7}{10}\)
1.7

Conclusion:

Go Math Grade 4 Answer Key Chapter 8 Multiply Fractions by Whole Numbers PDF with solved problems are provided here. Review every problem and way of answering. Refer Grade 4 Chapter 8 Answer Key to get success in exams. Get your estimated grade with easy learning. It is possible when you use Go Math Grade 4 Chapter 8 Multiply Fractions by Whole Numbers Solution Key.

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Go Math Grade 4 Chapter 6 Answer Key Pdf Fraction Equivalence and Comparison

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Fraction Equivalence and Comparison Go Math Grade 4 Chapter 6 Answer Key Pdf

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Lesson 1: Investigate • Equivalent Fractions

Lesson 2: Generate Equivalent Fractions

Lesson 3: Simplest Form

Lesson 4: Common Denominators

Lesson 5: Problem Solving • Find Equivalent Fractions

Mid-Chapter Checkpoint

Lesson 6: Compare Fractions Using Benchmarks

Lesson 7: Compare Fractions

Lesson 8: Compare and Order Fractions

Review/Test

Common Core – Equivalent Fractions – Page No. 331

Equivalent Fractions
Use the model to write an equivalent fraction.

Question 1.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Equivalent Fractions img 1
\(\frac{4}{6}=\frac{2}{3}\)

Answer:
\(\frac{4}{6}=\frac{2}{3}\)

Explanation:
The first image has 4 parts shaded our of 6 parts. Divide \(\frac{8}{10}\) with 2. You will get \(\frac{2}{3}\). That means 2 parts are shaded out of 3 parts.

Question 2.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Equivalent Fractions img 2
\(\frac{3}{4}\) = \(\frac{□}{□}\)

Answer:
\(\frac{3}{4}\) = \(\frac{6}{8}\)

Explanation:
The first image has 3 parts shaded our of 4 parts. Multiply \(\frac{8}{10}\) with 2. You will get \(\frac{6}{8}\). That means 6 parts are shaded out of 8 parts.

Tell whether the fractions are equivalent. Write = or ≠.

Question 3.
\(\frac{8}{10}\) _______ \(\frac{4}{5}\)

Answer:
\(\frac{8}{10}\) = \(\frac{4}{5}\)

Explanation:
Multiply the numerator and denominator of 4 / 5 with 2
8 / 10 = (2 / 2 ) x (4 / 5 )
= 8 / 10
So, 8 / 10 = 4 / 5.

Question 4.
\(\frac{1}{2}\) _______ \(\frac{7}{12}\)

Answer:
\(\frac{1}{2}\) ≠ \(\frac{7}{12}\)

Explanation:
Multiply the numerator and denominator of 1 / 2 with 6
1 / 2 = (6 / 6) x (1 / 2)
= (6 / 12)
So, 1/2 ≠ 7 / 12

My Homework Lesson 6 Answer Key 4th Grade Question 5.
\(\frac{3}{4}\) _______ \(\frac{8}{12}\)

Answer:
\(\frac{3}{4}\) ≠ \(\frac{8}{12}\)

Explanation:
Multiply the numerator and denominator of 3 / 4 with 3
3 / 4 = (3 / 3) x (3 / 4)
= (9 / 12)
So, 3 / 4 ≠ 8 / 12

Question 6.
\(\frac{2}{3}\) _______ \(\frac{4}{6}\)

Answer:
\(\frac{2}{3}\) = \(\frac{4}{6}\)

Explanation:
Multiply the numerator and denominator of 2 / 3 with 2
2 / 3 = (2 / 2) x ( 2 / 3 )
= 4 / 6
So, 2 / 3 = 4 / 6.

Question 7.
\(\frac{5}{8}\) _______ \(\frac{4}{10}\)

Answer:
\(\frac{5}{8}\) ≠ \(\frac{4}{10}\)

Explanation:
Multiply the numerator and denominator of 5 / 8 with 2
5 / 8 =(2 / 2) x (5 / 8)
= (10 / 16)
So, 5 / 8 ≠ 4 / 10

Question 8.
\(\frac{2}{6}\) _______ \(\frac{4}{12}\)

Answer:
\(\frac{2}{6}\) = \(\frac{4}{12}\)

Explanation:
Multiply the numerator and denominator of 2 / 6 with 2
2 / 6 = (2 / 2) x (2 / 6)
= (4 / 12)
So, 2 / 6 = 4 / 12.

Question 9.
\(\frac{20}{100}\) _______ \(\frac{1}{5}\)

Answer:
\(\frac{20}{100}\) = \(\frac{1}{5}\)

Explanation:
Cross Multiply the 20 / 100 with 20 / 20
20 / 100 = (20 / 20) x (20 / 100)
= (1 / 5)
So, 20 / 100 = 1 / 5.

Question 10.
\(\frac{5}{8}\) _______ \(\frac{9}{10}\)

Answer:
\(\frac{5}{8}\) ≠ \(\frac{9}{10}\)

Explanation:
Multiply the numerator and denominator of 5 / 8 with 2
5 / 8 = (2 / 2) x (5 / 8)
= 10 / 16
So, 5 / 8 ≠ 9 / 10

Question 11.
Jamal finished \(\frac{5}{6}\) of his homework. Margaret finished \(\frac{3}{4}\) of her homework, and Steve finished \(\frac{10}{12}\) of his homework. Which two students finished the same amount of homework?
_______

Answer:
Jamal and Steve

Explanation:
As per the given data,
Jamal finished work = 5 /6 of his homework
Margaret finished work = 3 / 4th of her homework
Steve finished work = 10 / 12 of his homework
Multiply the numerator and denominator of 5/ 6 with 2
Then, (2 / 2) x (5 / 6) = 10 / 12
Then, Jamal and Steve finished the same amount of homework.

Go Math Grade 4 Chapter 6 Review/Test Answer Key Question 12.
Sophia’s vegetable garden is divided into 12 equal sections. She plants carrots in 8 of the sections. Write two fractions that are equivalent to the part of Sophia’s garden that is planted with carrots.
Type below:
___________

Answer:
\(\frac{2}{3}\) and \(\frac{4}{6}\)

Explanation:
As per the given data,
Sophia’s vegetable garden is divided into 12 equal sections
She plants carrots in 8 of the sections out of 12 sections = 8 / 12
By simplifying the 8 / 12, we will get 4 / 6
Again simplify the 4 /6 by dividing method, you will get 2 /3
2 / 3 = (2 / 2) x (2 / 3)
= 4 / 6
Then, the equivalent fractions are 2 / 3, 4 /6

Common Core – Equivalent Fractions – Page No. 332

Question 1.
A rectangle is divided into 8 equal parts. Two parts are shaded. Which fraction is equivalent to the shaded area of the rectangle?
Options:
a. \(\frac{1}{4}\)
b. \(\frac{1}{3}\)
c. \(\frac{2}{6}\)
d. \(\frac{3}{4}\)

Answer:
a. \(\frac{1}{4}\)

Explanation:
As per the given data,
A rectangle is divided into 8 equal parts
Two parts are shaded
Then, the shaded area of the rectangle = 2 / 8
By simplifying the 2/ 8, you will get 1/ 4
So, the shaded area of the rectangle = 1 / 4

Question 2.
Jeff uses 3 fifth-size strips to model \(\frac{3}{5}\). He wants to use tenth-size strips to model an equivalent fraction. How many tenth-size strips will he need?
Options:
a. 10
b. 6
c. 5
d. 3

Answer:
b. 6

Explanation:
From the given data,
Jeff uses 3 fifth–size strips to model = 3 / 5 size strips
If he wants to use tenth–size strips to an equivalent fraction = 1 / 10 size strips
The number of strips = x
(1 / 10) x = 3 / 5
x = 30/5
Then, the required number of tenth-size trips = 6

Go Math Grade 4 Chapter 6 Answer Key Pdf Question 3.
Cassidy places 40 stamps on each of the 8 album pages. How many stamps does she place in all?
Options:
a. 300
b. 320
c. 360
d. 380

Answer:
b. 320

Explanation:
As per the given data,
Cassidy places 40 stamps on each of 8 album pages = 8 x 40
= 320
So, the total placed stamps on album pages by Cassidy = 320 stamps

Question 4.
Maria and 3 friends have 1,200 soccer cards. If they share the soccer cards equally, how many will each person receive?
Options:
a. 30
b. 40
c. 300
d. 400

Answer:
c. 300

Explanation:
As per the given data,
Maria and 3 friends have 1200 soccer cards
If soccer cards shared equally by four members = 1200/4
= 300
Then, each person received soccer cards = 300

Question 5.
Six groups of students sell 162 balloons at the school carnival. There are 3 students in each group. If each student sells the same number of balloons, how many balloons does each student sell?
Options:
a. 9
b. 18
c. 27
d. 54

Answer:
a. 9

Explanation:
As per the given, data,
Six groups of students sell 162 balloons at the school carnival
There are 3 students in each group
Then, total number of students in 6 groups = 6 x 3 = 18
If each student sells the same number of balloons = 162 / 18
= 9
Number of balloons sells by each student = 9

Question 6.
Four students each made a list of prime numbers.
Eric: 5, 7, 17, 23
Maya: 3, 5, 13, 17
Bella: 2, 3, 17, 19
Jordan: 7, 11, 13, 21
Who made an error and included a composite number?
Options:
a. Eric
b. Maya
c. Bella
d. Jordan

Answer:
d. Jordan

Explanation:
As per the given data,
Four students each made a list of prime numbers.
Eric: 5, 7, 17, 23
Maya: 3, 5, 13, 17
Bella: 2, 3, 17, 19
Jordan: 7, 11, 13, 21
21 is not a prime number
So, An error made by Jordan

Page No. 335

Question 1.
Complete the table below.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 3
Type below:
___________

Answer:
chapter 6 - Common Core - Image 3. jpg

Write two equivalent fractions.

Question 2.
\(\frac{4}{5}\)
\(\frac{4}{5}\) = \(\frac { 4×□ }{ 5×□ } \) = \(\frac{□}{□}\)
\(\frac{4}{5}\) = \(\frac { 4×□ }{ 5×□ } \) = \(\frac{□}{□}\)
\(\frac{4}{5}\) = \(\frac{□}{□}\) = \(\frac{□}{□}\)
Type below:
___________

Answer:
\(\frac{4}{5}\) = \(\frac{8}{10}\) = \(\frac{80}{100}\)

Explanation:
Two equivalent fractions of 4/5,
(4/5) x (2/2) = 8/10
And
(4/5) x (20/20) = 80/100
8/10 = (8/10) (10/10)
= (80/100)
So, the equivalent fractions of 4/5 = 8/10, 80/100

Question 3.
\(\frac{2}{4}\)
\(\frac{2}{4}\) = \(\frac { 2×□ }{ 4×□ } \) = \(\frac{□}{□}\)
\(\frac{2}{4}\) = \(\frac { 2×□ }{ 4×□ } \) = \(\frac{□}{□}\)
\(\frac{2}{4}\) = \(\frac{□}{□}\) = \(\frac{□}{□}\)
Type below:
___________

Answer:
\(\frac{2}{4}\) = \(\frac{4}{8}\) = \(\frac{8}{16}\)

Explanation:
Two equivalent fractions of 2/4,
(2/4) x (2/2) = 4/8
And
(2/4) x (4/4) = 8/16
4/8 = (4/8) (2/2)
= (8/16)
So, the equivalent fractions of 2/4 = 4/8, 8/16

Write two equivalent fractions.

Question 4.
\(\frac{3}{6}\)
\(\frac{3}{6}\) = \(\frac{□}{□}\) = \(\frac{□}{□}\)
Type below:
___________

Answer:
\(\frac{3}{6}\) = \(\frac{6}{12}\) = \(\frac{12}{24}\)

Explanation:
Two equivalent fractions of 3/6,
(3/ 6) x (2/2) = 6/12
And
(3/6) x (4/ 4) = 12/24
6/12 = (6/12) (2/2)
= (12/24)
So, the equivalent fractions of 3/6 = 6/12, 12/24

Question 5.
\(\frac{3}{10}\)
\(\frac{3}{10}\) = \(\frac{□}{□}\) = \(\frac{□}{□}\)
Type below:
___________

Answer:
\(\frac{3}{10}\) = \(\frac{6}{20}\) = \(\frac{12}{40}\)

Explanation:
Two equivalent fractions of 3/10,
(3/ 10) x (2/2) = 6/20
And
(3/10) x (4/ 4) = 12/40
6/20 = (6/20) (2/2)
= (12/40)
So, the equivalent fractions of 3/10 = 6/20, 12/40

Question 6.
\(\frac{2}{5}\)
\(\frac{2}{5}\) = \(\frac{□}{□}\) = \(\frac{□}{□}\)
Type below:
___________

Answer:
\(\frac{2}{5}\) = \(\frac{4}{10}\) = \(\frac{8}{20}\)

Explanation:
Two equivalent fractions of 2/5,
(2/ 5) x (2/2) = 4/10
And
(2/5) x (4/ 4) = 8/20
4/10 = (4/10) (2/2)
= (8/20)
So, the equivalent fractions of 2/5 = 4/10, 8/20

Tell whether the fractions are equivalent. Write = or ≠.

Question 7.
\(\frac{5}{6}\) ______ \(\frac{10}{18}\)

Answer:
\(\frac{5}{6}\) ≠ \(\frac{10}{18}\)

Explanation:
Multiply the numerator and denominator of 5/6 with 2
5/6 =(2/2) x (5/6)
= (10/12)
So, 5/6 ≠ 10/ 18

Go Math Grade 4 Answer Key Chapter 6 Question 8.
\(\frac{4}{5}\) ______ \(\frac{8}{10}\)

Answer:
\(\frac{4}{5}\) = \(\frac{8}{10}\)

Explanation:
Multiply the numerator and denominator of 4/5 with 2
4/5 =(2/2) x (4/5)
= (8/10)
So, 4/5 = 8/10

Question 9.
\(\frac{1}{5}\) ______ \(\frac{4}{10}\)

Answer:
\(\frac{1}{5}\) ≠ \(\frac{4}{10}\)

Explanation:
Multiply the numerator and denominator of 1/5 with 4
1/5 =(4/4) x (1/5)
= (4/20)
So, 1/5 ≠ 4/10

Question 10.
\(\frac{1}{4}\) ______ \(\frac{2}{8}\)

Answer:
\(\frac{1}{4}\) = \(\frac{2}{8}\)

Explanation:
Multiply the numerator and denominator of 1/4 with 2
1/4 =(2/2) x (1/4)
= (2/8)
So, 1/4 = 2/8

Page No. 336

Use the recipe for 11–12.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 4

Question 11.
Kim says the amount of flour in the recipe can be expressed as a fraction. Is she correct? Explain.
______

Answer:
As per the given data, Kim says the amount of flour in the recipe can be expressed as a fraction. But in the recipe, 1 tablespoon flour is added. So, Kim says wrong.

Question 12.
How could you use a \(\frac{1}{8}\) – cup measuring cup to measure the light corn syrup?
Type below:
_________

Answer:
As per the given data,
By using the 1/8 cup measure the 9/12 cup light corn syrup
(9/12)/(1/8) = (9 x 8)/12
= (3 x 8)/4
= (3 x 2)
= 6
So, required 6 cups of 1/8 to measure the light corn syrup of 9/12.

Question 13.
Communicate Explain using words how you know a fraction is equivalent to another fraction.
Type below:
_________

Answer:
If you multiply the numerator and denominator of the first fraction by the same number and the products are the numerator and denominator of the second fraction, then the fractions are equivalent

Question 14.
Kyle drank \(\frac{2}{3}\) cup of apple juice. Fill in each box with a number from the list to generate equivalent fractions for \(\frac{2}{3}\). Not all numbers will be used.
Type below:
_________

Answer:
\(\frac{4}{6}\) and \(\frac{12}{18}\)

Explanation:
As per the given data,
Kyle drank 2/3 cup of apple juice
(2/3) x (2/2) = 4/6
(4/6) x (3/3) = 12/18
Equivalent fractions of 2/3 are 4/6 and 12/18

Common Core – Equivalent Fractions – Page No. 337

Write two equivalent fractions for each.

Question 1.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Equivalent Fractions img 5

Answer:
\(\frac{2}{6}\) and \(\frac{4}{12}\)

Explanation:
1/3
(1/3) x (2/2) = 2/6
(1/3) x (4/4) = 4/12
So, the equivalent fractions of 1/3 are 2/6 and 4/12

Question 2.
\(\frac{2}{3}\)
Type below:
_________

Answer:
\(\frac{4}{6}\) and \(\frac{8}{12}\)

Explanation:
2/3
(2/3) x (2/2) = 4/6
(2/3) x (4/4) = 8/12
Then, the equivalent fractions of 2/3 = 4/6 and 8/12

Go Math Grade 4 Lesson 6.2 Answer Key Question 3.
\(\frac{1}{2}\)
Type below:
_________

Answer:
\(\frac{2}{4}\) and \(\frac{4}{8}\)

Explanation:
1/2
(1/2) x (2/2) = 2/4
(1/2) x (4/4) = 4/8
Then, the equivalent fractions of 1/2 = 2/4, 4/8

Question 4.
\(\frac{4}{5}\)
Type below:
_________

Answer:
\(\frac{8}{10}\) and \(\frac{80}{100}\)

Explanation:
4/5
(4/5) x (2/2) = 8/10
(4/5) x (20/20) = 80/100
Then, the equivalent fractions of 4/5 = 8/10 and 80/100

Tell whether the fractions are equivalent. Write # or ≠.

Question 5.
\(\frac{1}{4}\) ______ \(\frac{3}{12}\)

Answer:
\(\frac{1}{4}\) = \(\frac{3}{12}\)

Explanation:
1/4
Multiply the numerator and denominator of 1/4 with 3
Then, (1/4) x (3/3) = 3/12
So, 1/4 = 3/12

Question 6.
\(\frac{4}{5}\) ______ \(\frac{5}{10}\)

Answer:
\(\frac{4}{5}\) ≠ \(\frac{5}{10}\)

Explanation:
4/5
Multiply numerator and denominator of 4/5 with 2
(4/5) x (2/2) = 8/10
Then 4/5 ≠ 5/10

Question 7.
\(\frac{3}{8}\) ______ \(\frac{2}{6}\)

Answer:
\(\frac{3}{8}\) ≠ \(\frac{2}{6}\)

Explanation:
3/8 ≠ 2/6

Question 8.
\(\frac{3}{4}\) ______ \(\frac{6}{8}\)

Answer:
\(\frac{3}{4}\) = \(\frac{6}{8}\)

Explanation:
3/4
Multiply the numerator and denominator of 3/4 with 2
Then, (3/4) x (2/2) = 6/8
So, 3/4 = 6/8

Question 9.
\(\frac{5}{6}\) ______ \(\frac{10}{12}\)

Answer:
\(\frac{5}{6}\) = \(\frac{10}{12}\)

Explanation:
5/6
Multiply the numerator and denominator with 2
(5/6) x (2/2) = 10/12
So, 5/6 = 10/12

Question 10.
\(\frac{6}{12}\) ______ \(\frac{5}{8}\)

Answer:
\(\frac{6}{12}\) ≠ \(\frac{5}{8}\)

Explanation:
6/12 ≠ 5/8

Question 11.
\(\frac{2}{5}\) ______ \(\frac{4}{10}\)

Answer:
\(\frac{2}{5}\) = \(\frac{4}{10}\)

Explanation:
2/5
Multiply the numerator and denominator of 2/5 with 2
(2/5) x (2/2) = 4/10
So, 2/5 = 4/10

Question 12.
\(\frac{2}{4}\) ______ \(\frac{3}{12}\)

Answer:
\(\frac{2}{4}\) ≠ \(\frac{3}{12}\)

Explanation:
2/4
Multiply the numerator and denominator of 2/4 with 3
(2/4) x (3/3) = 6/12
So, 2/4 ≠ 3/ 12

Question 13.
Jan has a 12-ounce milkshake. Four ounces in the milkshake are vanilla, and the rest is chocolate. What are two equivalent fractions that represent the fraction of the milkshake that is vanilla?
Type below:
_________

Answer:
\(\frac{1}{3}\) and \(\frac{2}{6}\)

Explanation:
As per the given data,
Jan has a 12-ounce milkshake
Four ounces in the milkshake are vanilla = 4/12 = 1/3
Then, 8-ounces in milkshake are chocolate = 8/12 = 2/3
4/12 = 1/3
By multiplying 1/3 with 2
(1/3) x (2/2) = 2/6
So, the equivalent fractions of vanilla milkshake are 1/3 and 2/6

Question 14.
Kareem lives \(\frac{4}{10}\) of a mile from the mall. Write two equivalent fractions that show what fraction of a mile Kareem lives from the mall.
Type below:
_________

Answer:
\(\frac{2}{5}\) and \(\frac{8}{20}\)

Explanation:
As per the given data,
Kareem lives 4/10 of a mile from the mall
To find the equivalent fractions of 4/10
Simplify the 4/10 = 2/5
Multiply the numerator and denominator of 2/5 with 4
(2/5) x (4/4) = 8/20
Then, the equivalent fraction of a mile Kareem lives from the mall = 2/5 and 8/20

Common Core – Equivalent Fractions – Page No. 338

Question 1.
Jessie colored a poster. She colored \(\frac{2}{5}\) of the poster red. Which fraction is equivalent to \(\frac{2}{5}\)?
Options:
a. \(\frac{4}{10}\)
b. \(\frac{7}{10}\)
c. \(\frac{4}{5}\)
d. \(\frac{2}{2}\)

Answer:
a. \(\frac{4}{10}\)

Explanation:
As per the given data,
Jessie colored a poster
She colored 2/5th of the poster red
Multiply the numerator and denominator of 2/5 with 2
Then, (2/5) x (2/2) = 4 /10
So, the equivalent fraction of 2/5 is 4/10

Question 2.
Marcus makes a punch that is \(\frac{1}{4}\) cranberry juice. Which two fractions are equivalent to \(\frac{1}{4}\)?
Options:
a. \(\frac{2}{5}, \frac{3}{12}\)
b. \(\frac{2}{8}, \frac{4}{12}\)
c. \(\frac{3}{4}, \frac{6}{8}\)
d. \(\frac{2}{8}, \frac{3}{12}\)

Answer:
d. \(\frac{2}{8}, \frac{3}{12}\)

Explanation:
As per the given data,
Marcus makes a punch that is 1/4th of cranberry juice
Multiply the numerator and denominator of 1/4 with 2
Then, (1/4) x (2/2) = 2/8
Multiply the numerator and denominator of 1/4 with 3
Then, (1/4) x (3/3) = 3/12
Equivalent fractions of 1/4 are 2/8 and 3/12

Question 3.
An electronics store sells a large flat-screen television for $1,699. Last month, the store sold 8 of these television sets. About how much money did the store make on the television sets?
Options:
a. $160,000
b. $16,000
c. $8,000
d. $1,600

Answer:
b. $16,000

Explanation:
As per the given data,
An electronics store sells a large flat-screen television for $1,699
Last month, the store sold 8 of these television sets = 8 x $1,699 = $13,952. The money is about to $16,000.

Question 4.
Matthew has 18 sets of baseball cards. Each set has 12 cards. About how many baseball cards does Matthew have in all?
Options:
a. 300
b. 200
c. 150
d. 100

Answer:
b. 200

Explanation:
From the given data,
Matthew has 18 sets of basketball cards
Each set has 12 cards = 12 x 18
= 216
Total number of basketball cards with Matthew = 216. So, it is near to 200.

Question 5.
Diana had 41 stickers. She put them in 7 equal groups. She put as many as possible in each group. She gave the leftover stickers to her sister. How many stickers did Diana give to her sister?
Options:
a. 3
b. 4
c. 5
d. 6

Answer:
d. 6

Explanation:
As per the given data,
Diana has 41 stickers
She put them in 7 equal groups = 41/7
= 5 (remaining 6)
She gave the leftover stickers to her sister
The number of stickers Diana gives to her sister = 6

Question 6.
Christopher wrote the number pattern below. The first term is 8.
8, 6, 9, 7, 10, …
Which is a rule for the pattern?
Options:
a. Add 2, add 3.
b. Add 6, subtract 3.
c. Subtract 6, add 3.
d. Subtract 2, add 3

Answer:
d. Subtract 2, add 3

Explanation:
From the given data,
Christopher wrote the number pattern = 8, 6, 9, 7, 10, …..
The first number in the pattern = 8
8 – 2 = 6 + 3 = 9 – 2 = 7 +3 = 10 ….
So, the rule for the above pattern is to subtract 2, add 3

Page No. 341

Question 1.
Write \(\frac{8}{10}\) in simplest form.
\(\frac{8}{10}\) = \(\frac { 8÷□ }{ 10÷□ } \) = \(\frac{□}{□}\)
\(\frac{□}{□}\)

Answer:
\(\frac{4}{5}\)

Explanation:
8/10 in simplest form
Divide the 8/10 with 2
(8/2)/(10/2) = 4/5
So, the simplest form of 8/10 is 4/5

Write the fraction in simplest form.

Question 2.
\(\frac{6}{12}\)
\(\frac{□}{□}\)

Answer:
\(\frac{1}{2}\)

Explanation:
6/12 in simplest form
Divide the 6/12 with 6
(6/6)/(12/6) = 1/2
So, the simplest form of 6/12 is 1/2

Question 3.
\(\frac{2}{10}\)
\(\frac{□}{□}\)

Answer:
\(\frac{1}{5}\)

Explanation:
2/10 in simplest form
Divide the 2/10 with 2
(2/2)/(10/2) = 1/5
So, the simplest form of 2/10 is 1/5

Question 4.
\(\frac{6}{8}\)
\(\frac{□}{□}\)

Answer:
\(\frac{3}{4}\)

Explanation:
6/8 in simplest form
Divide the 6/8 with 2
(6/2)/(8/2) = 3/4
So, the simplest form of 6/8 is 3/4

Question 5.
\(\frac{4}{6}\)
\(\frac{□}{□}\)

Answer:
\(\frac{2}{3}\)

Explanation:
4/6 in simplest form
Divide the 4/6 with 2
(4/2)/(6/2) = 2/3
So, the simplest form of 4/6 is 2/3

Write the fraction in simplest form.

Question 6.
\(\frac{9}{12}\)
\(\frac{□}{□}\)

Answer:
\(\frac{3}{4}\)

Explanation:
9/12in simplest form
Divide the 9/12 with 3
(9/3)/(12/3) = 3/4
So, the simplest form of 9/12 is 3/4

Lesson 6.3 Answer Key 4th Grade Question 7.
\(\frac{4}{8}\)
\(\frac{□}{□}\)

Answer:
\(\frac{1}{2}\)

Explanation:
4/8in simplest form
Divide the 4/8 with 4
(4/4)/(8/4) = 1/2
So, the simplest form of 4/8 is 1/2

Question 8.
\(\frac{10}{12}\)
\(\frac{□}{□}\)

Answer:
\(\frac{5}{6}\)

Explanation:
10/12 in simplest form
Divide the 10/12 with 2
(10/2)/(12/2) = 5/6
So, the simplest form of 10/12 is 5/6

Question 9.
\(\frac{20}{100}\)
\(\frac{□}{□}\)

Answer:
\(\frac{1}{5}\)

Explanation:
20 /100 in simplest form
Divide the 20/100 with 20
(20/20)/(100/20) = 1/5
So, the simplest form of 20/100 is 1/5

Tell whether the fraction is in simplest form. Write yes or no.

Question 10.
\(\frac{2}{8}\)
______

Answer:
No

Explanation:
2/8 in simplest form
Divide the 2/8 with 2
(2/2)/(8/2) = 1/4
The simplest form of 2/8 is 1/4
So, 2/8 is not the simplest form

Question 11.
\(\frac{9}{12}\)
______

Answer:
No

Explanation:
9/12 in simplest form
Divide the 9/12 with 3
(9/3)/(12/3) = 3/4
The simplest form of 9/12 is 3/4
So, 9/12 is not the simplest form

Question 12.
\(\frac{5}{6}\)
______

Answer:
Yes

Explanation:
5/6 is not divided by any number
Yes, 5/6 is the simplest form

Question 13.
\(\frac{4}{10}\)
______

Answer:
No

Explanation:
4/10 in simplest form
Divide the 4/10 with 2
(4/2)/(10/2) = 2/5
So, 4/10 is not the simplest form

Question 14.
There are 18 students in Jacob’s homeroom. Six students bring their lunch to school. The rest eat lunch in the cafeteria. In the simplest form, what fraction of students eat lunch in the cafeteria?
\(\frac{□}{□}\) of students

Answer:
\(\frac{2}{3}\) of students

Explanation:
As per the given data,
There are 18 students in Jacob’s homeroom
6 students bring their lunch to school = 6/18 = 1/3
The rest eat lunch in the cafeteria = 18 – 6 = 12/18
Divide the numerator and denominator of 12/18 with 6
(12/6) x (18/6) = 2/3
So, 2/3 of students eat lunch in the cafeteria

Page No. 342

Use the map for 15−16.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 6

Question 15.
Identify Relationships What fraction of the states in the southwest region share a border with Mexico? Is this fraction in simplest form?
\(\frac{□}{□}\)

Answer:
Yes, \(\frac{3}{4}\)

Explanation:
As per the given data,
Southwest region states = 4
Number of states in the southwest region shares a border with Mexico out of total southwest region states = 3/4
Yes, 3/4 is the simplest form

Question 16.
What’s the Question? \(\frac{1}{3}\) of the states in this region are on the Gulf of Mexico.
Type below:
_________

Answer:
In the simplest form, what fraction of the states in the southeast area on the Gulf of Mexico?

Common Denominators Lesson 6.4 Question 17.
Pete says that to write \(\frac{4}{6}\) as \(\frac{2}{3}\), you combine pieces, but to write \(\frac{4}{6}\) as \(\frac{8}{12}\), you break apart pieces. Does this make sense? Explain.
______

Answer:
As per the given data,
Yes, it makes sense,
To write 4/6 as 2/3 combine sixth-size pieces into equal groups of 2
Then (4/2)/(6/2) = 2/3
To write 4/6 as 8/12, break each sixth piece into 2 pieces
Then, 4/6 = (4 x 2)/(6 x 2) = 8/12

Question 18.
In Michelle’s homeroom, \(\frac{9}{15}\) of the students ride the bus to school, \(\frac{4}{12}\) get a car ride, and \(\frac{2}{30}\) walk to school.
For numbers 18a–18c, select True or False for each statement.
a. In simplest form, \(\frac{3}{5}\) of the students ride the bus to school.
i. True
ii. False

Answer:
i. True

Explanation:
9/15 of the students ride the bus to school
By dividing the numerator and denominator of 9/15 with 3
(9/3)/(15/3) =3/5
So, 3/5 of the students ride the bus to school
True

Question 18.
b. In simplest form, \(\frac{1}{4}\) of the students get a car ride to school.
i. True
ii. False

Answer:
ii. False

Explanation:
a. 4/12 of the students get a car ride
The simplest form of 4/12 = 1/3
So, 1/4 of the students get a car ride to school is a False statement

Question 18.
c. In simplest form, \(\frac{1}{15}\) of the students walk to school.
i. True
ii. False

Answer:
i. True

Explanation:
a. 2/30 of the students walk to school
By dividing the 2/30 with 2
(2/2)/(30/2) = 1/15
So, 1/15 of the students walk to school is a true statement

Common Core – Simplest Form – Page No. 343

Write the fraction in simplest form.

Question 1.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Simplest Form img 7

Answer:
\(\frac{3}{5}\)

Explanation:
To write the 6/10 in the simplest form
Divide the numerator and denominator of 6/10 with 2
(6 ÷2)/(10 ÷2) = 3/5
So, the simplest form of 6/10 = 3/5

Question 2.
\(\frac{6}{8}\) = \(\frac{□}{□}\)

Answer:
\(\frac{3}{4}\)

Explanation:
To write the 6/8in a simplest form
Divide the numerator and denominator of 6/8 with 2
(6 ÷2)/(8 ÷2) = 3/4
So, the simplest form of 6/8 = 3/4

Question 3.
\(\frac{5}{5}\) = \(\frac{□}{□}\)

Answer:
\(\frac{1}{1}\) = 1

Explanation:
To write the 5/5in a simplest form
Divide the numerator and denominator of 5/5 with 5
(5 ÷5)/(5 ÷5) = 1/1
So, the simplest form of 5/5 = 1

Question 4.
\(\frac{8}{12}\) = \(\frac{□}{□}\)

Answer:
\(\frac{2}{3}\)

Explanation:
To write the 8/12in a simplest form
Divide the numerator and denominator of 8/12 with 4
(8 ÷4)/(12 ÷4) = 2/3
So, the simplest form of 8/12 = 2/3

Question 5.
\(\frac{100}{100}\) = \(\frac{□}{□}\)

Answer:
\(\frac{1}{1}\) = 1

Explanation:
The simplest form of 100/100 = 1

Question 6.
\(\frac{2}{6}\) = \(\frac{□}{□}\)

Answer:
\(\frac{1}{3}\)

Explanation:
To write the 2/6in a simplest form
Divide the numerator and denominator of 2/6 with 2
(2 ÷2)/(6 ÷2) = 1/3
So, the simplest form of 2/6 = 1/3

Question 7.
\(\frac{2}{8}\) = \(\frac{□}{□}\)

Answer:
\(\frac{1}{4}\)

Explanation:
To write the 2/8in a simplest form
Divide the numerator and denominator of 2/8 with 2
(2 ÷2)/(8 ÷2) = 1/4
So, the simplest form of 2/8 = 1/4

Question 8.
\(\frac{4}{10}\) = \(\frac{□}{□}\)

Answer:
\(\frac{2}{5}\)

Explanation:
To write the 4/10 in a simplest form
Divide the numerator and denominator of 4 /10 with 2
(4 ÷2)/(10 ÷2) = 2/5
So, the simplest form of 4/10 = 2/5

Tell whether the fractions are equivalent. Write = or ≠. (if you do not have ≠on your keyboard, copy and paste this one: ≠ )

Question 9.
\(\frac{6}{12}\) _______ \(\frac{1}{12}\)

Answer:
\(\frac{6}{12}\) ≠ \(\frac{1}{12}\)

Explanation:
6/12 ≠ 1/12

Question 10.
\(\frac{3}{4}\) _______ \(\frac{5}{6}\)

Answer:
\(\frac{3}{4}\) ≠ \(\frac{5}{6}\)

Explanation:
3/4 ≠ 5/6

Question 11.
\(\frac{6}{10}\) _______ \(\frac{3}{5}\)

Answer:
\(\frac{6}{10}\) = \(\frac{3}{5}\)

Explanation:
6/10
Divide the numerator and denominator of 6/10 with 2
(6 ÷ 2)/( 10 ÷ 2) = 3/5
So, 6/10 = 3/5

Question 12.
\(\frac{3}{12}\) _______ \(\frac{1}{3}\)

Answer:
\(\frac{3}{12}\) ≠ \(\frac{1}{3}\)

Explanation:
3/12 ≠ 1/3

Question 13.
\(\frac{6}{10}\) _______ \(\frac{60}{100}\)

Answer:
\(\frac{6}{10}\) = \(\frac{60}{100}\)

Explanation:
6/10
Multiply the numerator and denominator of 6/10 with 10
(6 x 10)/(10 x 10) = 60/100
So, 6/10 = 60/100

Lesson 6.4 Go Math 4th Grade Question 14.
\(\frac{11}{12}\) _______ \(\frac{9}{10}\)

Answer:
\(\frac{11}{12}\) ≠ \(\frac{9}{10}\)

Explanation:
11/12 ≠ 9/10

Question 15.
\(\frac{2}{5}\) _______ \(\frac{8}{20}\)

Answer:
\(\frac{2}{5}\) = \(\frac{8}{20}\)

Explanation:
2/5
Multiply the numerator and denominator of 2/5 with 4
(2 x 4)/(5 x 4) = 8/20
So, 2/5 = 8/20

Question 16.
\(\frac{4}{8}\) _______ \(\frac{1}{2}\)

Answer:
\(\frac{4}{8}\) = \(\frac{1}{2}\)

Explanation:
4/8
Divide the numerator and denominator of 4/8 with 4
(4 x 4)/(8 x 4) = 1/2
So, 4/8 = 1/2

Question 17.
At Memorial Hospital, 9 of the 12 babies born on Tuesday were boys. In the simplest form, what fraction of the babies born on Tuesday were boys?
_______

Answer:
\(\frac{3}{4}\)

Explanation:
As per the given data,
At Memorial Hospital, 9 of the 12 babies born on Tuesday were boys = 9/12
Divide the numerator and denominator of 9/12 with 3
(9 ÷ 3)/(12 ÷ 3) = 3/4
So, in the simplest form
3/4 of the babies born on Tuesday were boys

Question 18.
Cristina uses a ruler to measure the length of her math textbook. She says that the book is \(\frac{4}{10}\) meter long. Is her measurement in simplest form? If not, what is the length of the book in simplest form?
\(\frac{□}{□}\)

Answer:
\(\frac{2}{5}\)

Explanation:
As per the given data,
Cristiana uses a ruler to measure the length of her math textbook
She says that the book is 4/10meter long
It is not in the simplest form
Divide the numerator and denominator of 4/10 with 2
(4÷ 2)/( 10 ÷ 2) = 2/5
The length of the book in the simplest form = 2/5

Common Core – Simplest Form – Page No. 344

Question 1.
Six out of the 12 members of the school choir are boys. In the simplest form, what fraction of the choir is boys?
Options:
a. \(\frac{1}{6}\)
b. \(\frac{6}{12}\)
c. \(\frac{1}{2}\)
d. \(\frac{12}{6}\)

Answer:
c. \(\frac{1}{2}\)

Explanation:
As per the given data,
Six out of the 12 members of the school choir are boys = 6/12
To write the simplest form of 6/12, divide the numerator and denominator with 6
Then, (6 ÷ 6)/(12 ÷ 6) = 1/2
In the simplest form, 1/2 of the choir is boys

Question 2.
Which of the following fractions is in simplest form?
Options:
a. \(\frac{5}{6}\)
b. \(\frac{6}{8}\)
c. \(\frac{8}{10}\)
d. \(\frac{2}{12}\)

Answer:
a. \(\frac{5}{6}\)

Explanation:
5/6 is in the simplest form
6/8 simplest form = 3/4
8/10 simplest form = 4/5
2/12 simplest form = 1/6

Question 3.
Each of the 23 students in Ms. Evans’ class raised $45 for the school by selling coupon books. How much money did the class raise in all?
Options:
a. $207
b. $225
c. $1,025
d. $1,035

Answer:
d. $1,035

Explanation:
As per the given data,
Each of the 23 students in Ms. Evan’s class raised $45 for the school by selling coupon books
= 23 x $45
= $1,035

Question 4.
Which pair of numbers below have 4 and 6 as common factors?
Options:
a. 12, 18
b. 20, 24
c. 28, 30
d. 36, 48

Answer:
d. 36, 48

Explanation:
36, 48
Here, 36 = 4 x 9
= 2 x 2 x 3 x 3
48 = 6 x 8
= 2 x 3 x 4 x 2

Question 5.
Bart uses \(\frac{3}{12}\) cup milk to make muffins. Which fraction is equivalent to \(\frac{3}{12}\)?
Options:
a. \(\frac{1}{4}\)
b. \(\frac{1}{3}\)
c. \(\frac{1}{2}\)
d. \(\frac{2}{3}\)

Answer:
a. \(\frac{1}{4}\)

Explanation:
As per the given data,
Bart uses 3/12 cup of milk to make muffins
Divide the fraction with 3
(3 ÷ 3)/(12 ÷ 3) = 1/4
So, the equivalent fraction for 3/12 = 1/4

Go Math Lesson 6.4 Answer Key Homework 4th Grade Question 6.
Ashley bought 4 packages of juice boxes. There are 6 juice boxes in each package. She gave 2 juice boxes to each of 3 friends. How many juice boxes does Ashley have left?
Options:
a. 24
b. 22
c. 18
d. 12

Answer:
c. 18

Explanation:
As per the given data,
Ashley bought 4 packages of juice boxes
There are 6 juice boxes in each package = 6 x 4 = 24
She gave 2 juice boxes to each of 3 friends = 2 x 3 = 6 juice boxes
So, 24 – 6 = 18
Total number of juice boxes left with Ashley = 18

Page No. 347

Question 1.
Find a common denominator for \(\frac{1}{3}\) and \(\frac{1}{12}\) by dividing each whole into the same number of equal parts. Use the models to help.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 8
common denominator:

Answer:
common denominator: 12

Explanation:
List the multiples of 3 = 3, 6, 9, 12, 15, 18, 21, ….
List the multiples of 12 = 12, 24, 36, 48, ….
So, the common denominators of 1/3 and 1/ 12 are 12

Write the pair of fractions as a pair of fractions with a common denominator.

Question 2.
\(\frac{1}{2}\) and \(\frac{1}{4}\)
Type below:
_________

Answer:
\(\frac{4}{8}\) and \(\frac{2}{8}\)

Explanation:
Common denominator of 1/2 and 1/4
List the multiples of 2 = 2, 4, 6, 8, 10, …
List the multiples of 4 = 4, 8, 12, 16, 20, 24, . . .
Then, the common denominator of 1/2 and 1/4 is 4
For the Common pair of fractions, multiply the common denominator with fractions
That is, (1 x 4) ÷( 2 x 4) and ( 1 x 4 ) ÷ ( 4 x 4)
So, the common pair of fractions = 4/8 and 2/8

Question 3.
\(\frac{3}{4}\) and \(\frac{5}{8}\)
Type below:
_________

Answer:
\(\frac{6}{8}\) and \(\frac{5}{8}\)

Explanation:
Common denominator of 3/4 and 5/8
List the multiples of 4 = 4, 8, 12, 16, 20, 24, . . .
List the multiples of 8 = 8, 16, 24, 32, . . . .
Then, the common denominator of 3/4 and 5/8 is 8
For the Common pair of fractions, multiply the common denominator with fractions
That is, (3 x 8) ÷( 4 x 8) and ( 5 x 8 ) ÷ ( 8 x 8)
So, the common pair of fractions = 6/8 and 5/8

Question 4.
\(\frac{1}{3}\) and \(\frac{1}{4}\)
Type below:
_________

Answer:
\(\frac{4}{12}\) and \(\frac{3}{12}\)

Explanation:
The common denominator of 1/3 and 1/4
List the multiples of 3 = 3, 6, 9, 12, 15, 18, 21, 24, ….
List the multiples of 4 = 4, 8, 12, 16, 20, 24, . . .
Then, the common denominator of 1 /3 and 1/4 is 12
For the Common pair of fractions, multiply the common denominator with fractions
That is, (1 x 12) ÷( 3 x 12) and ( 1 x 12 ) ÷ ( 4 x 12)
So, the common pair of fractions = 4/12 and 3/12

Question 5.
\(\frac{4}{12}\) and \(\frac{5}{8}\)
Type below:
_________

Answer:
\(\frac{8}{24}\) and \(\frac{15}{24}\)

Explanation:
Common denominator of 4/12 and 5/8
List the multiples of 12 = 12, 24, 36, 48, 60, …..
List the multiples of 8 = 8, 16, 24, 32, 40, 48, …
Then, the common denominator of 4/12 and 5/8 is 24
For the Common pair of fractions, multiply the common denominator with fractions
That is, (4 x 24) ÷( 12 x 24) and ( 5 x 24 ) ÷ ( 8 x 24)
So, the common pair of fractions = 8/24 and 15/24

Write the pair of fractions as a pair of fractions with a common denominator.

Question 6.
\(\frac{1}{4}\) and \(\frac{5}{6}\)
Type below:
_________

Answer:
\(\frac{3}{12}\) and \(\frac{10}{12}\)

Explanation:
The common denominator of 1/4 and 5/6
List the multiples of 4 = 4, 8, 12, 16, 20, 24, . . .
List the multiples of 6 = 6, 12, 18, 24, 30, 36, ….
Then, the common denominator of 1/4 and 5/6 is 12
For the Common pair of fractions, multiply the common denominator with fractions
That is, (1 x 12) ÷( 4 x 12) and ( 5 x 12 ) ÷ ( 6 x 12)
So, common pair of fractions = 3/12 and 10/12

Lesson 6.4 Common Denominators Answer Key Question 7.
\(\frac{3}{5}\) and \(\frac{4}{10}\)
Type below:
_________

Answer:
\(\frac{6}{10}\) and \(\frac{4}{10}\)

Explanation:
The common denominator of 3/5 and 4/10
List the multiples of 5 = 5, 10, 15, 20, 25, 30, …..
List the multiples of 10 = 10, 20, 30, 40, 50 ….
Then, the common denominator of 3/5 and 4/10 is 10
For the Common pair of fractions, multiply the common denominator with fractions
That is, (3 x 10) ÷( 5 x 10) and ( 4 x 10 ) ÷ ( 10 x 10)
So, the common pair of fractions = 6/10 and 4/10

Tell whether the fractions are equivalent. Write = or ≠.

Question 8.
\(\frac{3}{4}\) ______ \(\frac{1}{2}\)

Answer:
\(\frac{3}{4}\) ≠ \(\frac{1}{2}\)

Explanation:
3/4 ≠ 1/2

Question 9.
\(\frac{3}{4}\) ______ \(\frac{6}{8}\)

Answer:
\(\frac{3}{4}\) = \(\frac{6}{8}\)

Explanation:
3/4
Multiply the numerator and denominator of 3/4 with 2
(3 x 2) ÷ ( 4 x 2 ) = 6/8
So, 3/4 = 6/8

Question 10.
\(\frac{1}{2}\) ______ \(\frac{4}{8}\)

Answer:
\(\frac{1}{2}\) = \(\frac{4}{8}\)

Explanation:
1/2
Multiply the numerator and denominator of 1/2 with 4
(1 x 4) ÷ ( 2 x 4 ) = 4/8
So, 1/2 = 4/8

Question 11.
\(\frac{6}{8}\) ______ \(\frac{4}{8}\)

Answer:
\(\frac{6}{8}\) ≠ \(\frac{4}{8}\)

Explanation:
6/8 ≠ 4/8

Question 12.
Jerry has two same-size circles divided into the same number of equal parts. One circle has \(\frac{3}{4}\) of the parts shaded, and the other has \(\frac{2}{3}\) of the parts shaded. His sister says the least number of pieces each circle could be divided into is 7. Is his sister correct? Explain.
______

Answer:
As per the given data,
Jerry has two same size circles divided into the same number of equal parts
One circle has 3/4 of the parts shaded
So, non-shaded parts of one circle = 1 – 3/4 = 1/4
Another circle has 2/3 of the parts shaded
Non – shaded parts = 1 – 2/3 = 1/3
We can’t draw a conclusion about how many parts or pieces a circle can be divided
So, his sister is incorrect

Page No. 348

Question 13.
Carrie has a red streamer that is \(\frac{3}{4}\) yard long and a blue streamer that is \(\frac{5}{6}\) yard long. She says the streamers are the same length. Does this make sense? Explain.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 9
______

Answer:
Carrie has a red streamer that is 3/4 yard long
The blue streamer that is 5/6 yard long
3/4 ≠ 5/6
She says the streamers are the same length, it doesn’t make any sense.

Question 14.
Leah has two same-size rectangles divided into the same number of equal parts. One rectangle has \(\frac{1}{3}\) of the parts shaded, and the other has \(\frac{2}{5}\) of the parts shaded. What is the least number of parts into which both rectangles could be divided?
______ parts

Answer:
15 parts

Explanation:
As per the given data,
Leah has two same size rectangles divided into the same number of equal parts
One rectangle has 1/3 of the parts shaded
Other rectangle has 2/5 of the parts shaded
15 parts

Question 15.
Julian says a common denominator for \(\frac{3}{4}\) and \(\frac{2}{5}\) is 9. What is Julian’s error? Explain.
Type below:
___________

Answer:
As per the given data,
Julian says a common denominator for 3/4 and 2/5 is 9
To find the common denominator for 3/4 and 2/5
List the multiples of 4 = 4, 8, 12, 16, 20, 24, 28, 32, …..
List the multiples of 5 = 5, 10, 15, 20, 25, 30, ….
So, the common denominator for 3/4 and 2/5 is 20
Julian says 9 in place of 20 and it is wrong.

Go Math 4th Grade Chapter 6 Answer Key Question 16.
Miguel has two same-size rectangles divided into the same number of equal parts. One rectangle has \(\frac{3}{4}\) of the parts shaded, and the other has \(\frac{5}{8}\) of the parts shaded.
Into how many parts could each rectangle be divided? Show your work by sketching the rectangles.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 10
______ parts

Answer:
chapter 6 - simplest form - image 1. jpg
8 parts

Explanation:
As per the given data,
Miguel has two same–size rectangles divided into the same number of equal parts.
One rectangle has 3/4 of the parts shaded.
Another has 5/8 of the parts shaded.
The possible parts are 8.

Common Core – Common Denominators – Page No. 349

Write the pair of fractions as a pair of fractions with a common denominator.

Question 1.
\(\frac{2}{3} \text { and } \frac{3}{4}\)
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Common Denominators img 11

Answer:
\(\frac{8}{12} \text { and } \frac{9}{12}\)

Explanation:
2/3 and 3/4
List the multiples of 3 = 3, 6, 9, 12, 15, 18, 21, 24, …
List the multiples of 4 = 4, 8, 12, 16, 20, …
Common multiple of 3 and 4 is 12
For the Common pair of fractions, multiply the common denominator with fractions
That is, (2 x 12) ÷( 3 x 12) and ( 3 x 12 ) ÷ ( 4 x 12)
So, common pair of fractions = 8/12 and 9/12

Question 2.
\(\frac{1}{4} \text { and } \frac{2}{3}\)
Type below:
_________

Answer:
\(\frac{3}{12} \text { and } \frac{8}{12}\)

Explanation:
1/4 and 2/3
List the multiples of 4 = 4, 8, 12, 16, 20, …
List the multiples of 3 = 3, 6, 9, 12, 15, 18, …
Common multiple of 4 and 3 is 12
For the Common pair of fractions, multiply the common denominator with fractions
That is, (1 x 12) ÷( 4 x 12) and ( 2 x 12 ) ÷ ( 3 x 12)
So, common pair of fractions = 3/12 and 8/12

Question 3.
\(\frac{3}{10} \text { and } \frac{1}{2}\)
Type below:
_________

Answer:
\(\frac{3}{10} \text { and } \frac{5}{10}\)

Explanation:
3/10 and 1/2
List the multiples of 10 = 10, 20, 30, 40, 50, ….
List the multiples of 2 = 2, 4, 6, 8, 10, 12, 14, ….
Common multiple of 10 and 2 is 10
For the Common pair of fractions, multiply the common denominator with fractions
That is, (3 x 10) ÷( 10 x 10) and ( 1 x 10 ) ÷ ( 2 x 10)
So, common pair of fractions = 3/10 and 5/10

Question 4.
\(\frac{3}{5} \text { and } \frac{3}{4}\)
Type below:
_________

Answer:
\(\frac{12}{20} \text { and } \frac{15}{20}\)

Explanation:
3/5 and 3/4
List the multiples of 5 = 5, 10, 15, 20, 25, 30, ….
List the multiples of 4 = 4, 8, 12, 16, 20, 24, …
Common multiple of 5 and 4 is 20
For the Common pair of fractions, multiply the common denominator with fractions
That is, (3 x 20) ÷( 5 x 20) and ( 3 x 20 ) ÷ ( 4 x 20)
So, common pair of fractions = 12/20 and 15/20

Question 5.
\(\frac{2}{4} \text { and } \frac{7}{8}\)
Type below:
_________

Answer:
\(\frac{4}{8} \text { and } \frac{7}{8}\)

Explanation:
2/4 and 7/8
List the multiples of 4 = 4, 8, 12, 16, 20, 24, …
List the multiples of 8 = 8, 16, 24, 32, 40, ….
Common multiple of 4 and 8 is 8
For the Common pair of fractions, multiply the common denominator with fractions
That is, (2 x 8) ÷( 4 x 8) and ( 7 x 8 ) ÷ ( 8 x 8)
So, common pair of fractions = 4/8 and 7/8

Question 6.
\(\frac{2}{3} \text { and } \frac{5}{12}\)
Type below:
_________

Answer:
\(\frac{8}{12} \text { and } \frac{5}{12}\)

Explanation:
2/3 and 5/12
List the multiples of 3 = 3, 6, 9, 12, 15, 18, …
List the multiples of 12 = 12, 24, 36, 48, 60, …
Common multiple of 3 and 12 is 12
For the Common pair of fractions, multiply the common denominator with fractions
That is, (2 x 12) ÷( 3 x 12) and ( 5 x 12 ) ÷ ( 12 x 12)
So, common pair of fractions = 8/12 and 5/12

Question 7.
\(\frac{1}{4} \text { and } \frac{1}{6}\)
Type below:
_________

Answer:
\(\frac{3}{12} \text { and } \frac{2}{12}\)

Explanation:
1/4 and 1/6
List the multiples of 4 = 4, 8, 12, 16, 20, 24, …
List the multiples of 6 = 6, 12, 18, 24, 30, …
Common multiple of 4 and 6 is 12
For the Common pair of fractions, multiply the common denominator with fractions
That is, (1 x 12) ÷( 4 x 12) and ( 1 x 12 ) ÷ ( 6 x 12)
So, common pair of fractions = 3/12 and 2/12

Tell whether the fractions are equivalent. Write = or ≠.

Question 8.
\(\frac{1}{2}\) ______ \(\frac{2}{5}\)

Answer:
\(\frac{1}{2}\) ≠ \(\frac{2}{5}\)

Explanation:
Multiply the numerator and denominator of 1/2 with 2
(1 x 2) ÷ (2 x 2) = 2/4
So, 1/2 ≠ 2/5

Question 9.
\(\frac{1}{2}\) ______ \(\frac{3}{6}\)

Answer:
\(\frac{1}{2}\) = \(\frac{3}{6}\)

Explanation:
1/2
Multiply the numerator and denominator of 1/2 with 3
(1 x 3) ÷ (2 x 3) = 3/6
So, 1/2 = 3/6

Question 10.
\(\frac{3}{4}\) ______ \(\frac{5}{6}\)

Answer:
\(\frac{3}{4}\) ≠ \(\frac{5}{6}\)

Explanation:
3/4 ≠ 5/6

Question 11.
\(\frac{6}{10}\) ______ \(\frac{3}{5}\)

Answer:
\(\frac{6}{10}\) = \(\frac{3}{5}\)

Explanation:
6/10
Divide the numerator and denominator of 6/10 with 2
(6 ÷ 2)/(10 ÷2) = 3/5
So, 6/10 = 3/5

Question 12.
\(\frac{6}{8}\) ______ \(\frac{3}{4}\)

Answer:
\(\frac{6}{8}\) = \(\frac{3}{4}\)

Explanation:
6/8
Divide the numerator and denominator of 6/8 with 2
(6 ÷2)/(8 ÷2) = 3/4
So, 6/8 = 3/4

Question 13.
\(\frac{3}{4}\) ______ \(\frac{2}{3}\)

Answer:
\(\frac{3}{4}\) ≠ \(\frac{2}{3}\)

Explanation:
3/4 ≠ 2/3

Question 14.
\(\frac{2}{10}\) ______ \(\frac{4}{5}\)

Answer:
\(\frac{2}{10}\) ≠ \(\frac{4}{5}\)

Explanation:
2/10
Divide the numerator and denominator of 2/10 with 2
(2 ÷ 2)/(10 ÷ 2) = 1/5
So, 2/10 ≠ 1/5

Question 15.
\(\frac{1}{4}\) ______ \(\frac{3}{12}\)

Answer:
\(\frac{1}{4}\) = \(\frac{3}{12}\)

Explanation:
1/4
Multiply the numerator and denominator of 1/4 with 3
(1 x 3)/(4 x 3) = 3/12
So, 1/4 = 3/12

Go Math Grade 4 Chapter 6 Review Test Answer Key Question 16.
Adam drew two same-sized rectangles and divided them into the same number of equal parts. He shaded \(\frac{1}{3}\) of one rectangle and \(\frac{1}{4}\) of other rectangle. What is the least number of parts into which both rectangles could be divided?
_________

Answer:
12 parts

Explanation:
As per the given data,
Adam drew two same size rectangles and divided them into the same number of equal parts
He shaded 1/3 of one rectangle
1/4 of another rectangle
List the multiples of 3 = 3, 6, 9, 12, 15, 18, …
List the multiples of 4 = 4, 8, 12, 16, 20, …
A common multiple of 3 and 4 is 12
So, the least number of parts which rectangles could be divided = 12 parts

Question 17.
Mera painted equal sections of her bedroom wall to make a pattern. She painted \(\frac{2}{5}\) of the wall white and \(\frac{1}{2}\) of the wall lavender. Write an equivalent fraction for each using a common denominator.
Type below:
_________

Answer:
1/2 are 4/10 and 5/10

Explanation:
As per the given data,
Mera painted equal sections of her bedroom wall to make a pattern
She painted 2/5 of the wall white and 1/2 of the wall lavender
List the multiples of 5 = 5, 10, 15, 20, 25, 30, …
List the multiples of 2 = 2 ,4, 6, 8, 10, 12, 14, …
The common denominator of 2/5 and 1/2 = 10
Multiply the 2/5 and 1/2 with 10
(2 x 10)/(5 x 10) and (1 x 10)/(2 x 10)
4/10 and 5/10
So, common fractions of 2/5 and 1/2 are 4/10 and 5/10

Common Core – Common Denominators – Page No. 350

Question 1.
Which of the following is a common denominator of \(\frac{1}{4}\) and \(\frac{5}{6}\)?
Options:
a. 8
b. 9
c. 12
d. 15

Answer:
c. 12

Explanation:
The common denominator of 1/4 and 5/6
List the multiples of 4 = 4, 8, 12, 16, 20, 24, …
List the multiples of 6 = 6, 12, 18, 24, 30, ….
So, the common denominator of 1/4 and 5/6 is 12

Question 2.
Two fractions have a common denominator of 8. Which of the following could be the two fractions?
Options:
a. \(\frac{1}{2} \text { and } \frac{2}{3}\)
b. \(\frac{1}{4} \text { and } \frac{1}{2}\)
c. \(\frac{3}{4} \text { and } \frac{1}{6}\)
d. \(\frac{1}{2} \text { and } \frac{4}{5}\)

Answer:
b. \(\frac{1}{4} \text { and } \frac{1}{2}\)

Explanation:
As per the given data,
Two fractions have a common denominator of 8
a. 1/2 and 2/3
List the multiples of 2 = 2, 4, 6, 8,10, ….
List the multiples of 3 = 3, 6, 9, 12, …
There is no common denominator of 8 for 1/2 and 2/3
b. 1/4 and 1 /2
List the multiples of 2 = 2, 4, 6, 8,10, ….
List the multiples of 4 = 4, 8, 12, 16, …
Here, the common denominator of 1 /4 and 1 /2 is 8
So, the answer is 1/4 and 1/2

Question 3.
Which number is 100,000 more than seven hundred two thousand, eighty-three?
Options:
a. 703,083
b. 712,083
c. 730,083
d. 802,083

Answer:
d. 802,083

Explanation:
802,083

Question 4.
Aiden baked 8 dozen muffins. How many total muffins did he bake?
Options:
a. 64
b. 80
c. 96
d. 104

Answer:
c. 96

Explanation:
As per the given data,
Aiden baked 8 dozen muffins
1 dozen = 12
then, 8 dozens = 12 x 8 = 96
So, Aiden baked total 96 muffins

Question 5.
On a bulletin board, the principal, Ms. Gomez, put 115 photos of the fourth grade students in her school. She put the photos in 5 equal rows. How many photos did she put in each row?
Options:
a. 21
b. 23
c. 25
d. 32

Answer:
b. 23

Explanation:
As per the given data,
On a bulletin board, the principal, Ms. Gomez, put 115 photos of the fourth-grade students in her school
She put the photos in 5 equal rows
Then, number of photos in each row = 115/5 = 23
So, Ms. Gomez put photos in each row = 23

Question 6.
Judy uses 12 tiles to make a mosaic. Eight of the tiles are blue. What fraction, in simplest form, represents the tiles that are blue?
Options:
a. \(\frac{2}{3}\)
b. \(\frac{2}{5}\)
c. \(\frac{3}{4}\)
d. \(\frac{12}{18}\)

Answer:
a. \(\frac{2}{3}\)

Explanation:
As per the given data,
Judy uses 12 tiles to make a mosaic
Eight of the tiles are blue = 8/12
Divide the numerator and denominator of 8/12 with 4
(8 ÷ 4)/(12 ÷ 4) = 2/3
The simplest form of 8/12 is 2/3

Page No. 353

Question 1.
Keisha is helping plan a race route for a 10-kilometer charity run. The committee wants to set up the following things along the course.
Viewing areas: At the end of each half of the course
Water stations: At the end of each fifth of the course
Distance markers: At the end of each tenth of the course
Which locations have more than one thing located there?
First, make a table to organize the information.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 12
Next, identify a relationship. Use a common denominator, and find equivalent fractions.
Finally, identify the locations at which more than one thing will be set up. Circle the locations.
Type below:
___________

Answer:
Keisha is helping plan a race route for a 10-kilometer charity run.

Question 2.
What if distance markers will also be placed at the end of every fourth of the course? Will any of those markers be set up at the same location as another distance marker, a water station, or a viewing area? Explain.
Type below:
___________

Answer:
It really depends on where you place the other markers.

Question 3.
Fifty-six students signed up to volunteer for the race. There were 4 equal groups of students, and each group had a different task.
How many students were in each group?
_____ students

Answer:
14 students

Explanation:
As per the given data,
Fifty-six students signed up to volunteer for the race
There are four groups of students
Number of students in each group = 56/4 = 14
Total number of students in each group = 14

Page No. 354

Question 4.
A baker cut a pie in half. He cut each half into 3 equal pieces and each piece into 2 equal slices. He sold 6 slices. What fraction of the pie did the baker sell?
\(\frac{□}{□}\)

Answer:
\(\frac{1}{2}\)

Explanation:
A baker cut a pie in half. He cut each half into 3 equal pieces and each piece into 2 equal slices. He sold 6 slices. So, the remaining part is 1/2 of the pie.

Question 5.
Andy cut a tuna sandwich and a chicken sandwich into a total of 15 same-size pieces. He cut the tuna sandwich into 9 more pieces than the chicken sandwich. Andy ate 8 pieces of the tuna sandwich. What fraction of the tuna sandwich did he eat?
\(\frac{□}{□}\)

Answer:
\(\frac{2}{3}\)

Explanation:
Let x be the number of pieces of the chicken sandwich so that x + 9 is the number of pieces of a tuna sandwich.
There is a total of 15 same-size pieces. So, we can write as
x + (x + 9) = 15
2x + 9 = 15
2x = 6
x = 3.
This means that there ate 3 + 9 = 12 pieces of a tuna sandwich. Since Andy ate 8, then this corresponds to a fraction of 8/12 = 2/3.

Question 6.
Luke threw balls into these buckets at a carnival. The number on the bucket gives the number of points for each throw. What is the least number of throws needed to score exactly 100 points? Explain.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 13
_____ throws

Answer:
13 throws

Explanation:
Take the maximum number to get the minimum throws = 9 X 10 = 90.
6 X 1 = 6; 2 X 2 = 4.
Add 90 + 6 + 4 = 100;
So, the least number of throws needed to score exactly 100 points = 10 + 1 + 2 = 13.

Question 7.
Victoria arranges flowers in vases at her restaurant. In each arrangement, \(\frac{2}{3}\) of the flowers are yellow. What other fractions can represent the part of the flowers that are yellow? Shade the models to show your work.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 14
\(\frac{□}{□}\)

Answer:
chapter 6
\(\frac{2}{3}\), \(\frac{8}{12}\), \(\frac{40}{60}\)

Explanation:
Basically, any fraction obtained by multiplying both the numerator and denominator by the same value would be an equivalent fraction:
2/3 = 2/3 * 4/4 = 8/12
8/12 = 8/12 * 5/5 = 40/60
etc.

Common Core – Find Equivalent Fractions – Page No. 355

Question 1.
Miranda is braiding her hair. Then she will attach beads to the braid. She wants \(\frac{1}{3}\) of the beads to be red. If the greatest number of beads that will fit on the braid is 12, what other fractions could represent the part of the beads that are red?
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Find Equivalent Fractions img 15

Answer:
\(\frac{2}{6}\), \(\frac{3}{9}\), \(\frac{4}{12}\)

Explanation:
Miranda is braiding her hair. Then she will attach beads to the braid. She wants \(\frac{1}{3}\) of the beads to be red. If the greatest number of beads that will fit on the braid is 12.
\(\frac{1}{3}\) X \(\frac{2}{2}\) = \(\frac{2}{6}\)
\(\frac{1}{3}\) X \(\frac{3}{3}\) = \(\frac{3}{9}\)
\(\frac{1}{3}\) X \(\frac{4}{4}\) = \(\frac{4}{12}\)

Question 2.
Ms. Groves has trays of paints for students in her art class. Each tray has 5 colors. One of the colors is purple. What fraction of the colors in 20 trays is purple?
\(\frac{□}{□}\)

Answer:
\(\frac{20}{100}\) or \(\frac{1}{5}\)

Explanation:
If you have 20 trays that are 100 colors with 20 being purple. 20/ 100 is 1/5

Question 3.
Miguel is making an obstacle course for field day. At the end of every sixth of the course, there is a tire. At the end of every third of the course, there is a cone. At the end of every half of the course, there is a hurdle. At which locations of the course will people need to go through more than one obstacle?
Type below:
_________

Answer:
\(\frac{1}{3}\), \(\frac{1}{2}\), \(\frac{2}{3}\) and final locations

Explanation:
We have three fractions with different denominators: sixths, thirds, and halves.
The first step is to make all the denominators equal for 1/6, 1/3, 1/2.
In this case, we want sixths since LCM(2, 3, 6) = 6
since 1/3 = 2/6, and 1/2 = 3/6. Now we can start solving.
1. There are six tires at the following: 1/6, 2/6, 3/6, 4/6, 5/6, and 6/6.
2. There are three cones at the following (G.C.F.): 2/6 (or 1/3), 4/6 (or 2/3), and 6/6 (or 3/3).
3. There are two hurdles at the following (G.C.F.): 3/6 (or 1/2) and 6/6 (or 2/2).
We look for common numbers.
1. On 2/6, there are two obstacles: a tire and a cone.
2. On 3/6, there are two obstacles: a tire and a hurdle.
3. On 4/6, there are two obstacles: a tire and a cone.
4. At 6/6, there are three obstacles: a tire, cone, and a hurdle.
2/6 = 1/3
3/6 = 1/2
4/6 = 2/3
6/6 = 1
The answers are 1/3, 1/2, 2/3, and 1.

Question 4.
Preston works in a bakery where he puts muffins in boxes. He makes the following table to remind himself how many blueberry muffins should go in each box.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Find Equivalent Fractions img 16
How many blueberry muffins should Preston put in a box with 36 muffins?
_________

Answer:
12 blueberry muffins

Explanation:
Preston works in a bakery where he puts muffins in boxes. He makes the following table to remind himself how many blueberry muffins should go in each box.
So, he had 2 blueberry muffins out of 6 muffins.
2/6 X 2/2 = 4/12. 4 blueberry muffins out of 12 muffins.
2/6 X 4/4 = 8/24. 8 blueberry muffins out of 24 muffins.
2/6 X 6/6 = 12/36. 12 blueberry muffins out of 36 muffins.

Common Core – Find Equivalent Fractions – Page No. 356

Question 1.
A used bookstore will trade 2 of its books for 3 of yours. If Val brings in 18 books to trade, how many books can she get from the store?
Options:
a. 9
b. 12
c. 18
d. 27

Answer:
b. 12

Explanation:
A used bookstore will trade 2 of its books for 3 of yours. If Val brings in 18 books to trade 2/3 X 6/6 = 12/18, she get 12 books

Question 2.
Every \(\frac{1}{2}\) hour Naomi stretches her neck; every \(\frac{1}{3}\) hour she stretches her legs; and every \(\frac{1}{6}\) hour she stretches her arms. Which parts of her body will Naomi stretch when \(\frac{2}{3}\) of an hour has passed?
Options:
a. neck and legs
b. neck and arms
c. legs and arms
d. none

Answer:
c. legs and arms

Explanation:
Summing \(\frac{1}{2}\)‘s only gives integer values giving 1, 2, 3, 4…or
integer values +\(\frac{1}{2}\) and 0 + \(\frac{1}{2}\) = \(\frac{1}{2}\), 1 \(\frac{1}{2}\), 2 \(\frac{1}{2}\)…
So neck is excluded
Every \(\frac{1}{3}\): \(\frac{1}{3}\) + \(\frac{1}{2}\) = \(\frac{2}{3}\)
Legs will be stretched at \(\frac{2}{3}\) hour
Every \(\frac{1}{6}\): \(\frac{1}{6}\) + \(\frac{1}{6}\) + \(\frac{1}{6}\) + \(\frac{1}{6}\) = \(\frac{4}{6}\)
Divide top and bottom by 2 giving:
(4 ÷ 2)/(6 ÷ 2) = \(\frac{2}{3}\)
Arms will be stretched at latex]\frac{2}{3}[/latex] hour

Question 3.
At the beginning of the year, the Wong family car had been driven 14,539 miles. At the end of the year, their car had been driven 21,844 miles. How many miles did the Wong family drive their car during that year?
Options:
a. 6,315 miles
b. 7,295 miles
c. 7,305 miles
d. 36,383 miles

Answer:
c. 7,305 miles

Explanation:
If at the beginning of the year, the Wong family’s car had driven 14539 miles and at the end of the year, it had driven 21844 miles, then subtract 14539 from 21844 to determine the difference between the two values, which will tell you how many miles the Wong family drove their car for during the year.
21844 – 14539 = 7305 miles

Question 4.
Widget Company made 3,600 widgets in 4 hours. They made the same number of widgets each hour. How many widgets did the company make in one hour?
Options:
a. 80
b. 90
c. 800
d. 900

Answer:
d. 900

Explanation:

3,600 widgets in 4 hours therefore 3,600 / 4 for one hour = 900 widgets 900 widgets in one hour.

Question 5.
Tyler is thinking of a number that is divisible by 2 and by 3. By which of the following numbers must Tyler’s number also be divisible?
Options:
a. 6
b. 8
c. 9
d. 12

Answer:
a. 6

Explanation:
The number 6 is divisible by 2 and by 3.

Question 6.
Jessica drew a circle divided into 8 equal parts. She shaded 6 of the parts. Which fraction is equivalent to the part of the circle that is shaded?
Options:
a. \(\frac{2}{3}\)
b. \(\frac{3}{4}\)
c. \(\frac{10}{16}\)
d. \(\frac{12}{18}\)

Answer:
b. \(\frac{3}{4}\)

Explanation:
Jessica drew a circle divided into 8 equal parts. She shaded 6 of the parts.
6/8 = 3/4

Page No. 357

Choose the best term from the box.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 17

Question 1.
________ name the same amount.
________

Answer:
Equivalent Fractions

Question 2.
A _________ is a common multiple of two or more denominators
________

Answer:
Common Denominator

Write two equivalent fractions.

Question 3.
\(\frac{2}{5}\)
Type below:
________

Answer:
\(\frac{4}{10}\) and \(\frac{6}{15}\)

Explanation:
Two equivalent fractions of 2/5
Multiply the 2/5 with 2
(2 x 2)/(5 x 2) = 4/10
Multiply the 2/5 with 3
(2 x 3)/(5 x 3) = 6/15
So, the equivalent fractions of 2/5 are 4/10 and 6/15

Question 4.
\(\frac{1}{3}\)
Type below:
________

Answer:
\(\frac{2}{6}\) and \(\frac{3}{9}\)

Explanation:
Two equivalent fractions of 1/3
Multiply the 1/3 with 2
(1 x 2)/(3 x 2) = 2/6
Multiply the 1/3 with 3
(1 x 3)/(3 x 3) = 3/9
So, the equivalent fractions of 1/3 are 2/6 and 3/9

Question 5.
\(\frac{3}{4}\)
Type below:
________

Answer:
\(\frac{6}{8}\) and \(\frac{9}{12}\)

Explanation:
Two equivalent fractions of 3/4
Multiply the 3/4 with 2
(3 x 2)/(4 x 2) = 6/8
Multiply the 3/4 with 3
(3 x 3)/(4 x 3) = 9/12
So, the equivalent fractions of 3/4 are 6/8 and 9/12

Tell whether the fractions are equivalent. Write = or ≠.

Question 6.
\(\frac{2}{3}\) ______ \(\frac{4}{12}\)

Answer:
\(\frac{2}{3}\) ≠ \(\frac{4}{12}\)

Explanation:
2/ 3
Multiply the numerator and denominator of 2/3 with 2
(2 x 2)/(3 x 2) = 4/6
So, 2/3 ≠ 4/12

Question 7.
\(\frac{5}{6}\) ______ \(\frac{10}{12}\)

Answer:
\(\frac{5}{6}\) =_ \(\frac{10}{12}\)

Explanation:
5/6
Multiply the 5/6 with 2
(5 x 2)/(6 x 2) = 10/12
So, 5/6 = 10/12

Question 8.
\(\frac{1}{4}\) ______ \(\frac{4}{8}\)

Answer:
\(\frac{1}{4}\) ≠ \(\frac{4}{8}\)

Explanation:
1/4
Multiply the numerator and denominator of 1/4 with 4
(1 x 4)/(4 x 4) = 4/16
So, 1/4 ≠ 4/8

Write the fraction in simplest form.

Question 9.
\(\frac{6}{8}\)
\(\frac{□}{□}\)

Answer:
\(\frac{3}{4}\)

Explanation:
6/8
Divide the numerator and denominator of 6/8 with 2
(6 ÷ 2)/( 8 ÷ 2) = 3/4
The simplest form of 6/8 is 3/4

Question 10.
\(\frac{25}{100}\)
\(\frac{□}{□}\)

Answer:
\(\frac{1}{4}\)

Explanation:
25/100
Divide the numerator and denominator of 25/100 with 25
(25 ÷ 25)/( 100 ÷ 25) = 1/4
The simplest form of 25/100 is 1/4

Question 11.
\(\frac{8}{10}\)
\(\frac{□}{□}\)

Answer:
\(\frac{4}{5}\)

Explanation:
8/10
Divide the numerator and denominator of 8/10 with 2
(8 ÷ 2)/( 10 ÷ 2) = 4/5
The simplest form of 8/10 is 4/5

Write the pair of fractions as a pair of fractions with a common denominator.

Question 12.
\(\frac{3}{10} \text { and } \frac{2}{5}\)
Type below:
_________

Answer:
\(\frac{3}{10} \text { and } \frac{4}{10}\)

Explanation:
3/ 10 and 2/5
List the multiples of 10 = 10, 20, 30, 40, 50, …
List the multiples of 5 = 5, 10, 15, 20, 25, 30, …
Common denominator of 3/10 and 2/5 = 10
Multiply the 3/10 and 2/5 with 10
(3 x 10)/(10 x 10) and (2 x 10)/(5 x 10)
3/ 10 and 4/10
Pair of fractions of 3/10 and 2/5 are 3/10 and 4/10

My Homework Lesson 6 Compare and Order Fractions Answer Key Question 13.
\(\frac{1}{3} \text { and } \frac{3}{4}\)
Type below:
_________

Answer:
\(\frac{3}{12} \text { and } \frac{9}{12}\)

Explanation:
1/3 and 3/4
List the multiples of 3 = 3, 6, 9, 12, 15, 18, …
List the multiples of 4 = 4, 8, 12, 16, 20, ….
The common denominator of 1/3 and 3/4 are 12
Multiply the 1/3 and 3/4 with 12
(1 x 12)/(3 x 12) and (3 x 12)/(4 x 12)
3/ 12 and 9/12.
Pair of fractions of 1/3 and 3/4 are 3/12 and 9/12

Page No. 358

Question 14.
Sam needs \(\frac{5}{6}\) cup mashed bananas and \(\frac{3}{4}\) cup mashed strawberries for a recipe. He wants to find out whether he needs more bananas or more strawberries. How can he write \(\frac{5}{6}\) and \(\frac{3}{4}\) as a pair of fractions with a common denominator?
Type below:
_________

Answer:
\(\frac{10}{12}\) and \(\frac{9}{12}\)

Explanation:
Sam needs 5/6 cup mashed bananas and 3/4 cup mashed strawberries for a recipe
He wants to find out whether he needs more bananas or strawberries
List the multiples of 6 = 6, 12, 18, 24, 30, 36, 42,…..
List the multiples of 4 = 4, 8, 12, 16, 20, 24, ….
The common denominator of 6 and 4 is 12
Multiply the numerator and denominator of 5/6 and 3/4 with 12
(5 x 12)/(6 x 12) and (3 x 12)/(4 x 12)
10/12 and 9/12
Pair of fractions with a common denominator for 5/6 and 3/4 are 10/12 and 9/12

Question 15.
Karen will divide her garden into equal parts. She will plant corn in \(\frac{8}{12}\) of the garden. What is the fewest number of parts she can divide her garden into?
______ parts

Answer:
\(\frac{2}{3}\) parts

Explanation:
As per the given data,
Keren will divide her garden into equal parts
She will plant corn in 8/12 of the garden
To get the least number of parts she can divide her garden, simplify the 8/12
Divide the numerator and denominator of 8/12 with 4
(8 ÷ 4)/(12 ÷ 4) = 2/3
So, Karen can divide her garden into 2/3 of parts

Question 16.
Olivia is making scarves. Each scarf will have 5 rectangles, and \(\frac{2}{5}\) of the rectangles will be purple. How many purple rectangles does she need for 3 scarves?
______ purple rectangles

Answer:
6 purple rectangles

Explanation:
As per the given data,
Olivia is making scarves
Each scarf will have 5 rectangles and 2/5 of the rectangles will be purple = 5 x 2/5 = 2
That means each scarf will have 2 purple rectangles
For 3 scarves = 3 x 2 = 6
So, she needs 6 purple rectangles.

Question 17.
Paul needs to buy \(\frac{5}{8}\) pound of peanuts. The scale at the store measures parts of a pound in sixteenths. What measure is equivalent to \(\frac{5}{8}\) pound?
\(\frac{□}{□}\) pound of peanuts

Answer:
\(\frac{10}{16}\) pound of peanuts

Explanation:
As per the given data,
Paul needs to buy 5/8 pounds of peanuts
The scale at the store measures parts of a pound in sixteenths = 16 x 5/8 = 10
To find an Equivalent fraction of 5/8
Multiply the numerator and denominator of 5/8 with 2
(5 x 2)/( 8 x 2) = 10/16
So, the equivalent fraction of 5/8 is 10/16

Page No. 361

Question 1.
Compare \(\frac{2}{5}\) and \(\frac{1}{8}\). Write < or >.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 18
\(\frac{2}{5}\) _____ \(\frac{1}{8}\)

Answer:
\(\frac{2}{5}\) > \(\frac{1}{8}\)

Explanation:
Least common denominator of 5 and 8 = 40
Multiply the numerator and denominator of 2/5 and 1/8 with 40
2/ 5 = (2 x 8)/(5 x 8) = 16/40
1/8 = (1 x 5)/(8 x 5) = 5/40
The denominators are the same now
So, compare the numerator to find the greater number
16/40 > 5/40
So, 2/5 > 1/8

Compare. Write < or >.

Question 2.
\(\frac{1}{2}\) _____ \(\frac{4}{6}\)

Answer:
\(\frac{1}{2}\) < \(\frac{4}{6}\)

Explanation:
1/2 and 4/6
Least common denominator of 2 and 6 = 6
Multiply the numerator and denominator of 1/2 and 4/6 with 6
1/ 2 = (1 x 6)/(2 x 6) = 6/12
4/ 6 = (4x 2)/(6 x 2) = 8/12
The denominators are the same now
So, compare the numerator to find the greater number.
6/12 < 8/12
So, 1/2 < 4/6

Question 3.
\(\frac{3}{10}\) _____ \(\frac{1}{2}\)

Answer:
\(\frac{3}{10}\) > \(\frac{1}{2}\)

Explanation:
1 / 10 and 1/2
The least common denominator of 10 and 2 = 10
Multiply the numerator and denominator of 3/10 and 1/2 by 10
3/ 10 = (3 x 2)/(10 x 2) = 6/20
1/2 = (1 x 10)/(2 x 10) = 10/20
The denominators are the same now
So, compare the numerator to find the greater number.
6/20 < 10/20
So, 3/10 > 1/2

Question 4.
\(\frac{11}{12}\) _____ \(\frac{4}{8}\)

Answer:
\(\frac{11}{12}\) > \(\frac{4}{8}\)

Explanation:
11/12 and 4/8
Least common denominator of 12 and 8 = 24
Multiply the numerator and denominator of 11/12 and 4/8 with 24
11/ 12 = (11 x 8)/(12 x 8) = 88/96
4/8 = (4 x 12)/(8 x 12) = 48/96
The denominators are the same now
So, compare the numerator to find the greater number
88/96 > 48/96
So, 11/12 > 4/8

Practice and Homework Lesson 6.6 Answer Key Question 5.
\(\frac{5}{8}\) _____ \(\frac{2}{5}\)

Answer:
\(\frac{5}{8}\) > \(\frac{2}{5}\)

Explanation:
5/ 8 and 2/5
Least common denominator of 5 and 8 = 40
Multiply the numerator and denominator of 5/8 and 2/8 with 40
5/ 8 = (5 x 5)/(8 x 5) = 25/40
2/5 = (2 x 8)/(5 x 8) = 16/40
The denominators are same now
So, compare the numerator to find the greater number
25/ 40 > 16/40
So, 5/8 > 2/5

Question 6.
\(\frac{8}{10}\) _____ \(\frac{3}{8}\)

Answer:
\(\frac{8}{10}\) > \(\frac{3}{8}\)

Explanation:
8/10 and 3/8
Least common denominator of 10 and 8 = 40
Multiply the numerator and denominator of 8/10 and 3/8 with 40
8/ 10 = (8 x 8)/(10 x 8) = 64/80
3/8 = (3 x 10)/(8 x 10) = 30/80
The denominators are same now
So, compare the numerator to find the greater number
64/80 > 30/80
So, 8/10 > 3/8

Question 7.
\(\frac{1}{3}\) _____ \(\frac{7}{12}\)

Answer:
\(\frac{1}{3}\) < \(\frac{7}{12}\)

Explanation:
1/3 and 7/12
Least common denominator of 3 and 12 = 12
Multiply the numerator and denominator of 1/3 and 7/12 with 40.
1/ 3 = (1 x 12)/(3 x 12) = 12/36
7/12 = (7 x 3)/(12 x 3) = 21/36
The denominators are same now
So, compare the numerator to find the greater number
12/36 < 21/36
So, 1/3 < 7/12

Question 8.
\(\frac{2}{6}\) _____ \(\frac{7}{8}\)

Answer:
\(\frac{2}{6}\) < \(\frac{7}{8}\)

Explanation:
2/6 and 7/8
Least common denominator of 6 and 8 = 24
Multiply the numerator and denominator of 2/6 and 7/8 with 40
2/ 6 = (2 x 8)/(6 x 8) = 16/48
7/8 = (7 x 6)/(8 x 6) = 42/48
The denominators are same now
So, compare the numerator to find the greater number
16/48<42/48
So, 2/6 < 7/8

Question 9.
\(\frac{4}{8}\) _____ \(\frac{2}{10}\)

Answer:
\(\frac{4}{8}\) > \(\frac{2}{10}\)

Explanation:
4/8 and 2/10
Least common denominator of 8 and 10 = 40
Multiply the numerator and denominator of 4/8 and 2/10 with 40
4/ 8 = (4 x 10)/(8 x 10) = 40/80
2/10 = (2 x 8)/(10 x 8) = 16/80
The denominators are same now
So, compare the numerator to find the greater number
40/80 > 16/80
So, 4/8 > 2/10

Reason Quantitatively Algebra Find a numerator that makes the statement true.

Question 10.
\(\frac{2}{4}<\frac { □ }{ 6 } \)
□ = _____

Answer:
4

Explanation:
2/4 < x/6
Least common denominator of 4 and 6 = 12
Multiply the numerator and denominator of 2/4 < x/6 with 40
2/4 = (2 x 6)/(4 x 6) = 12/24
x/6 = (x x 4)/(6 x 4) = 4 x/24
The denominators are same now
So, compare the numerator to find the greater number
12/24 < 4 X 4/24

Question 11.
\(\frac{8}{10}>\frac { □ }{ 8 } \)
□ = _____

Answer:
1

Explanation:
8/10 < x/8
Least common denominator of 10 and 8 = 40
8/10 = (8 x 4)/(10 x 4) = 32/40
x/8 = (x X 5)/(8 x 5) = 5x/40
The denominators are same now
So, compare the numerator to find the greater number
8/10 < 5x/40. X will be 1

Question 12.
\(\frac{10}{12}>\frac { □ }{ 4 } \)
□ = _____

Answer:
1

Explanation:
10/12 < x/4
Least common denominator of 12 and 4 = 12
10/12 = (10 x 1)/(12 x 1) = 10/12
x/4 = (x X 3)/(4 x 3) = 3x/12
The denominators are same now
So, compare the numerator to find the greater number
10/12 < 3/12. X will be 1.

Question 13.
\(\frac{2}{5}<\frac { □ }{ 10 } \)
□ = _____

Answer:
5

Explanation:
2/5 < x/10
Least common denominator of 5 and 10 = 10
2/5 = (2x 2)/(5 x 2) = 4/10
x/10 = (x X 1)/(10 x 1) = x/10
The denominators are same now
So, compare the numerator to find the greater number
2/5 < 5/10. X will be 5.

Question 14.
When two fractions are between 0 and \(\frac{1}{2}\), how do you know which fraction is greater? Explain.
Type below:
_______

Answer:
When two fractions are between 0 and \(\frac{1}{2}\). \(\frac{1}{2}\) is greater. As the tenths place of 5 is greater than 0. \(\frac{1}{2}\) is greater.

Question 15.
If you know that \(\frac{2}{6}<\frac{1}{2}\) and \(\frac{3}{4}<\frac{1}{2}\), what do you know about \(\frac{2}{6} \text { and } \frac{3}{4}\)?
Type below:
_______

Answer:

Explanation:
As per the given data,
2/6 < 1/2 and 3/4 < 1/2
Then, 2/6 and 3/4 is
The least common denominator of 6 and 4 is 12
(2 x 4)/(6 x 4) and (3 x 6)/(4 x 6)
8/24 and 18/24
Now, the denominators are same, then compare the numerators
8/24 > 18/24
So, 2/6 > 3/4

Question 16.
Sandra has ribbons that are \(\frac{3}{4}\) yard, \(\frac{2}{6}\) yard, \(\frac{1}{5}\) yard, and \(\frac{4}{7}\) yard long. She needs to use the ribbon longer than \(\frac{2}{3}\) yard to make a bow. Which length of ribbon could she use for the bow?
\(\frac{□}{□}\) yard

Answer:

Explanation:

Page No. 362

Question 17.
Saundra ran \(\frac{7}{12}\) of a mile. Lamar ran \(\frac{3}{4}\) of a mile. Who ran farther? Explain.
_______

Answer:
As per the given data,
Saundra ran 7/12 of a mile
Lamar ran 3/4 of a mile
The least common denominator of 7/12 and 3/4 is 12
(7x 1)/( 12 x 1) and ( 3 x 3 )/( 4 x 3)
7/12 and 9/12
So, 7/12 < 9/12
So, 7/12 < 3/4
Lamar ran greater distance than Saundra

Question 18.
What’s the Question? Selena ran farther than Manny.
Type below:
_______

Answer:
Who ran farther? Selena or Manny

Go Math Grade 4 Practice Book Pdf Lesson 6.6 Question 19.
Chloe made a small pan of ziti and a small pan of lasagna. She cut the ziti into 8 equal parts and the lasagna into 9 equal parts. Her family ate \(\frac{2}{3}\) of the lasagna. If her family ate more lasagna than ziti, what fraction of the ziti could have been eaten?
Type below:
_______

Answer:
\(\frac{1}{4}\)

Explanation:
As per the given data,
Chloe made a small pan of ziti and a small pan of lasagna
She cut the ziti into 8 equal parts and the lasagna into 9 equal parts
Her family ate 2/3 of the lasagna = (2/3) x 9 = 6 parts
If her family ate more lasagna than ziti, then that is less than 6 parts
So, 1/4 of the ziti = (1/4) x 8 = 2 parts
So, 1/4 of the ziti eaten by Chloe’s family

Question 20.
James, Ella, and Ryan biked around Eagle Lake. James biked \(\frac{2}{10}\) of the distance in an hour. Ella biked \(\frac{4}{8}\) of the distance in an hour. Ryan biked \(\frac{2}{5}\) of the distance in an hour. Compare the distances biked by each person by matching the statements to the correct symbol. Each symbol may be used more than once or not at all.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 19
Type below:
_______

Answer:
2/10 < 4/8
1 / 8 > 2/5
2/10 < 2/5

Explanation:
As per the given data,
James, Ella, and Ryan biked around eagle lake
James biked 2/10 of the distance in an hour
Ella biked 4/8 of the distance in an hour
Ryan biked 2/5 of the distance in an hour
Least common denominator of 2 /10, 4/8, and 2/5 is 40
(2x 4)/(10 x 4), (4 x 5)/(8 x 5), and (2 x 8)/(5 x 8)
8/40, 20/ 40, and 16/ 40
8/40 < 16/40 < 20/40
2/10 < 2/5 < 4/8
So, 2/10 < 4/8
1 / 8 > 2/5
2/10 < 2/5

Common Core – Compare Fractions Using Benchmarks – Page No. 363

Compare. Write < or > .

Question 1.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Compare Fractions Using Benchmarks img 20

Answer:
\(\frac{1}{8}\) < \(\frac{6}{10}\)

Explanation:
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Compare Fractions Using Benchmarks img 20

Question 2.
\(\frac{4}{12}\) _______ \(\frac{4}{6}\)

Answer:
\(\frac{4}{12}\) < \(\frac{4}{6}\)

Explanation:
4/12 and 4/6
4/12 is less than 1/2
4/6 is greater than 1/2
So, 4/12 < 4/6

Question 3.
\(\frac{2}{8}\) _______ \(\frac{1}{2}\)

Answer:
\(\frac{2}{8}\) < \(\frac{1}{2}\)

Explanation:
2/8 and 1/2
2/8 is less than 1/2
1/2 is equal to 1/2
So, 2/8 < 1/2

Question 4.
\(\frac{3}{5}\) _______ \(\frac{3}{3}\)

Answer:
\(\frac{3}{5}\) < \(\frac{3}{3}\)

Explanation:
3/5 and 3/3
3/5 is greater than 1/2
3/3 is equal to 1
So, 3/5 < 3/3

Question 5.
\(\frac{7}{8}\) _______ \(\frac{5}{10}\)

Answer:
\(\frac{7}{8}\) > \(\frac{5}{10}\)

Explanation:
7/8 and 5/10
7/8 is greater than 1/2
5/10 is equal to 1/2
So, 5/10 < 7/8

Question 6.
\(\frac{9}{12}\) _______ \(\frac{1}{3}\)

Answer:
\(\frac{9}{12}\) > \(\frac{1}{3}\)

Explanation:
9/12 and 1/3
9/ 12 is greater than 1/2
1/3 is less than 1/2
1/3 < 9/12

Question 7.
\(\frac{4}{6}\) _______ \(\frac{7}{8}\)

Answer:
\(\frac{4}{6}\) < \(\frac{7}{8}\)

Explanation:
4/6 and 7/8
4/6 is greater than 1/2
7/8 is closer to 1
So, 4/6 < 7/8

Question 8.
\(\frac{2}{4}\) _______ \(\frac{2}{3}\)

Answer:
\(\frac{2}{4}\) < \(\frac{2}{3}\)

Explanation:
2/4 and 2/3
2/4 is equal to 1/2
2/3 is greater than 1/2
So, 2/4 < 2/3

Question 9.
\(\frac{3}{5}\) _______ \(\frac{1}{4}\)

Answer:
\(\frac{3}{5}\) > \(\frac{1}{4}\)

Explanation:
3/5 and 1/4
3/5 is greater than 1/2
1/4 is less than 1/2
So, 1/4 < 3/5

Question 10.
\(\frac{6}{10}\) _______ \(\frac{2}{5}\)

Answer:
\(\frac{6}{10}\) > \(\frac{2}{5}\)

Explanation:
6/10 and 2/5
6/10 is greater than 1/2
2/5 is less than 1/2
So, 2/5 < 6/10

Question 11.
\(\frac{1}{8}\) _______ \(\frac{2}{10}\)

Answer:
\(\frac{1}{8}\) < \(\frac{2}{10}\)

Explanation:
1/8 and 2/10
1/8 is less than 1/2
2/10 is less than 1/2 but greater than 1/8
So, 1/8 < 2/10

Question 12.
\(\frac{2}{3}\) _______ \(\frac{5}{12}\)

Answer:
\(\frac{2}{3}\) > \(\frac{5}{12}\)

Explanation:
2/3 and 5/12
2/3 is greater than 1/2
5/12 is less than 1/2
So, 5/12 < 2/3

Question 13.
\(\frac{4}{5}\) _______ \(\frac{5}{6}\)

Answer:
\(\frac{4}{5}\)< \(\frac{5}{6}\)

Explanation:
4/5 and 5/6
4/5 is greater than 1/2
5/6 is greater than 1/2
Common denominator is 30
(4×6)/(5×6) and (5×5)/(6×5)
24/30 and 25/30
24/30 < 25/30
So, 4/5 < 5/6

Question 14.
\(\frac{3}{5}\) _______ \(\frac{5}{8}\)

Answer:
\(\frac{3}{5}\) < \(\frac{5}{8}\)

Explanation:
3/5 and 5/8
3/5 is greater than 1/2
5/8 is greater than 1/2
Common denominator is 40
(3×8)/(5×8) and (5×5)/(8×5)
24/40 and 25/ 40
24/40 < 25/40
3/5 < 5/8

Question 15.
\(\frac{8}{8}\) _______ \(\frac{3}{4}\)

Answer:
\(\frac{8}{8}\) > \(\frac{3}{4}\)

Explanation:
8/8 and 3/4
8/8 is equal to 1
3/4 is less than 1
3/4 < 8/8

Question 16.
Erika ran \(\frac{3}{8}\) mile. Maria ran \(\frac{3}{4}\) mile. Who ran farther?
_________

Answer:
Maria

Explanation:
As per the data,
Erika ran 3/8 mile
Maria ran 3/4 mile
Multiply the numerator and denominator of 3/4 with 2
(3×2)/(4×2) = 6/8
3/8 < 6/8
So, 3/8 < 3/4
So, Maria ran faster than Erika

Lesson 6.8 Compare and Order Fractions Question 17.
Carlos finished \(\frac{1}{3}\) of his art project on Monday. Tyler finished \(\frac{1}{2}\) of his art project on Monday. Who finished more of his art project on Monday?
_________

Answer:
Tyler

Explanation:
From the given data,
Carlos finished 1/3 of his art project on Monday
Tyler finished ½ of his art project on Monday
1/3 is less than 1/2
1/2 is equal to 1/2
So, 1/3 < 1/2
Then, Tyler finished more of his work on Monday

Common Core – Compare Fractions Using Benchmarks – Page No. 364

Question 1.
Which symbol makes the statement true?
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Compare Fractions Using Benchmarks img 21
Options:
a. >
b.<
c. =
d. none

Answer:
a. >

Explanation:
4/6 ? 3/8
By comparing 4/6 with 1/2, 4/6 > 1/2
By comparing 3/8 with 1/2, 3/8 < 1/2
So, 4/6 > 3/8

Question 2.
Which of the following fractions is greater than \(\frac{3}{4}\)?
Options:
a. \(\frac{1}{4}\)
b. \(\frac{5}{6}\)
c. \(\frac{3}{8}\)
d. \(\frac{2}{3}\)

Answer:
b. \(\frac{5}{6}\)

Explanation:
From the given data,
By comparing the 3/4 with 1/2, 3/4 > 1/2
Same as above, compare the options with ½
a. 1/4 < 1/2
b. 5/6 > 1/2
c. 3/8 < 1/2
d. 2/3 > 1/2
5/6 and 2/3 are greater than the 1/2
So, compare the 5/6 with 2/3
Then, 5/6 > 2/3
So, 5/6 > 3/4

Question 3.
Abigail is putting tiles on a tabletop. She needs 48 tiles for each of the 8 rows. Each row will have 6 white tiles. The rest of the tiles will be purple. How many purple tiles will she need?
Options:
a. 432
b. 384
c. 336
d. 48

Answer:
c. 336

Explanation:
As per the given data
Abigail is putting tiles on a tabletop
Number of rows = 8
She needs 48 tiles for each row = 48×8 = 384
Number of white tiles per row = 6×8 = 48
Rest of the tiles will be purple = 384 – 48 =336
So, the total number of purple color tiles = 336

Question 4.
Each school bus going on the field trip holds 36 students and 4 adults. There are 6 filled buses on the field trip. How many people are going on the field trip?
Options:
a. 216
b. 240
c. 256
d. 360

Answer:
b. 240

Explanation:
From the given data,
Each school bus going on the field trip holds 36 students and 4 adults
There are 6 filled buses on the field trip
6 x (36 + 4) = 6 x 40 = 240
So, the total number of people on the field trip = 240

Question 5.
Noah wants to display his 72 collector’s flags. He is going to put 6 flags in each row. How many rows of flags will he have in his display?
Options:
a. 12
b. 15
c. 18
d. 21

Answer:
a. 12

Explanation:
As mentioned in the data,
Noah wants to display his 72 collector’s flag
He is going to put 6 flags in each row = 6x = 72
X = 12
So, a total 12 number of rows of flags will have on his display

Question 6.
Julian wrote this number pattern on the board:
3, 10, 17, 24, 31, 38.
Which of the numbers in Julian’s pattern are composite numbers?
Options:
a. 3, 17, 31
b. 10, 24, 38
c. 10, 17, 38
d. 17, 24, 38

Answer:
b. 10, 24, 38

Explanation:
As per the given information
Julian wrote his number pattern on the board =3, 10, 17, 24, 31, 38
Factors of 3 = 1,3
Factors of 10 = 1,2,5,10
Factors of 17 = 1, 17
Factors of 24 = 1, 2, 3, 4, 6
Factors of 31 = 1, 31
Factors of 38 = 1, 2, 19, 38
So, the composite number is 10, 24, and 38, which numbers have more than 2 factors

Page No. 367

Question 1.
Compare \(\frac{2}{5}\) and \(\frac{1}{10}\).
Think: Use ______ as a common denominator.
\(\frac{2}{5}=\frac { □×□ }{ □×□ } \) = \(\frac{□}{□}\)
\(\frac{1}{10}\)
Think: 4 tenth-size parts Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 22 1 tenth-size part.
\(\frac{2}{5}\) _____ \(\frac{1}{10}\)

Answer:
\(\frac{2}{5}\) > \(\frac{1}{10}\)

Explanation:
Compare 2/5 and 1/10
Think: 10 as common denominator
Multiply the numerator and denominator of 2/5 with 2
Then, (2×2) ÷ (5×2) = 4/10
Now, compare the 4/10 with 1/10
4/10 > 1/10
So, 2/5 > 1/10

Question 2.
Compare \(\frac{6}{10}\) and \(\frac{3}{4}\).
Think: Use ______ as a common denominator.
\(\frac{6}{10}\)
\(\frac{3}{4}=\frac { □×□ }{ □×□ } \) = \(\frac{□}{□}\)
Think: A tenth-size part Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 23 an eighth-size part.
\(\frac{6}{10}\) _____ \(\frac{3}{4}\)

Answer:
\(\frac{6}{10}\) < \(\frac{3}{4}\)

Explanation:
Compare 6/10 and 3/4
Think: Use 40 as a common denominator
So, multiply the denominator and numerator of 3/4 with 10
That is, (3×10) ÷ (4×10) = 30/40
Multiply the numerator and denominator of 6/10 with 4
That is, (6×4) ÷ (10×4) = 24/40
Denominators are same, compare the numerator values of 24/40 and 30/40
So, 24/40 < 30/40
Then, 6/10 < 3/4

Compare. Write <, >, or =.

Question 3.
\(\frac{7}{8}\) _____ \(\frac{2}{8}\)

Answer:
\(\frac{7}{8}\) > \(\frac{2}{8}\)

Explanation:
Compare 7/8 and 2/8
Denominator values are same but numerator values are different
Now, compare the numerator values of 7/8 and 2/8
Then, 7/8 > 2/8

Question 4.
\(\frac{5}{12}\) _____ \(\frac{3}{6}\)

Answer:
\(\frac{5}{12}\) < \(\frac{3}{6}\)

Explanation:
Compare 5/12 and 3/6
Multiply the numerator and denominator of 3/6 with 2
(3×2) ÷ (6×2) = 6/12
So, 5/12 < 6/12

Question 5.
\(\frac{4}{10}\) _____ \(\frac{4}{6}\)

Answer:
\(\frac{4}{10}\) < \(\frac{4}{6}\)

Explanation:
Compare 4/10 and 4/6
Multiply the numerator and denominator of 4/6 with 10
(4×10) ÷ (6×10) = 40/60
Multiply the numerator and denominator of 4/10 with 6
(4×6) ÷ (10×6) = 24/60
So, 24/60 < 40/60
Then, 4/10 < 4/6

Question 6.
\(\frac{6}{12}\) _____ \(\frac{2}{4}\)

Answer:
\(\frac{6}{12}\) = \(\frac{2}{4}\)

Explanation:
Compare 6/12 and 2/4
Multiply the numerator and denominator of 2/4 with 3
(2×3) ÷ (4×3) = 6/12
So, 6/12 = 6/12
Then, 6/12 = 2/4

Question 7.
\(\frac{1}{3}\) _____ \(\frac{1}{4}\)

Answer:
\(\frac{1}{3}\) < \(\frac{1}{4}\)

Explanation:
Compare 1/3 and 1/4
Multiply the numerator and denominator of 1/3 with 4
(1×4) ÷ (3×4) = 4/12
Multiply the numerator and denominator of 1/4 with 3
(1×3) ÷ (4×3) = 3/12
So, 4/12 < 3/12
Then, 1/3 < 1/4

Question 8.
\(\frac{4}{5}\) _____ \(\frac{8}{10}\)

Answer:
\(\frac{4}{5}\) = \(\frac{8}{10}\)

Explanation:
Compare 4/5 and 8/10
Multiply the numerator and denominator of 4/5 with 2
(4×2) ÷ (5×2) = 8/10
So, 8/10 = 8/10
Then, 4/5 = 8/10

Question 9.
\(\frac{3}{4}\) _____ \(\frac{2}{6}\)

Answer:
\(\frac{3}{4}\) < \(\frac{2}{6}\)

Explanation:
Compare 3/4 and 2/6
Multiply the numerator and denominator of 3/4 with 6
(3×6) ÷ (4×6) = 18/24
Multiply the numerator and denominator of 2/6 with 4
(2×4) ÷ (6×4) = 8/24
So, 18/24 < 8/24
Then, 3/4 < 2/6

Question 10.
\(\frac{1}{2}\) _____ \(\frac{5}{8}\)

Answer:
\(\frac{1}{2}\) < \(\frac{5}{8}\)

Explanation:
Compare 1/2 and 5/8
Multiply the numerator and denominator of 1/2 with 4
(1×4) ÷ (2×4) = 4/8
So, 4/8 < 5/8
Then, 1/2 < 5/8

Reason Quantitatively Algebra Find a number that makes the statement true.

Question 11.
\(\frac{1}{2}>\frac { □ }{ 3 } \)
□ = ______

Answer:
1

Explanation:
1/2 > x/3
Multiply the numerator and denominator of 1/2 with 3
(1×3) ÷ (2×3) = 3/6
Multiply the numerator and denominator of x/3 with 2
(Xx2) ÷ (3×2) = 2x/6
3/6 > 2x/6
So, x= 1
Then, 3/6 > 2/6
1/2 > 1/3

Question 12.
\(\frac{3}{10}>\frac { □ }{ 5 } \)
□ = ______

Answer:
1

Explanation:
3/10 > x/5
Multiply the numerator and denominator of x/5 with 2
(Xx2) ÷ (5×2) =2x/10
3/10 > 2x/10
So, x=1
3/10 > 2/10
3/10 > 1/5

Question 13.
\(\frac{5}{12}>\frac { □ }{ 3 } \)
□ = ______

Answer:
1

Explanation:
5/12 > x/3
Multiply numerator and denominator of x/3 with 4
(Xx4) ÷(3×4) = 4x/12
5/12 > 4x/12
So, x = 1
Then, 5/12 > 4/12
5/12 > 1/3

Question 14.
\(\frac{2}{3}>\frac { 4 }{ □ } \)
□ = ______

Answer:

Explanation:

Question 15.
Students cut a pepperoni pizza into 12 equal slices and ate 5 slices. They cut a veggie pizza into 6 equal slices and ate 4 slices. Use fractions to compare the amounts of each pizza that were eaten.
Type below:
_________

Answer:
\(\frac{5}{12}\) < \(\frac{4}{6}\)

Explanation:
As per the given data,
Students cut a pepperoni pizza into 12 equal slices and ate 5 slices
=5/12
They cut veggie pizza into 6 equal slices and ate 4 slices = 4/6
Compare 5/12 and 4/6
Multiply the numerator and denominator of 4/6 with 2
(4×2) ÷ (6×2) = 8/12
So, 5/12 < 8/12
Then, 5/12 < 4/6

Page No. 368

Question 16.
Jerry is making a strawberry smoothie. Which measure is greatest, the amount of milk, cottage cheese, or strawberries?
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 24
a. What do you need to find?
Type below:
_________

Answer:
I need to find the greatest measure from milk, cottage cheese, or strawberries

Question 16.
b. How will you find the answer?
Type below:
_________

Answer:
Equal the denominators of 3/4, 2/6, and 8/12
Multiply the numerator and denominator of 3/4 with 3
(3×3) ÷ (4×3) = 9/12
Multiply the numerator and denominator of 2/6 with 2
(2×2) ÷ (6×2) = 4/12
Compare 4/12 < 8/12 < 9/12
So, 2/6 < 8/12 <3/4

Question 16.
c. Show your work.
Type below:
_________

Answer:
2/6 < 8/12 < 3/4

Question 16.
d. Jerry needs more ________ than the other two ingredients.
________

Answer:
Jerry needs more strawberries than the other two ingredients

Question 17.
Angie, Blake, Carlos, and Daisy went running. Angie ran \(\frac{1}{3}\) mile, Blake ran \(\frac{3}{5}\) mile, Carlos ran \(\frac{7}{10}\) mile, and Daisy ran \(\frac{1}{2}\) mile. Which runner ran the shortest distance? Who ran the greatest distance?
The shortest distance: ________
The greatest distance: ________

Answer:
The shortest distance: \(\frac{1}{3}\)
The greatest distance: \(\frac{7}{10}\)

Explanation:
As per the given data,
Angie, Blake, Carlos, and Daisy went running
Angie ran 1/3 mile, Blake ran 3/5 mile, Carlos ran 7/10 mile, and Daisy ran 1/2 mile
Least common denominator of 1/3, 3/5, 7/10, and 1/2 =30
(1x 10)/(3×10), (3×6)/(5×6), (7×3)/(10×3), (1×15)/(2×15)
10/30, 18/30, 21/30, 15/30
10/30 < 15/30 < 18/30 < 21/30
1/3 < 1/2 < 3/5 < 7/10
The shortest distance ran by Angie and that is 1/ 3
The greatest distance ran by Carlos and that is 7/10

Question 18.
Elaine bought \(\frac{5}{8}\) pound of potato salad and \(\frac{4}{6}\) pound of macaroni salad for a picnic. Use the numbers to compare the amounts of potato salad and macaroni salad Elaine bought.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 25
Type below:
_________

Answer:
As per the given data,
Elaine bought 5/8 pound of potato salad and 4/6 pound of macaroni salad for a picnic
Multiply the numerator and denominator of 5/8 with 6
(5×6) / (8×6) = 30/48
Multiply the numerator and denominator of 4/6 with 8
(4×8) / (6×8) = 32/48
30/48 < 32/48
So, 5/8 < 4/6
Elaine bought more macaroni salad than potato salad

Common Core – Compare Fractions – Page No. 369

Compare. Write <, >, or =

Question 1.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Compare Fractions img 26

Answer:
\(\frac{1}{5}\) < \(\frac{2}{10}\)

Explanation:
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Compare Fractions img 26

Question 2.
\(\frac{1}{5}\) _____ \(\frac{2}{10}\)

Answer:
\(\frac{1}{5}\) = \(\frac{2}{10}\)

Explanation:
1/5 and 2/10
Think: 10 is a common denominator
1/5 = (1×2) / (5×2) = 2/10
2/10 = 2/10
So, 1/5 = 2/10

Question 3.
\(\frac{2}{4}\) _____ \(\frac{2}{5}\)

Answer:
\(\frac{2}{4}\) > \(\frac{2}{5}\)

Explanation:
2/4 and 2/5
20 is a common denominator
2/4 = (2×5)/(4×5) = 10/20
2/5 = (2×4)/(5×4) = 8/20
10/20 > 8/20
So, 2/4 > 2/5

Question 4.
\(\frac{3}{5}\) _____ \(\frac{7}{10}\)

Answer:
\(\frac{3}{5}\) < \(\frac{7}{10}\)

Explanation:
3/5 and 7/10
10 is a common denominator
3/5 = (3×2)/(5×2) = 6/10
7/10
6/10 < 7/10
So, 3/5 < 7/10

Question 5.
\(\frac{4}{12}\) _____ \(\frac{1}{6}\)

Answer:
\(\frac{4}{12}\) > \(\frac{1}{6}\)

Explanation:
4/12 and 1/6
12 is a common denominator
4/12
1/6 = (1×2)/(6×2) = 2/12
4/12 > 2/12
So, 4/12 > 1/6

Question 6.
\(\frac{2}{6}\) _____ \(\frac{1}{3}\)

Answer:
\(\frac{2}{6}\) = \(\frac{1}{3}\)

Explanation:
2/6 and 1/3
6 is a common denominator
2/6
1/3 = (1×2)/(3×2) = 2/6
So, 2/6 =2/6
So, 2/6 = 1/3

Question 7.
\(\frac{1}{3}\) _____ \(\frac{2}{4}\)

Answer:
\(\frac{1}{3}\) < \(\frac{2}{4}\)

Explanation:
1/3 and 2/4
12 is a common denominator
1/3 = (1×4)/(3×4) = 4/12
2/4 = (2×3)/(4×3) = 6/12
4/12 < 6/12
So, 1/3 < 2/4

Question 8.
\(\frac{2}{5}\) _____ \(\frac{1}{2}\)

Answer:
\(\frac{2}{5}\) < \(\frac{1}{2}\)

Explanation:
2/5 and 1/2
10 is a common denominator
2/5 = (2×2)/(5×2) = 4/10
1/2 = (1×5)/(2×5) = 5/10
4/10 < 5/10
So, 2/5 < 1/2

Question 9.
\(\frac{4}{8}\) _____ \(\frac{2}{4}\)

Answer:
\(\frac{4}{8}\) = \(\frac{2}{4}\)

Explanation:
4/8 and 2/4
8 is a common denominator
4/8
2/4 = (2×2)/(4×2) = 4/8
2/4 = 4/8
So, 4/8 = 2/4

Question 10.
\(\frac{7}{12}\) _____ \(\frac{2}{4}\)

Answer:
\(\frac{7}{12}\) < \(\frac{2}{4}\)

Explanation:
7/12 and 2/4
12 is a common denominator
7/12
2/4 = (2×3)/(4×3) = 6/12
7/12 < 6/12
So, 7/12 < 2/4

Question 11.
\(\frac{1}{8}\) _____ \(\frac{3}{4}\)

Answer:
\(\frac{1}{8}\) <  \(\frac{3}{4}\)

Explanation:
1/8 and 3/4
8 is a common denominator
1/8
3/4 = (3×2)/(4×2) = 6/8
1/8 < 6/8
So, 1/8 < 3/4

Question 12.
A recipe uses \(\frac{2}{3}\) of flour and \(\frac{5}{8}\) cup of blueberries. Is there more flour or more blueberries in the recipe?
more _____

Answer:
flour

Explanation:
From the given data,
A recipe uses 2/3 of flour and 5/8 cup of blueberries
Common denominator is 24
2/3 = (2×8)/(3×8) = 16/24
5/8 = (5×3)/(8×3) = 15/24
16/24 > 15/24
So, 2/3 > 5/8
So, flour is more in the recipe

Question 13.
Peggy completed \(\frac{5}{6}\) of the math homework and Al completed \(\frac{4}{5}\) of the math homework. Did Peggy or Al complete more of the math homework?
_________

Answer:
Peggy completed more work than Al

Explanation:
As per the given data,
Peggy completed 5/6 of the math homework
A1 completed 4/5 of the math homework
30 is a common denominator
5/6 = (5×5)/(6×5) = 25/30
4/5 = (4×6)/(5×6) =24/30
25/30 > 24/30
So, 5/6 > 4/5
So, Peggy completed more work than Al

Common Core – Compare Fractions – Page No. 370

Question 1.
Pedro fills a glass \(\frac{2}{4}\) full with orange juice. Which of the following fractions is greater than \(\frac{2}{4}\)?
Options:
a. \(\frac{3}{8}\)
b. \(\frac{4}{6}\)
c. \(\frac{5}{12}\)
d. \(\frac{1}{3}\)

Answer:
b. \(\frac{4}{6}\)

Explanation:
\(\frac{4}{6}\) > \(\frac{2}{4}\)

Question 2.
Today Ian wants to run less than \(\frac{7}{12}\) mile. Which of the following distances is less than \(\frac{7}{12}\) mile?
Options:
a. \(\frac{3}{4}\) mile
b. \(\frac{2}{3}\) mile
c. \(\frac{5}{6}\) mile
d. \(\frac{2}{4}\) mile

Answer:
d. \(\frac{2}{4}\) mile

Explanation:
\(\frac{2}{4}\) is less than \(\frac{7}{12}\)

Question 3.
Ms. Davis traveled 372,645 miles last year on business. What is the value of 6 in 372,645?
Options:
a. 6
b. 60
c. 600
d. 6,000

Answer:
c. 600

Explanation:
Ms. Davis traveled 372, 645 miles last year on business
The value of 6 in 372,645 is 600

Question 4.
One section of an auditorium has 12 rows of seats. Each row has 13 seats. What is the total number of seats in that section?
Options:
a. 25
b. 144
c. 156
d. 169

Answer:
c. 156

Explanation:
From the given information
One section of an auditorium has 12 rows of seats
Each row has 13 seats = 13×12 = 156 seats
So, the total number of seats in the auditorium = 156 seats

Question 5.
Sam has 12 black-and-white photos and 18 color photos. He wants to put the photos in equal rows so each row has either black-and-white photos only or color photos only. In how many rows can Sam arrange the photos?
Options:
a. 1, 2, 3, or 6 rows
b. 1, 3, 6, or 9 rows
c. 1, 2, or 4 rows
d. 1, 2, 3, 4, 6, or 9 rows

Answer:
a. 1, 2, 3, or 6 rows

Explanation:
As per the given information
Sam has 12 black and white photos 18 color photos
He wants to put the photos in equal rows
So each row has either black and white photos only or color photos only
H.C.F of 12 and 18 is 6
Rows of 6.
2 rows of black equal 12.
3 rows of white equals 18.

Question 6.
The teacher writes \(\frac{10}{12}\) on the board. He asks students to write the fraction in simplest form. Who writes the correct answer?
Options:
a. JoAnn writes \(\frac{10}{12}\)
b. Karen writes \(\frac{5}{12}\)
c. Lynn writes \(\frac{6}{5}\)
d. Mark writes \(\frac{5}{6}\)

Answer:
d. Mark writes \(\frac{5}{6}\)

Explanation:
As per the given data,
The teacher writes 10/12 on the board
He asks students to write the fraction in simplest form
For the simplest form of 10/12, divide the 10/12 with 2
(10÷2)/(12÷2) = 5/6
5/6 is the simplest form of 10/12
So, Mark writes the correct answer

Page No. 373

Question 1.
Locate and label points on the number line to help you write \(\frac{3}{10}, \frac{11}{12}, \text { and } \frac{5}{8}\) in order from least to greatest.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 27
Type below:
___________

Answer:
chapter 6 - compare fractions and order fractions- image1

Explanation:
3/10, 11/12, 5/8
3/10 is closer to 0
11/12 is closer to 1
5/8 is closer to 1/2
So, 3/10 < 5/8 < 11/12

Write the fraction with the greatest value.

Question 2.
\(\frac{7}{10}, \frac{1}{5}, \frac{9}{10}\)
\(\frac{□}{□}\)

Answer:
\(\frac{9}{10}\)

Explanation:
7/10, 1/5, and 9/10
7/10 is closer to 1/2
1/5 is closer to 0
9/10 is closer to 1
So, 9/10 > 7/10 > 1/5
Greatest value is 9/10

Question 3.
\(\frac{5}{6}, \frac{7}{12}, \frac{7}{10}\)
\(\frac{□}{□}\)

Answer:
\(\frac{5}{6}\)

Explanation:
7/12 is less than 1/2
7/10 and 5/6 are greater than 1/2
Compare 5/6 and 7/12
Multiply the numerator and denominator of 5/6 with 2
(5×2)/(6×2) = 10/12 > 7/12
So, 5/6 > 7/12
Compare 5/6 and 7/10
Multiply the 5/6 with 10
(5×10)/(6×10) = 50/60
Multiply the 7/10 with 6
(7×6)/(10×6) = 42/60
So, 5/6> 7/10
So, 7/12 <7/10<5/6

Question 4.
\(\frac{2}{8}, \frac{1}{8}, \frac{2}{4}, \frac{2}{6}\)
\(\frac{□}{□}\)

Answer:
\(\frac{2}{4}\)

Explanation:
2/8, 1/8, 2/4, 2/6
Common denominator of 4,6,8 = 24
(2×3)/(8×3), (1×3)/(8×3), (2×6)/(4×6), (2×4)/(6×4)
6/24, 3/24, 12/24, 8/24
Compare the numerator values
12/24 > 8/24 > 6/24 > 3/24
So, 2/4 > 2/6 > 2/8 >1/8

Write the fractions in order from least to greatest.

Question 5.
\(\frac{1}{4}, \frac{3}{6}, \frac{1}{8}\)
\(\frac{□}{□}\)
Type below:
________

Answer:
\(\frac{1}{8}, \frac{3}{6}, \frac{1}{4}\)

Explanation:
1/4, 3/6, 1/8
1/ 4 is closer to 1/2
3/6 is equal to 1/2
1/8 is closer to 0
So, 1/8 < 3/6 < 1/4

Question 6.
\(\frac{3}{5}, \frac{2}{3}, \frac{3}{10}, \frac{4}{5}\)
\(\frac{□}{□}\)
Type below:
________

Answer:
\(\frac{4}{5}, \frac{3}{10}, \frac{3}{5}, \frac{2}{3}\)

Explanation:
3/5, 2/3, 3/10, 4/5
3/5 is closer to 1/2
2/3 is greater than 1/2
3/10 is less than 1/2
4/5 is closer to 0
So, 4/5 < 3/10 < 3/5 < 2/3

Question 7.
\(\frac{3}{4}, \frac{7}{12}, \frac{5}{12}\)
\(\frac{□}{□}\)
Type below:
________

Answer:
\(\frac{5}{12}, \frac{7}{12}, \frac{3}{4}\)

Explanation:
3/4, 7/12, 5/12
3/ 4 is closer to 1
7/12 is greater than 1/2
5/ 12 is closer to 1/2
So, 5/12 < 7/12 < 3/4

Write the fractions in order from least to greatest.

Question 8.
\(\frac{2}{5}, \frac{1}{3}, \frac{5}{6}\)
\(\frac{□}{□}\)
Type below:
________

Answer:
\(\frac{1}{3}, \frac{2}{5}, \frac{5}{6}\)

Explanation:
2/5, 1/3, 5/6
2/5 is closer to 1/2
1/3 is closer to 0
5/6 is closer to 1
So, 1/3 < 2/5 < 5/6

Question 9.
\(\frac{4}{8}, \frac{5}{12}, \frac{1}{6}\)
\(\frac{□}{□}\)
Type below:
________

Answer:
\(\frac{1}{6}, \frac{5}{12}, \frac{4}{8}\)

Explanation:
4/8, 5/12, 1/6
4/8 is equal to1/2
5/12 is closer to 1/2
1/6 is closer to 0
So, 1/6 < 5/12 < 4/ 8

Question 10.
\(\frac{7}{100}, \frac{9}{10}, \frac{4}{5}\)
\(\frac{□}{□}\)
Type below:
________

Answer:
\(\frac{7}{100}, \frac{4}{5}, \frac{9}{10}\)

Explanation:
7/100, 9/10, 4/5
7/100 is closer to 0
9/10 is closer to 1
4/5 is greater than 1/2
So, 7/100 < 4/5 < 9/10

Reason Quantitatively Algebra Write a numerator that makes the statement true.

Question 11.
\(\frac{1}{2}<\frac { □ }{ 10 } <\frac{4}{5}\)
□ = _____

Answer:
6 or 7

Explanation:
1/2 < x/10 < 4/5
Common denominator is 10
(1×5)/(2×5) < x/10 < (4×2)/(5×2)
5/10 < x/10 < 8/10
Then, x = 6 or 7

Question 12.
\(\frac{1}{4}<\frac{5}{12}<\frac { □ }{ 6 } \)
□ = _____

Answer:
6

Explanation:
1/4 < 5/12 < x/6
Common denominator is 24
(1×6)/(4×6) < (5×2)/(12×2) < 4x/(6×4)
6/24 < 10/24 < 4x/24
If x = 6, then 4x = 24
So, 6/24 < 10/24 < 24/24

Question 13.
\(\frac { □ }{ 8 } <\frac{3}{4}<\frac{7}{8}\)
□ = _____

Answer:
1,2,3,4,5

Explanation:
x/8 < 3/4 < 7/8
Common denominator is 8
x/8 < (3×2)/(4×2) < 7/8
x/8 < 6/8 < 7/8
so x = 1,2,3,4,5

Page No. 374

Question 14.
Nancy, Lionel, and Mavis ran in a 5-kilometer race. The table shows their finish times. In what order did Nancy, Lionel, and Mavis finish the race?
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 28
a. What do you need to find?

Answer:
In which Nancy, Lionel, and Mavis finished the race?

Question 14.
b. What information do you need to solve the problem?
Type below:
_________

Answer:
the amount of time it took each runner to finish the race

Question 14.
c. What information is not necessary?
Type below:
_________

Answer:
the distance of the race

Question 14.
d. How will you solve the problem?
Type below:
_________

Answer:
By using the running race time of Nancy, Lionel, and Mavis

Question 14.
e. Show the steps to solve the problem.
Type below:
_________

Answer:
Common denominator of 2/3, 7/12, 3/4 is 12
(2×4)/(3×4), (7/12), (3×3)/(4×3)
8/12, 7/12, 9/12
7/12 < 8/12 < 9/12
7/12 < 2/3 < 3/4
Lionel < Nancy < Mavis

Question 14.
f. Complete the sentences.
The runner who finished first is _______.
The runner who finished second is _______.
The runner who finished third is _______.
The first: _______
The second: _______
The third: _______

Answer:
Lionel finished the race first
Nancy finished the race second
Mavis finished the race third
Lionel
Nancy
Mavis

Common Core – Compare and Order Fractions – Page No. 375

Write the fractions in order from least to greatest.

Question 1.
\(\frac{5}{8}, \frac{2}{12}, \frac{8}{10}\)
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Compare and Order Fractions img 29

Answer:
\(\frac{2}{12}, \frac{5}{8}, \frac{8}{10}\)

Explanation:
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison Common Core Compare and Order Fractions img 29

Question 2.
\(\frac{1}{5}, \frac{2}{3}, \frac{5}{8}\)
Type below:
_________

Answer:
\(\frac{1}{5}, \frac{5}{8}, \frac{2}{3}\)

Explanation:
chapter 6 - compare fractions and order fractions- image4
1/5, 2/3, 5/8
1/5 is closer to 0
2/3 is greater than 1/2
5/8 greater than 1/2
1/5 < 5/8 < 2/3

Question 3.
\(\frac{1}{2}, \frac{2}{5}, \frac{6}{10}\)
Type below:
_________

Answer:
\(\frac{2}{5}, \frac{1}{2}, \frac{6}{10}\)

Explanation:
chapter 6 - compare fractions and order fractions- image5
1/2, 2/5, 6/10
1/2 is equal to 1/2
2/5 is less than 1/2
6/10 is greater than 1/2

Question 4.
\(\frac{4}{6}, \frac{7}{12}, \frac{5}{10}\)
Type below:
_________

Answer:
\(\frac{5}{10}\) < \(\frac{7}{12}\) < \(\frac{4}{6}\)

Explanation:
chapter 6 - compare fractions and order fractions- image6
4/6, 7/12, 5/10
4/6 is closer to 1
7/12 is greater than 1/2
5/10 is equal to 1/2

Question 5.
\(\frac{1}{4}, \frac{3}{6}, \frac{1}{8}\)
Type below:
_________

Answer:
\(\frac{1}{8}\) < \(\frac{1}{4}\) < \(\frac{3}{6}\)

Explanation:
chapter 6 - compare fractions and order fractions- image7
1/4, 3/6, 1/8
1/4 is less than 1/2
3/6 is equal to 1/2
1/8 is closer to 0

Question 6.
\(\frac{1}{8}, \frac{3}{6}, \frac{7}{12}\)
Type below:
_________

Answer:
\(\frac{1}{8}\) < \(\frac{7}{12}\) < \(\frac{3}{6}\)

Explanation:
chapter 6 - compare fractions and order fractions- image8
1/8, 3/6, 7/12
1/8 is closer to 0
3/6 is equal to 1/2
7/12 is greater than 1/2

Question 7.
\(\frac{8}{100}, \frac{3}{5}, \frac{7}{10}\)
Type below:
_________

Answer:
\(\frac{8}{100}\) < \(\frac{3}{5}\) < \(\frac{7}{10}\)

Explanation:
chapter 6 - compare fractions and order fractions- image9
8/100, 3/5, 7/10
8/100 is closer to 0
3/5 is greater than 1/2
7/10 is closer to 1

Question 8.
\(\frac{3}{4}, \frac{7}{8}, \frac{1}{5}\)
Type below:
_________

Answer:
\(\frac{1}{5}\) < \(\frac{3}{4}\) < \(\frac{7}{8}\)

Explanation:
chapter 6 - compare fractions and order fractions- image10
3/4, 7/8, 1/5
3/4 is greater than 1/2
7/8 is closer to 1
1/5 is closer to 0

Question 9.
Amy’s math notebook weighs \(\frac{1}{2}\) pound, her science notebook weighs \(\frac{7}{8}\) pound, and her history notebook weighs \(\frac{3}{4}\) pound. What are the weights in order from lightest to heaviest?
Type below:
_________

Answer:
\(\frac{1}{2}\) pound, \(\frac{3}{4}\) pound, \(\frac{7}{8}\) pound

Explanation:
From the given data,
Amy’s math notebook weighs 1/2 pound
Science notebook weighs 7/8 pound
History notebook weighs 3/4 pound
7/8 is closer to 1
3/4 is greater than 1/2
1/2 < 3/4 < 7/8
So, Amy’s math notebook weight < history notebook weight < science notebook

Question 10.
Carl has three picture frames. The thicknesses of the frames are \(\frac{4}{5}\) inch, \(\frac{3}{12}\) inch, and \(\frac{5}{6}\) inch. What are the thicknesses in order from least to greatest?
Type below:
_________

Answer:
\(\frac{3}{12}\) inch, \(\frac{4}{5}\) inch, \(\frac{5}{6}\) inch

Explanation:
As per the given data,
Carl has three picture frames
The thickness of the frames are 4/5 inch, 3/12 inch, 5/6 inch
4/5 is greater than 1/2
3/12 is less than 1/2
5/6 is closer to 1
3/12 < 4/5 < 5/6

Common Core – Compare and Order Fractions – Page No. 376

Question 1.
Juan’s three math quizzes this week took him \(\frac{1}{3}\) hour, \(\frac{4}{6}\) hour, and \(\frac{1}{5}\) hour to complete. Which list shows the lengths of time in order from least to greatest?
Options:
a. \(\frac{1}{3}\) hour, \(\frac{4}{6}\) hour, \(\frac{1}{5}\) hour
b. \(\frac{1}{5}\) hour, \(\frac{1}{3}\) hour, \(\frac{4}{6}\) hour
c. \(\frac{1}{3}\) hour, \(\frac{1}{5}\) hour, \(\frac{4}{6}\) hour
d. \(\frac{4}{6}\) hour, \(\frac{1}{3}\) hour, \(\frac{1}{5}\) hour

Answer:
b. \(\frac{1}{5}\) hour, \(\frac{1}{3}\) hour, \(\frac{4}{6}\) hour

Explanation:
From the given information
Juan’s three math quizzes this week took him 1/3 hour, 4/6 hour, and 1/5 hour
Compare 1/3 and 1/2
1/3 is less than 1/2
4/6 is greater than 1/2
1/5 is closer to 0
1/5 < 1/3 < 4/6
So, Juan’s math quizzes times from least to greatest is 1/5, 1/3, 4/6

Question 2.
On three days last week, Maria ran \(\frac{3}{4}\) mile, \(\frac{7}{8}\) mile, and \(\frac{3}{5}\) mile. What are the distances in order from least to greatest?
Options:
a. \(\frac{3}{4}\) mile, \(\frac{7}{8}\) mile, \(\frac{3}{5}\) mile
b. \(\frac{3}{5}\) mile, \(\frac{3}{4}\) mile, \(\frac{7}{8}\) mile
c. \(\frac{7}{8}\) mile, \(\frac{3}{4}\) mile, \(\frac{3}{5}\) mile
d. \(\frac{7}{8}\) mile, \(\frac{3}{5}\) mile, \(\frac{3}{4}\) mile

Answer:
b. \(\frac{3}{5}\) mile, \(\frac{3}{4}\) mile, \(\frac{7}{8}\) mile

Explanation:
As per the information
On three days last week, Maria ran 3/4 mile, 7/8 mile, and 3/5 mile
3/4 is greater than 1/2
7/8 is closer to 1
3/5 is greater than 1/2
Compare 3/5 and 3/4
3/4 is greater than 3/5
So, 3/5 < 3/4 < 7/8
Distance from least to greatest is 3/5, 3/4 , 7/8

Question 3.
Santiago collects 435 cents in nickels. How many nickels does he collect?
Options:
a. 58
b. 78
c. 85
d. 87

Answer:
d. 87

Explanation:
As per the given data,
Santiago collects 435 cents in nickels
1 nickel worth is 5 cents
Then, nickels per 435 cents = 435/5 = 87
So, Santiago collects 87 nickels

Question 4.
Lisa has three classes that each last 50 minutes. What is the total number of minutes the three classes last?
Options:
a. 15 minutes
b. 150 minutes
c. 153 minutes
d. 156 minutes

Answer:
b. 150 minutes

Explanation:
From the given data,
Lisa has three classes that each last 50 minutes
The total number of minutes the three classes last = 3×50 =150 minutes

Question 5.
Some students were asked to write a composite number. Which student did NOT write a composite number?
Options:
a. Alicia wrote 2.
b. Bob wrote 9.
c. Arianna wrote 15.
d. Daniel wrote 21.

Answer:
a. Alicia wrote 2.

Explanation:
As per the information
Some students were asked to write a composite number
a. Alicia wrote 2
Factors of 2 is 1 and 2
b. Bob wrote 9
Factors of 9 is 1, 3, 9
c. Arianna wrote 15
Factors of 15 is 1, 3, 5, 15
d. Daniel wrote 21
Factors of 21 is 1,3,7,21
So, Alicia did not write a composite number

Question 6.
Mrs. Carmel serves \(\frac{6}{8}\) of a loaf of bread with dinner. Which fraction is equivalent to \(\frac{6}{8}\)?
Options:
a. \(\frac{2}{4}\)
b. \(\frac{9}{16}\)
c. \(\frac{2}{3}\)
d. \(\frac{3}{4}\)

Answer:
d. \(\frac{3}{4}\)

Explanation:
As per the given information
Mrs. Carmel serves 6/8 of a loaf of bread with dinner
To find the equivalent fraction of 6/8, simplify the 6/8 by dividing with the 2
(6÷2)/(8÷2) = ¾
So, the equivalent fraction of 6/8 is 3/4

Page No. 377

Question 1.
For numbers 1a–1d, tell whether the fractions are equivalent by selecting the correct symbol.
a. \(\frac{4}{16}\) _____ \(\frac{1}{4}\)

Answer:
\(\frac{4}{16}\) = \(\frac{1}{4}\)

Explanation:
4/16 and 1/4
Divide the numerator and denominator of 4/16 with 4
(4÷4)/(16÷4) = 1/4
So, 4/16 = 1/4

Question 1.
b. \(\frac{3}{5}\) _____ \(\frac{12}{15}\)

Answer:
\(\frac{3}{5}\) ≠ \(\frac{12}{15}\)

Explanation:
3/5 and 12/15
Multiply the numerator and denominator of 3/5 with 3
(3×3)/(5×3) = 9/15
So, 3/5 ≠ 12/15

Question 1.
c. \(\frac{5}{6}\) _____ \(\frac{25}{30}\)

Answer:
\(\frac{5}{6}\) = \(\frac{25}{30}\)

Explanation:
c. 5/6 and 25/30
Multiply the numerator and denominator of 5/6 with 5
(5×5)/(6×5) = 25/30
So, 5/6 = 25/30

Question 1.
d. \(\frac{6}{10}\) _____ \(\frac{5}{8}\)

Answer:
\(\frac{6}{10}\) ≠ \(\frac{5}{8}\)

Explanation:
6/10 and 5/8
Divide the numerator and denominator of 6/10 with 2
(6÷2)/(10÷2) = 3/5
6/10 ≠5/8

Question 2.
Juan’s mother gave him a recipe for trail mix.
\(\frac{3}{4}\) cup cereal \(\frac{2}{3}\) cup almonds
\(\frac{1}{4}\) cup peanuts \(\frac{1}{2}\) cup raisins
Order the ingredients used in the recipe from least to greatest.
Type below:
_________

Answer:
As per the given data,
Juan’s mother gave him a recipe for trail mix
3/4 cup cereal and 2/3 cup almonds
1/4 cup peanuts and 1/2 cup raisins
3/4 is closer to 1
2/3 is greater than 1/2
1/4 is less than 1/2
1/2 is equal to 1/2
So, 1/4 < 1/2 <2/3 < 3/4
So, Jaun’s mother gave him a recipe for trail mix in order
1/4 cup of peanuts < 1/2 cup of raisins < 2/3 cup almonds < 3/4 cup of cereals

Question 3.
Taylor cuts \(\frac{1}{5}\) sheet of construction paper for an arts and crafts project. Write \(\frac{1}{5}\) as an equivalent fraction with the denominators shown.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 30
Type below:
_________

Answer:
From the given data,
Taylor cuts 1/5 sheet of construction paper for an arts and crafts project
So, the equivalent fractions of 1/5
Multiply the numerator and denominator of 1/5 with 2
(1×2)/(5×2) = 2/10
Multiply the numerator and denominator of 1/5 with 3
(1×3)/(5×3) = 3/15
Multiply the numerator and denominator of 1/5 with 5
(1×5)/(5×5) = 5/25
Multiply the numerator and denominator of 1/5 with 8
(1×8)/(5×8) = 8/40
So, the equivalent fractions of 1/5 are 2/10, 3/15, 5/25, 8/40

Question 4.
A mechanic has sockets with the sizes shown below. Write each fraction in the correct box.
\(\frac{7}{8} in. \frac{3}{16} in. \frac{1}{4} in. \frac{3}{8} in. \frac{4}{8} in. \frac{11}{16} in.\)
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 31
Type below:
_________

Answer:
chapter 6 - compare fractions and order fractions- image11

Explanation:
As per the given data,
A mechanic has sockets with the sizes 7/8 inch, 3/16 inch, 1/4 inch, 3/8 inch, 4/8 inch, 11/16 inch
7/8 is greater than 1/2
3/16 is less than 1/2
1/4 is less than 1/2
3/8 is less than 1/2
4/8 is equal to 1/2
11/16 is greater than 1/2

Page No. 378

Question 5.
Darcy bought \(\frac{1}{2}\) pound of cheese and \(\frac{3}{4}\) pound of hamburger for a barbecue. Use the numbers to compare the amounts of cheese and hamburger Darcy bought.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 32

Answer:
grade 4 chapter 6 image 3

Explanation:
From the given data,
Darcy bought 1/2 pound of cheese and 3/4 pound of hamburger for a barbecue
3/4 is greater than 1/2

Question 6.
Brad is practicing the piano. He spends \(\frac{1}{4}\) hour practicing scales and \(\frac{1}{3}\) hour practicing the song for his recital. For numbers 6a–6c, select Yes or No to tell whether each of the following is a true statement.
a. 12 is a common denominator of \(\frac{1}{4}\) and \(\frac{1}{3}\).
i. yes
ii. no

Answer:
i. yes

Explanation:
12 is a common denominator of 1/3 and 1/4

Question 6.
b. The amount of time spent practicing scales can be rewritten as \(\frac{3}{12}\).
i. yes
ii. no

Answer:
i. yes

Explanation:
b. The amount of time spent practicing scales can be rewritten as 3/12
Multiply the numerator and denominator of 1/4 with 3
(1×3)/(4×3) = 3/12
Yes, amount of time spent practicing scales can be rewritten as 3/12

Question 6.
c. The amount of time spent practicing the song for the recital can be rewritten as \(\frac{6}{12}\).
i. yes
ii. no

Answer:
ii. no

Explanation:
c. The amount of time spent practicing the song for the recital can be rewritten as 6/12
The amount of time spent practicing for the song for his recital = 1/3
Multiply the numerator and denominator of 1/3 with 4
(1×4)/(3×4) = 4/12
No, time spent practicing the song for the recital can not be written as 6/12

Question 7.
In the school chorus, \(\frac{4}{24}\) of the students are fourth graders. In simplest form, what fraction of the students in the school chorus are fourth graders?
\(\frac{□}{□}\)

Answer:
\(\frac{1}{6}\)

Explanation:
As per the given information,
In the school chorus,
4/24 of the students are fourth graders
For the simplest form of 4/24
Divide the numerator and denominator of 4/24 with 4
(4÷4)/(24÷4) =1/6
The simplest form of 4/24 is 1/6

Question 8.
Which pairs of fractions are equivalent? Mark all that apply.
a. \(\frac{8}{12} \text { and } \frac{2}{3}\)
b. \(\frac{3}{4} \text { and } \frac{20}{24}\)
c. \(\frac{4}{5} \text { and } \frac{12}{16}\)
d. \(\frac{7}{10} \text { and } \frac{21}{30}\)

Answer:
a. \(\frac{8}{12} \text { and } \frac{2}{3}\)

Explanation:
a. 8/12 and 2/3
Multiply the numerator and denominator of 2/3 with 4
(2×4)/(3×4) = 8/12
So, 8/12 = 2/3
b. 3/4 and 20/24
Multiply the numerator and denominator of 3/4 with 6
(3×6)/(4×6) = 18/24
c. 4/5 and 12/16
4/5 ≠ 12/16
d. 7/10 and 21/30
Multiply the numerator and denominator of 7/10 with 3
(7×3)/(10×3) =21/30
So, 7/10 = 21/30

Question 9.
Sam worked on his science fair project for \(\frac{1}{4}\) hour on Friday and \(\frac{1}{2}\) hour on Saturday. What are four common denominators for the fractions? Explain your reasoning.

Answer:
From the given data,
Sam worked on his science fair project for 1/4 hour on Friday and 1/2 hour on Saturday
4,8,12,16 are all common denominators because they all multiples of 2 and 4

Page No. 379

Question 10.
Morita works in a florist shop and makes flower arrangements. She puts 10 flowers in each vase, and \(\frac{2}{10}\) of the flowers are daisies.
Part A
If Morita makes 4 arrangements, how many daisies does she need? Show how you can check your answer.
_____ daisies

Answer:
8 daisies

Explanation:
If Morita makes 4 arrangements, 4 X 2 = 8.

Question 10.
Part B
Last weekend, Morita used 10 daisies to make flower arrangements. How many flowers other than daisies did she use to make the arrangements? Explain your reasoning.
_____ other flowers

Answer:
40 other flowers

Explanation:
If she used 10 daises, she must have made 5 arrangements. In each vase, she put \(\frac{2}{10}\) of the flowers are daisies. So, remaining flowers for each vase = 10 – 2 = 8. If she made 5 arrangements, 8 X 5 = 40 other flowers.

Question 11.
In Mary’s homeroom, \(\frac{10}{28}\) of the students have a cat, \(\frac{6}{12}\) have a dog, and \(\frac{2}{14}\) have a pet bird. For numbers 11a–11c, select True or False for each statement.
a. In simplest form, \(\frac{5}{14}\) of the students have a cat.
i. True
ii. False

Answer:
i. True

Explanation:
In simplest form 5/14 of the students have a cat
From the above, 10/28 of the students have a cat
Divide the numerator and denominator of 10/28 with 2
(10÷2)/(28÷2) = 5/14
True

Question 11.
b. In simplest form, \(\frac{2}{4}\) of the students have a dog.
i. True
ii. False

Answer:
i. True

Explanation:
In simplest form, 2/4 of the students have a dog
From the above, 6/12 of the students have a dog
Divide the 6/12 with 3
(6 = 2/4
True

Question 11.
c. In simplest form, \(\frac{1}{7}\) of the students have a pet bird.
i. True
ii. False

Answer:
i. True

Explanation:
In the simplest form, 1/7 of the students have a pet bird
From the data, 2/14 of the students have a pet bird
Divide the numerator and denominator of 2/14 with 2
(2÷2)/(14÷2) = 1/7
True

Page No. 380

Question 12.
Regina, Courtney, and Ellen hiked around Bear Pond. Regina hiked \(\frac{7}{10}\) of the distance in an hour. Courtney hiked \(\frac{3}{6}\) of the distance in an hour. Ellen hiked 38 of the distance in an hour. Compare the distances hiked by each person by matching the statements to the correct symbol. Each symbol may be used more
than once or not at all.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 33
Type below:
_________

Answer:
chapter 6 - compare fractions and order fractions- image13

Explanation:
From the given information
Regina, Courtney, and Ellen hiked around Bear Pond
Regina hiked 7/10 of the distance in an hour
Courtney hiked 3/6 of the distance in an hour
Ellen hiked 3 /8 of the distance in an hour
Compare 7/10 and 3/6
The common denominator of 7/10 and 3/6 is 30
(7×3)/(10×3) and (3×5)/(6×5)
21/30 and 15/30
So, 21/30 > 15/30
So, 7/10 > 15/30
Compare 3/8 and 3/6
The common denominator of 3/8 and 3/6 is 24
(3×3)/(8×3) and (3×4)/(6×4)
9/24 and 12/24 = 9/24 < 12/24 = 3/8 < 3/6
Compare 7/10 and 3/8
The common denominator of 7/10 and 3/8 is 40
(7×4)/(10×4) and (3×5)/(8×5)
28/40 >15/40 = 7/10 > 3/8

Question 13.
Ramon is having some friends over after a baseball game. Ramon’s job is to make a vegetable dip. The ingredients for the recipe are given.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 34
Part A
Which ingredient does Ramon use the greater amount of, buttermilk or cream cheese? Explain how you found your answer.
Type below:
_________

Answer:
Ramon use 5/8 cup of buttermilk and 1/2 cup cream cheese
By comparing these two ingredients
The common denominator of 5/8 and 1/2 are 8
(1×4)/(2×4) =4/8
So, 5/8 > 4/8
So, 5/8 cup buttermilk is > ½ cup cream cheese

Question 13.
Part B
Ramon says that he needs the same amount of two different ingredients. Is he correct? Support your answer with information from the problem.
______

Answer:
Ramon says that he needs the same amount of two ingredients
Yes, Ramon uses 3/4 cup parsley and 6/8 cup scallions
Multiply the 3/4 with 2
(3×2)/(4×2) = 6/8
So, Ramon uses the same amount that is 3/4 cup for parsley and scallions

Page No. 381

Question 14.
Sandy is ordering bread rolls for her party. She wants \(\frac{3}{5}\) of the rolls to be whole wheat. What other fractions can represent the part of the rolls that will be whole wheat? Shade the models to show your work.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 35
Type below:
_________

Answer:
chapter 6 - compare fractions and order fractions- image15

Explanation:
As per the information,
Sandy is ordering bread rolls for her party
She wants 3/5 of the rolls to be whole wheat
For an equivalent fraction of 3/5, multiply with 5
(3×5)/(5×5) = 15/25
Again multiply the 15/25 with 4
(15×4)/(25×4) = 60/100

Question 15.
Angel has \(\frac{4}{8}\) yard of ribbon and Lynn has \(\frac{3}{4}\) yard of ribbon. Do Angel and Lynn have the same amount of ribbon? Shade the model to show how you found your answer. Explain your reasoning.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 36
Type below:
_________

Answer:
grade 4 chapter 6 image 4
Angel and Lynn didn’t have the same amount of ribbon. 4/8 is a greater fraction compared to 3/4. So, Angel’s ribbon is long compared to Lynn’s ribbon.

Question 16.
Ella used \(\frac{1}{4}\) yard of red ribbon. Fill in each box with a number from the list to show equivalent fractions for \(\frac{1}{4}\). Not all numbers will be used.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 37
Type below:
_________

Answer:
grade 4 chapter 6 image 3

Explanation:
1/4 = 2/8 = 4/16 = 3/12

Page No. 382

Question 17.
Frank has two same-size rectangles divided into the same number of equal parts. One rectangle has \(\frac{3}{4}\) of the parts shaded, and the other has \(\frac{1}{3}\) of the parts shaded.
Part A
Into how many parts could each rectangle be divided? Show your work by drawing the parts of each rectangle.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 38
_____ parts

Answer:
grade 4 chapter 6 image 2
12 parts

Question 17.
Part B
Is there more than one possible answer to Part A? If so, did you find the least number of parts into which both rectangles could be divided? Explain your reasoning.
Type below:
_________

Answer:
Yes, as long it is a multiple of 12.
And yes,12 is the least in order to have 1 rectangle have 3/4 shaded and the other 1/3 shaded.

Question 18.
Suki rode her bike \(\frac{4}{5}\) mile. Claire rode her bike \(\frac{1}{3}\) mile. They want to compare how far they each rode their bikes using the benchmark \(\frac{1}{2}\). For numbers 18a–18c, select the correct answers to describe how to solve the problem.
a. Compare Suki’s distance to the benchmark:
\(\frac{4}{5}\) _____ \(\frac{1}{2}\)

Answer:
\(\frac{4}{5}\) ≠ \(\frac{1}{2}\)

Explanation:
The fraction \(\frac{4}{5}\) is not equal to \(\frac{1}{2}\).

Question 18.
b. Compare Claire’s distance to the benchmark:
\(\frac{1}{3}\) _____ \(\frac{1}{2}\)

Answer:
\(\frac{1}{3}\) ≠ \(\frac{1}{2}\)

Explanation:
The fraction \(\frac{1}{3}\) is not equal to \(\frac{1}{2}\)

Question 18.
c. Suki rode her bike _____ Claire.

Answer:
Suki rode her bike faster than Claire.

Page No. 387

Use the model to write an equation.

Question 1.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 39
Type below:
_________

Answer:
\(\frac{3}{5}\) + \(\frac{1}{5}\) = \(\frac{4}{5}\)

Question 2.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 40
Type below:
_________

Answer:
\(\frac{2}{3}\) – \(\frac{1}{3}\) = \(\frac{1}{3}\)

Question 3.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 41
Type below:
_________

Answer:
\(\frac{1}{4}\) + \(\frac{1}{4}\) = \(\frac{2}{4}\)

Question 4.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 42
Type below:
_________

Answer:
1 – \(\frac{5}{8}\) = \(\frac{8}{8}\) – \(\frac{5}{8}\) = \(\frac{3}{8}\)

Use the model to solve the equation.

Question 5.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 43
\(\frac{3}{4}-\frac{1}{4}\) = \(\frac{□}{□}\)

Answer:
\(\frac{2}{4}\)

Question 6.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 44
\(\frac{5}{6}+\frac{1}{6}\) = \(\frac{□}{□}\)

Answer:
\(\frac{6}{6}\) = 1

Question 7.
Reason Abstractly Sean has \(\frac{1}{5}\) of a cupcake and \(\frac{1}{5}\) of a large cake.
a. Are the wholes the same? Explain.
______

Answer:
Yes; From the given information, the fraction of the cupcake and large cake are the same.

Explanation:

Question 7.
Does the sum \(\frac{1}{5}+\frac{1}{5}=\frac{2}{5}\) make sense in this situation? Explain.
______

Answer:
Yes; it makes sense. From the given data, 1 part is out of 5 parts. So, adding two fractions (1 part is out of 5 parts), the complete fraction becomes 2/5.

Question 8.
Carrie’s dance class learned \(\frac{1}{5}\) of a new dance on Monday, and \(\frac{2}{5}\) of the dance on Tuesday. What fraction of the dance is left for the class to learn on Wednesday?
\(\frac{□}{□}\)

Answer:
\(\frac{3}{5}\)

Explanation:
The fraction of left for the class to learn on Wednesday is \(\frac{3}{5}\).

Page No. 388

Question 9.
Samantha and Kim used different models to help find \(\frac{1}{3}+\frac{1}{6}\). Whose model makes sense? Whose model is nonsense? Explain your reasoning below each model.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 45

Answer:
Both Samantha and Kim’s statements make sense. Because both models have an equal number of fractions for each diagram.

Question 10.
Draw a model you could use to add \(\frac{1}{4}+\frac{1}{2}\).
Type below:
___________

Answer:
grade 4 chapter 6 image 1

Question 11.
Cindy has two jars of paint. One jar is \(\frac{3}{8}\) full. The other jar is \(\frac{2}{8}\) full. Use the fractions to write an equation that shows the amount of paint Cindy has.
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 46
Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison img 47
Type below:
___________

Answer:
\(\frac{3}{8}+\frac{2}{8}\) = \(\frac{5}{8}\)

Explanation:

Conclusion:

Download Go Math Grade 4 Answer Key Chapter 6 Fraction Equivalence and Comparison PDF for free. Make your students ready for the test with the practice of Go Math Grade 4 Answers. Get all the types of questions, answers in one place for free.

Go Math Grade 4 Chapter 6 Answer Key Pdf Fraction Equivalence and Comparison Read More »

Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers

Go Math Grade 4 Chapter 3 Answer Key Pdf Multiply 2-Digit Numbers

Go Math Grade 4 Chapter 3 Answer Key Pdf: Do you want real-time learning for your students? Then, you must follow Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers. The unlimited practice with different question types and detailed explanation. HMH Go Math Grade 4 Chapter 3 Multiply 2-Digit Numbers Answer Key is the guide for all students who want to achieve their top grades easily.

Students can learn the easy methods to solve problems using HMH Go Math Grade 4 Answer Key. All the problems are solved per the student’s understanding level and provided every answer with an explanation. Houghton Mifflin Harcourt Go Math Grade 4 Answer key is the one-stop solution for every student who wants to choose the correct path to maths skills.

Multiply 2-Digit Numbers Go Math Grade 4 Chapter 3 Answer Key Pdf

The chapter-wise questions and answers along with mid-chapter solutions and review test questions explanations are given. By solving with the HMH grade 4 Go Math Answer Key, students can get success in solving all kinds of Math problems efficiently. Every problem is mentioned in step-by-step solving. The concepts are very clear and included in an understandable way.

Lesson 1: Multiply by Tens

Lesson 2: Estimate Products

Lesson 3: Investigate • Area Models and Partial Products

Lesson 4: Multiply Using Partial Products

Mid-Chapter Checkpoint

Lesson 5: Multiply with Regrouping

Lesson 6: Choose a Multiplication Method

Lesson 7: Problem Solving • Multiply 2-Digit Numbers

Review/Test

Common Core – Page No. 149

Multiply by Tens

Choose a method. Then find the product.

Question 1.
16 × 60 = 960
Use the halving-and-doubling strategy.
Find half of 16: 16 ÷ 2 = 8.
Multiply this number by 60: 8 × 60 = 480
Double this result: 2 × 480 = 960

Answer:
960

Explanation:
Use the halving-and-doubling strategy.
Find half of 16: 16 ÷ 2 = 8.
Multiply this number by 60: 8 × 60 = 480
Double this result: 2 × 480 = 960

Question 2.
80 × 22 = ______

Answer:
1760

Explanation:
By using the place value method, Multiply 80 x 22
You can think of 80 as 8 tens
80 x 22 = (22 x 8) tens
= 176 tens
= 176 x 10 = 1760
80 x 22 = 1760

Go Math Grade 4 Chapter 3 Lesson 3.1 Multiply by Tens Question 3.
30 × 52 = ______

Answer:
1560

Explanation:
Use the Associative Property
You can think of 30 as 3 x 10
30 x 52 = (3 x 10) x 52
= 3 x (10 x 52)
=  3 x 520
= 1560
30 x 52 = 1560

Question 4.
60 × 20 = ______

Answer:
1200

Explanation:
60 x 20
Use the halving and doubling strategy
half of the 60 to make the problem simpler
60/ 2 = 30
Multiply 30 with 20
30 x 20 = 600
Double the 600
2 x 600= 1200
60 x 20 = 1200

Question 5.
40 × 35 = ______

Answer:
1400

Explanation:
By using the Associative Property 40 x 35
You can think of 40 as 4 x 10
40 x 35 = (4 x 10) x 35
= 4  x (10 x 35)
= 4 x 350
= 1400
40 x 35 = 1400

Question 6.
10 × 90 = ______

Answer:
900

Explanation:
By using the place value method, Multiply 10 x 90
You can think of 90 as 9 tens
10 x 90 = (10 x 9) tens
= 90 tens
= 10 x 90 = 900

Question 7.
31 × 50 = ______

Answer:
1,550

Explanation:
Use the place value method to multiply 31 x 50
You can think of 50 as 5 tens
31 x 50 = 31 x 5 tens
= 155 tens
= 1,550
31 x 50 = 1,550

Problem Solving

Question 8.
Kenny bought 20 packs of baseball cards. There are 12 cards in each pack. How many cards did Kenny buy?
______ cards

Answer:
240 cards

Explanation:
From the given data,
Kenny bought 20 packs of basketball cards
There are 12 cards in each pack = 12 x 20 cards
Use the associative property
You can write 20 as 2 x 10
12 x 20 = 12 x (2 x 10)
= (12 x 2) x 10
= (24) x 10
= 240 cards
Kenny bought 240 cards

Question 9.
The Hart family drove 10 hours to their vacation spot. They drove an average of 48 miles each hour. How many miles did they drive in all?
______ miles

Answer:
480 miles

Explanation:
As per the given data,
Hart family drove 10 hours to their vacation spot
Average speed per each hour is = 48 miles
Total miles = 48 x 10
Use the halving and doubling strategy
Half of the 48 to make the problem simpler
48/ 2 = 24
Multiply 24 with 10 = 24x 10 = 240
Double the value = 2 x 240 = 480 miles
Total miles drove by hart family = 480 miles.

Common Core – Page No. 150

Lesson Check

Question 1.
For the school play, 40 rows of chairs are set up. There are 22 chairs in each row. How many chairs are there in all?
Options:
a. 800
b. 840
c. 880
d. 8,800

Answer:
c. 880

Explanation:
As per the given data
For the school play, 40 rows of chairs are available. 22 chairs are available in each row.
Then total chairs in school play are = 22 x 40
By using the place value method
You can think of 40 as 4 tens
22 x 40 = 22 x 4 tens
= 88 tens
= 880
Total chairs in school are = 880

Question 2.
At West School, there are 20 classrooms. Each classroom has 20 students. How many students are at West School?
Options:
a. 40
b. 400
c. 440
d. 4,000

Answer:
b. 400

Explanation:
From the given data,
Total classrooms in west school = 20
Number of students per each classroom = 20
Then, total students at West School = 20 x 20
By using the associative property
You can think of 20 as 2 x 10
20 x 20 = 20 x (2 x 10)
= (20 x 2) x 10
=(40) x 10
=400
Total number of students at West School = 400

Spiral Review

Question 3.
Alex has 48 stickers. This is 6 times the number of stickers Max has. How many stickers does Max have?
Options:
a. 6
b. 7
c. 8
d. 9

Answer:
c. 8

Explanation:
As per the give data,
Alex has 48 stickers
That means, X= 48
This is 6 times the number of stickers max has = Y = 6X = 48
Then, number of stickers with Max = Y = X = 48/6 = 8
Number of stickers with Max = Y = 8 Stickers.

Question 4.
Ali’s dog weighs 8 times as much as her cat. Together, the two pets weigh 54 pounds. How much does Ali’s dog weigh?
Options:
a. 6 pounds
b. 42 pounds
c. 46 pounds
d. 48 pounds

Answer:
d. 48 pounds

Explanation:
From the given data,
Ali’s cat weight = X
Ali’s dog weight = 8 times as much as Ali’s cat = 8X
Together, the two pets weight = (X+8X) = 54 pounds
= 9X = 54 pounds
= X = 54/9 pounds = 6 pounds
Then, Ali’s dog weight = 8X =8 x 6 = 48 pounds.

Question 5.
Allison has 3 containers with 25 crayons in each. She also has 4 boxes of markers with 12 markers in each box. She gives 10 crayons to a friend. How many crayons and markers does Allison have now?
Options:
a. 34
b. 113
c. 123
d. 133

Answer:
b. 113

Explanation:
As per the given data,
Allison has 3 containers with 25 crayons in each = X = 3 x 25 = 75
Allison has 4 boxes of markers with 12 markers in each box = Y = 4 x 12 = 48
Allison gives 10 crayons to a friend = Z = 75-10 = 65
Now, total number of crayons and markers with Allison = Y + Z = 48 + 65 = 113

Question 6.
The state of Utah covers 82,144 square miles. The state of Montana covers 145,552 square miles. What is the total area of the two states?
Options:
a. 63,408 square miles
b. 223,408 square miles
c. 227,696 square miles
d. 966,992 square miles

Answer:
c. 227,696 square miles

Explanation:
From the given data,
The state of Utah covers 82,144 square miles
The state of Montana covers 145,552 square miles
Then, Total area of the two states = 82,144 + 145,552
The total area of two states = 227,696 square miles.

Page No. 153

Question 1.
To estimate the product of 62 and 28 by rounding, how would you round the factors? What would the estimated product be?
about _____

Answer:
1800

Explanation:
By using rounding and mental math
Estimate 62 x 28
Firstly, round each factor
62 x 28
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
60 x 30
Use mental math
6 x 3 = 18
60 x 30 = 1800
So, estimated product of 62 and 28 = 1800

Estimate the product. Choose a method.

Question 2.
96 × 34
Estimate: _____

Answer:
3000

Explanation:
Use mental math and compatible numbers
96 x 34
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
100 x 30
Use mental math
1 x 30 = 30
100 x 30= 3000

Go Math Chapter 3 Grade 4 Lesson 2 Estimate Products Question 3.
47 × $39
Estimate: $ _____

Answer:
2000

Explanation:
Round to the nearest ten
47 x $39
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
50 x $40
50 x $ 4 = $200
50 x $40 = 2000

Question 4.
78 × 72
Estimate: _____

Answer:
5600

Explanation:
Use rounding and mental math
Round each factor
78 x 72
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
80 x 70
Use mental math
8 x 7 = 56
80 x 70 = 5600

Question 5.
41 × 78
Estimate: _____

Answer:
3200

Explanation:
Use compatible numbers and mental math
41 x 78
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
40 x 80
Use mental math
40 x 8 = 320
40 x 80 = 3200

Question 6.
51 × 73
Estimate: _____

Answer:
3500

Explanation:
Round to the nearest ten
51 x 73
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
50 x 70 = 3500

Question 7.
34 × 80
Estimate: _____

Answer:
2400

Explanation:
Round each factor
34 x 80
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
30 x 80
3 x 8 = 240
30 x 80 = 2400

Practice: Copy and Solve Estimate the product. Choose a method.

Question 8.
61 × 31
Estimate: _____

Answer:
1800

Explanation:
Round to the nearest ten
61 x 31
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
60 x 30 = 1800

Go Math Key Answers Estimate Products Lesson 3.2 Question 9.
52 × 68
Estimate: _____

Answer:
3500

Explanation:
Round each factor
52 x 68
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
50 x 70
Use mental math
5 x 7 =35
50 x 70 = 3500

Question 10.
26 × 44
Estimate: _____

Answer:
1200

Explanation:
Round to the nearest tens
26 x 44
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
30 x 40 = 1200

Question 11.
57 × $69
Estimate: $ _____

Answer:
$4200

Explanation:
Round each factor
57 x $69
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
60 x $70
Use mental math
6 x $7 = $42
60 x $70 = $4200

Find two possible factors for the estimated product.

Question 12.
2,800
Type below:
___________

Answer:
2800

Explanation:
Let us consider 7 x 4 = 28
70 x 40 = 2800

Question 13.
8,100
Type below:
___________

Answer:
8,100

Explanation:
Let us take 9 x 9 = 81
90 x 90 = 8,100

Question 14.
5,600
Type below:
___________

Answer:
5,600

Explanation:
Let us consider 7 x 8 = 56
70 x 80 = 5,600

Question 15.
2,400
Type below:
___________

Answer:
2,400

Explanation:
Let us take 4 x 6 = 24
40 x 60 = 2400
Or 3 x 8 = 24
30 x 80 = 2,400

Question 16.
Mr. Parker jogs for 35 minutes each day. He jogs 5 days in week 1, 6 days in week 2, and 7 days in week 3. About how many minutes does he jog?
about _____ minutes

Answer:
about 630 minutes

Explanation:
From the given data,
Mr. Parker jogs per day = 35 minutes
He jogs 5 days in week 1 = 5 x 35 = 175 minutes
6 days in week 2 = 6 x 35 = 210 minutes
7 days in week 3 = 7 x 35 = 245 minutes
Total minutes of jog by Mr. Parker = week 1 + week 2 + week 3
= 175 + 210 + 245
= 630 minutes
So, total minutes of jog by Mr. Parker = 630 minutes

Question 17.
There are 48 beads in a package. Candice bought 4 packages of blue, 9 packages of gold, 6 packages of red, and 2 packages of silver beads. About how many beads did Candice buy?
about _____ beads

Answer:
about 1008 beads

Explanation:
As per the given data,
48 beads are there in a package
Candice bought 4 packages of blue beads = 4 x 48 = 192
9 packages of gold beads = 9 x 48 = 432
6 packages of red beads = 6 x 48 = 288
2 packages of silver beads = 2 x 48 = 96
Total beads bought by Candice = 192 + 432 + 288 + 96
= 1008 beads
So, total beads bought by Candice = 1008.

Page No. 154

Question 18.
On average, a refrigerator door is opened 38 times each day. Len has two refrigerators in his house. Based on this average, about how many times in a 3-week period are the refrigerator doors opened?
about _____ times

Answer:
about 1600 times

Explanation:
From the given data,
On average, a refrigerator door is opened per day = 38 times
3-week period = 7 x 3 = 21
Then, a refrigerator door is opened per 21 days = 21 x 38 = 798 times
Len has 2 refrigerators in his house
Then, two refrigerators door are opened per 21 days = 2 x 798
= 1596 times
So, in a 3 – week period refrigerator door is opened about 1600 times

Question 19.
The cost to run a refrigerator is about $57 each year. About how much will it have cost to run by the time it is 15 years old?
about $ _____

Answer:
1200

Explanation:
As per the data,
The cost to run a refrigerator per each year = $57
Cost to run a refrigerator by the time it is 15 years old = $57 * 15
Round to the nearest tens
$57 x 15
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
$60 x 20
Use mental math
$6 x 2 = 12
$ 60 x 20 = 1200

Question 20.
If Mel opens his refrigerator door 36 times every day, about how many times will it be opened in April? Will the exact answer be more than or less than the estimate? Explain.
Type below:
___________

Answer:
1200

Explanation:
From the given data,
Mel opens his refrigerator door per day = 36 times
Number of days in April month = 30 days
Refrigerator door opened in April month = 36 * 30
Round the factors
36 x 30
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
40 x 30 = 1200

Go Math Grade 4 Chapter 3 Test Question 21.
Represent a Problem What question could you write for this answer? The estimated product of two numbers, that are not multiples of ten, is 2,800.
Type below:
___________

Answer:
2800

Explanation:
Let us take
1.
38 × 21
↓        ↓
40 × 20 = 800
2,800 = 42 x 68
↓    ↓
40 x  70 = 2800

Question 22.
Which is a reasonable estimate for the product? Write the estimate. An estimate may be used more than once.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 1
26 × 48 __________
28 × 21 __________
21 × 22 __________
51 × 26 __________

Answer:
25 x 50 = 1250
30 x 20 = 600
20 x 20 = 400
50 x 25 = 1250

Explanation:
26 x 48 -> 25 x 50 = 1250
28 x 21 -> 30 x 20 = 600
21 x 22 -> 20 x 20 = 400
51 x 26 -> 50 x 25 = 1250

Common Core – Page No. 155

Estimate Products
Estimate the product. Choose a method.

Question 1.
38 × 21
38 × 21
↓       ↓
40 × 20
800

Answer:
800

Explanation:
38 × 21
↓        ↓
40 × 20
800

Question 2.
63 × 19
Estimate: _____

Answer:
1200

Explanation:
63 x 19
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
60 x 20 = 1200
Estimated product of 63 x 19 = 1200

Question 3.
27 × $42
Estimate: $ _____

Answer:
$1000

Explanation:
27 × $42
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
25 x $40 = $1000
Estimated Product of 25 x $ 42 = $1000

Question 4.
73 × 67
Estimate: _____

Answer:
4900

Explanation:
73 × 67
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
70 x 70 = 4900
Estimated Product of 73 x 67 = 4900

Question 5.
37 × $44
Estimate:$ _____

Answer:
$1600

Explanation:
37 × $44
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
40 x $40 = $1600
Estimated Product of 37 x $44 = $1600

Question 6.
85 × 71
Estimate: _____

Answer:
6300

Explanation:
85 × 71
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
90 x 70 = 6300
Estimated Product of 85 x 71 = 6300

Question 7.
88 × 56
Estimate: _____

Answer:
4950

Explanation:
88 × 56
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
90 x 55 = 4950
Estimated Product of 90 x 55 = 4950

Question 8.
97 × 13
Estimate: _____

Answer:
1,000

Explanation:
97 × 13
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
100 x 10 = 1,000

Question 9.
92 × 64
Estimate: _____

Answer:
5850

Explanation:
92 × 64
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
90 x 65 = 5850

Problem Solving

Question 10.
A dime has a diameter of about 18 millimeters. About how many millimeters long would a row of 34 dimes be?
about _____ millimeters

Answer:
about 600 millimeters

Explanation:
From the given data,
A dime has a diameter of about 18 millimeters
Then, 34 dimes diameter = 18 * 34
18 x 34
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
20 x 30 = 600
So, 34 dimes have a diameter of about 600 millimeters long

Go Math Grade 4 Chapter 3 Mid Chapter Checkpoint Question 11.
A half-dollar has a diameter of about 31 millimeters. About how many millimeters long would a row of 56 half-dollars be?
about _____ millimeters

Answer:
1800 millimeters

Explanation:
As per the given data,
A half–dollar has a diameter of about 31 millimeters
Then, 56 half-dollars diameter = 31 * 56
31 * 56
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
30 * 60
So, 56 half-dollars have a diameter of about 1800 millimeters long.

Common Core – Page No. 156

Lesson Check

Question 1.
Which is the best estimate for the product
43 × 68?
Options:
a. 3,500
b. 2,800
c. 2,400
d. 280

Answer:
b. 2,800

Explanation:
Round to the nearest tens
43 x 68
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
40 x 70
Use mental math
4 x 7 = 28
40 x 70 = 2800
Estimated product of 43 x 68 = 2800

Question 2.
Marissa burns 93 calories each time she plays fetch with her dog. She plays fetch with her dog once a day. About how many calories will Marissa burn playing fetch with her dog in 28 days?
Options:
a. 4,000
b. 2,700
c. 2,000
d. 270

Answer:
b. 2,700

Explanation:
From the given data,
Marissa burned calories each time when she plays fetch with her dog= 93 calories
Then, Marissa burned calories in 28 days while playing fetch with her dog = 28 x 93
Round to the nearest tens
28 x 93
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers      Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers
30 x 90
Then, estimated burned calories in 28 days by Marissa = 2700 calories

Spiral Review

Question 3.
Use the model to find 3 × 126.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Common Core img 2
Options:
a. 368
b. 378
c. 468
d. 478

Answer:
b. 378

Explanation:
From the above Figure,
3 x 126 = 3 x 100 + 3 x 20 + 3 x 6
= 300 + 60 + 18
= 378
3 x 126 = 378

Question 4.
A store sells a certain brand of jeans for $38. One day, the store sold 6 pairs of jeans of that brand. How much money did the store make from selling the 6 pairs of jeans?
Options:
a. $188
b. $228
c. $248
d. $288

Answer:
b. $228

Explanation:
As per the given data,
A store sells a certain brand of jeans for rupees = $38
One day, the store sold 6 pairs of jeans of that brand = 6 x $38
6 x $38 = $228
The total amount of 6 pairs of jeans = $228

Question 5.
The Gateway Arch in St. Louis, Missouri, weighs about 20,000 tons. Which amount could be the exact number of tons the Arch weighs?
Options:
a. 31,093 tons
b. 25,812 tons
c. 17,246 tons
d. 14,096 tons

Answer:
c. 17,246 tons

Explanation:
From the given data,
The Gateway Arch in St.Louis, Missouri weight = about 20,000 tons
From the available options, 17,246 tons is closer to 20,000 tons
Then, the exact number of tons the Arch weighs = 17,246 tons

Question 6.
Which is another name for 23 ten thousands?
Options:
a. 23,000,000
b. 2,300,000
c. 230,000
d. 23,000

Answer:
c. 230,000

Explanation:
As per the data,
Another name for 23 ten thousands = 23 x 10,000
= 230,000
Another name for 23 ten thousand = 2,30,000

Page No. 159

Find the product.

Question 1.
16 × 19
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 3
16 × 19 = _____

Answer:
304

Explanation:
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 3
16 x 19 = 304

Question 2.
18 × 26
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 4
18 × 26 = _____

Answer:
468

Explanation:
Chapter 3 - Common core - Image 1. jpg
200 + 160 + 60 + 48 = 468

Question 3.
27 × 39
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 5
27 × 39 = ______

Answer:
1,053

Explanation:
Chapter 3 - Common core - image 2
600 + 210 + 180 +63 = 1053

Draw a model to represent the product.
Then record the product.

Question 4.
14 × 16 = ______

Answer:
224

Explanation:
Chapter 3 - Common core - Image 3
100 + 40 + 60 + 24 = 224

Question 5.
23 × 25 = ______

Answer:
575

Explanation:
Chapter 3 - Common core - Image 4
400 + 60 + 100 + 15 = 575

Question 6.
Explain how modeling partial products can be used to find the products of greater numbers.
Type below:
__________

Answer:
You can use mental math to find the partial products and then find the sum of the partial products.

Explanation:

Question 7.
Emma bought 16 packages of rolls for a party. There were 12 rolls in a package. After the party there were 8 rolls left over. How many rolls were eaten? Explain.
______ rolls

Answer:
184 rolls were eaten

Explanation:
From the given data,
Emma bought 16 packages of rolls for a party
There were 12 rolls in a package
Then, total rolls = 16 x 12 = 192
Chapter 3 - Common core - Image 5
100 + 60 + 20 + 12 =192
After the party there were 8 rolls left over
Then, total eaten rolls are = 192 – 8 = 184

Page No. 160

Question 8.
Jamal and Kim used different ways to solve 12 × 15 by using partial products. Whose answer makes sense? Whose answer is nonsense? Explain your reasoning.
Jamal’s Work
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 6
100 + 20 + 10 = 130

Kim’s Work
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 7
120 + 60 = 180
a. For the answer that is nonsense, write an answer that makes sense.
Type below:
__________

Answer:
a. Jamal’s work makes nonsense.
100 + 20 + 50 + 10 = 180 it makes sense

Question 8.
b. Look at Kim’s method. Can you think of another way Kim could use the model to find the product? Explain.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 8
Type below:
__________

Answer:
Other method: 12 x 15
10 x 12 = 120
5 x 12 = 60
120 + 60 = 180.

Explanation:
Kim follows another method to find 12 x 15
That is, 100 + 50 = 150
20 + 10 = 30
Then, 150 + 30 =180
12 x 15 = 180

Question 9.
Look at the model in 8b. How would the partial products change if the product was 22 × 15? Explain why you think the products changed.
Type below:
__________

Answer:
330

Explanation:
Following the 8b method
22 x 15 =330
Chapter 3 - Common core - Image 6
200 + 100 = 300
20 + 10 = 30
Now, 300 + 30 = 330
Finally, 22 x 15 = 330
The factor of 15 is increased in present problem. So, the product also increases for 15 x 22.

Common Core – Page No. 161

Area Models and Partial Products

Draw a model to represent the product.
Then record the product.

Question 1.
13 × 42
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Common Core img 9

Answer:
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Common Core img 9

Question 2.
18 × 34 = ______

Answer:
chapter 3 - Area models and partial products- image 1. jpg
300 + 40 + 240 + 32 = 612

Question 3.
22 × 26 = ______

Answer:
chapter 3 - Area models and partial products- image 2. jpg
400 + 120 + 40 + 12 = 572

Question 4.
1 5 × 33 = ______

Answer:
chapter 3 - Area models and partial products- image 3. jpg
300 + 30 + 150 + 15 = 495

Question 5.
23 × 29 = ______

Answer:
chapter 3 - Area models and partial products- image 4. jpg
400 + 180 + 60 + 27 = 667

Question 6.
19 × 36 = ______

Answer:
chapter 3 - Area models and partial products- image 5. jpg
300 + 60 + 270 + 54 = 684

Problem Solving

Question 7.
Sebastian made the following model to find the product 17 × 24.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Common Core img 10
Is his model correct? Explain.
a. yes
b. no

Answer:
b. no

Explanation:
chapter 3 - Area models and partial products- image 6. jpg
200 + 40 + 140 + 28 = 408

Question 8.
Each student in Ms. Sike’s kindergarten class has a box of crayons. Each box has 36 crayons. If there are 18 students in Ms. Sike’s class, how many crayons are
there in all?
______ crayons

Answer:
648 crayons

Explanation:
From the given information,
Each student in Ms.Sike’s kindergarten class has a box of crayons
Crayons in each box = 36 Crayons
Number of students in Mr.Sike’s class = 18 students
Total crayons = 18 x 36
chapter 3 - Area models and partial products- image 7. jpg
300 + 60 + 240 + 48 = 648

Common Core – Page No. 162

Lesson Check

Question 1.
Which product does the model below represent?
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Common Core img 11
Options:
a. 161
b. 230
c. 340
d. 391

Answer:
d. 391

Explanation:
200 + 30 + 140 + 21 = 391
17 x 23 = 391

Question 2.
Which product does the model below represent?
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 12 img 12
Options:
a. 219
b. 225
c. 244
d. 275

Answer:
b. 225

Explanation:
130 + 20 + 65 + 10 = 225
15 x 15 = 225

Spiral Review

Question 3.
Mariah builds a tabletop using square tiles. There are 12 rows of tiles and 30 tiles in each row. How many tiles in all does Mariah use?
Options:
a. 100
b. 180
c. 360
d. 420

Answer:
c. 360

Explanation:
From the given data,
Mariah builds a tabletop using square tiles
The square contains 12 rows of tiles and 30 tiles in each row = 12 x 30
12 x 30 = 360 tiles
Total tiles used by Mariah = 360 tiles

Go Math Answer Key Chapter 3 Review Test Answer Key Question 4.
Trevor bakes 8 batches of biscuits, with 14 biscuits in each batch. He sets aside 4 biscuits from each batch for a bake sale and puts the rest in a jar. How many biscuits does Trevor put in the jar?
Options:
a. 112
b. 80
c. 50
d. 32

Answer:
b. 80

Explanation:
As per the given data,
Number of biscuits baked by Trevor = 8 batches
Number of biscuits in each batch = 14 biscuits
So, total biscuits = 14 x 8 = 112
Trevor sets aside 4 biscuits from each batch for a bake = 8*4 = 32 biscuits are aside for a bake
Trevor kept rest of biscuits in a jar = 112 – 32 = 80
So, 80 biscuits are put in the jar by the Trevor

Question 5.
Li feeds her dog 3 cups of food each day. About how many cups of food does her dog eat in 28 days?
Options:
a. 60 cups
b. 70 cups
c. 80 cups
d. 90 cups

Answer:
c. 80 cups

Explanation:
As per the given data,
Li feeds her dog per day = 3 cups of food
Then, Li feeds her dog for 28 days = 3 x 28
= 84 cups of food
So, Li feeds her dog with 84 cups of food in 28 days

Question 6.
Which symbol makes the number sentence true?
4 ■ 0 = 0
Options:
a. +
b. –
c. ×
d. ÷

Answer:
c. ×

Explanation:
4 x 0 = 0

Page No. 165

Question 1.
Find 24 × 34.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 13
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 14
_____

Answer:
816

Explanation:
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 13
chapter 3 - Area models and partial products- image 9. jpg

Question 2.
1 2
× 1 2
——–
_____

Answer:
144

Explanation:
chapter 3 - Area models and partial products- image 10. jpg
chapter 3 - Area models and partial products- image 11. jpg

Question 3.
3 1
× 2 4
——-
_____

Answer:
744

Explanation:
chapter 3 - Area models and partial products- image 12. jpg
chapter 3 - Area models and partial products- image 13. jpg

Question 4.
2 5
× 4 3
——-
_____

Answer:
1,075

Explanation:
chapter 3 - Area models and partial products- image 14. jpg
chapter 3 - Area models and partial products- image 15. jpg

Multiply Using Partial Products Lesson 3.4 Answer Key Question 5.
3 7
× 2 4
——-
_____

Answer:
888

Explanation:
chapter 3 - Area models and partial products- image 16. jpg
chapter 3 - Area models and partial products- image 17. jpg

Question 6.
5 4
× 1 5
——-
_____

Answer:
810

Explanation:
chapter 3 - Area models and partial products- image 18. jpg
chapter 3 - Area models and partial products- image 19. jpg

Question 7.
8 7
× 1 6
——-
_____

Answer:
1,392

Explanation:
chapter 3 - Area models and partial products- image 20. jpg
chapter 3 - Area models and partial products- image 21. jpg

Question 8.
6 2
× 5 6
——-
_____

Answer:
3,472

Explanation:
chapter 3 - Area models and partial products- image 22. jpg
chapter 3 - Area models and partial products- image 23. jpg

Question 9.
4 9
× 6 3
——-
_____

Answer:
3,087

Explanation:
chapter 3 - Area models and partial products- image 24. jpg
chapter 3 - Area models and partial products- image 25. jpg

Practice: Copy and Solve Record the product.

Question 10.
38 × 47
_____

Answer:
1,786

Explanation:
chapter 3 - Area models and partial products- image 26. jpg
chapter 3 - Area models and partial products- image 27. jpg

Question 11.
46 × 27
_____

Answer:
1,242

Explanation:
chapter 3 - Area models and partial products- image 28. jpg
chapter 3 - Area models and partial products- image 29. jpg

Question 12.
72 × 53
_____

Answer:
3,816

Explanation:
chapter 3 - Area models and partial products- image 30. jpg
chapter 3 - Area models and partial products- image 31. jpg

Question 13.
98 × 69
_____

Answer:
6,762

Explanation:
chapter 3 - Area models and partial products- image 32. jpg
chapter 3 - Area models and partial products- image 33. jpg

Multiply Using Partial Products Lesson 3.4 Question 14.
53 × 68
_____

Answer:
3,604

Explanation:
chapter 3 - Area models and partial products- image 34. jpg
chapter 3 - Area models and partial products- image 35. jpg

Question 15.
76 × 84
_____

Answer:
6,384

Explanation:
chapter 3 - Area models and partial products- image 36. jpg
chapter 3 - Area models and partial products- image 37. jpg

Question 16.
92 × 48
_____

Answer:
4,416

Explanation:
chapter 3 - Area models and partial products- image 38. jpg
chapter 3 - Area models and partial products- image 39. jpg

Question 17.
37 × 79
_____

Answer:
2,923

Explanation:
chapter 3 - Area models and partial products- image 40. jpg
chapter 3 - Area models and partial products- image 41. jpg

Reason Abstractly Algebra Find the unknown digits. Complete the problem.

Question 18.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 15
Type below:
___________

Answer:
1,824

Explanation:
chapter 3 - Area models and partial products- image 42. jpg

Question 19.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 16
Type below:
___________

Answer:
7,954

Explanation:
chapter 3 - Area models and partial products- image 43. jpg

Question 20.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 17
Type below:
___________

Answer:
1,908

Explanation:
chapter 3 - Area models and partial products- image 44. jpg

Question 21.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 18
Type below:
___________

Answer:
952

Explanation:
chapter 3 - Area models and partial products- image 45. jpg

Page No. 166

Use the picture graph for 22–24.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 19

Question 22.
Use Graphs A fruit-packing warehouse is shipping 15 boxes of grapefruit to a store in Santa Rosa, California. What is the total weight of the shipment?
______ pounds

Answer:
1275 pounds

Explanation:
From the given data,
A fruit packing warehouse is shipping 15 boxes of grapefruit to store in Santa Rose, California
Grapefruit weight per box = 85 pounds
Total weight of the shipment = 85 x 15
chapter 3 - Area models and partial products- image 46. jpg
So, the total weight of the shipment = 1275 pounds

Question 23.
How much less do 13 boxes of tangelos weigh than 18 boxes of tangerines?
______ pounds

Answer:
450 pounds

Explanation:
As per the given data,
Tangelos weight per box = 90 pounds
Then, the weight of the 13 boxes of tangelos = 90 x 13
chapter 3 - Area models and partial products- image 47. jpg
And, the weight of the 18 boxes of tangelos = 90 x 18
chapter 3 - Area models and partial products- image 48. jpg
1620 – 1170 = 450
So, 13 boxes of tangelos weight are 450 pounds less than 18 boxes of tangelos weight

Question 24.
What is the weight of 12 boxes of oranges?
______ pounds

Answer:
1,080 pounds

Explanation:
The weight of the oranges per box = 90 pounds
then, weight of 12 boxes oranges = 90 x 12
chapter 3 - Area models and partial products- image 49. jpg
So, weight of 12 boxes oranges = 1,080 pounds

Question 25.
Each person in the United States eats about 65 fresh apples each year. Based on this estimate, how many apples do 3 families of 4 eat each year?
______ apples

Answer:
780 apples

Explanation:
From the given data,
Each person in the united states eats fresh apples per year = 65
3 families of 4 persons = 3 x 4 = 12 persons
Then, the number of apples eat by 12 persons = 65 x 12
chapter 3 - Area models and partial products- image 50. jpg
So, the total number of apples eat by 12 persons per year = 780

Question 26.
The product 26 × 93 is greater than 25 × 93. How much greater? Explain how you know without multiplying.
______

Answer:
The difference is 93
26 x 93 is one more group of 93 than 25 x 93

Question 27.
Margot wants to use partial products to find 22 × 17. Write the numbers in the boxes to show 22 × 17.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 20
Type below:
__________

Answer:
chapter 3 - Area models and partial products- image 51. jpg

Explanation:
22 x 17
(20 + 2) x 17
20 x 17 + 2 x 17
20 x (10 + 7) + 2 x (10 + 7)
(20 x 10) + (20 x 7) + (2 x 10) + (2 x 7)
chapter 3 - Area models and partial products- image 51. jpg

Common Core – Page No. 167

Multiply Using Partial Products

Record the product.

Question 1.
2 3
× 7 9
———
1, 4 0 0
2 1 0
1 8 0
+ 2 7
——–
1, 8 1 7

Answer:
1, 8 1 7

Explanation:
2 3
× 7 9
———
1, 4 0 0
2 1 0
1 8 0
+ 2 7
——–
1, 8 1 7

Question 2.
5 6
× 3 2
——-
_______

Answer:
1,792

Explanation:
Chapter 3 - Common core - Image 7

Question 3.
8 7
× 6 4
——-
_______

Answer:
5,568

Explanation:
Chapter 3 - Common core - Image 8

Question 4.
3 3
× 2 5
——-
_______

Answer:
825

Explanation:
Chapter 3 - Common core - Image 9

Question 5.
9 4
× 1 2
——-
_______

Answer:
1,128

Explanation:
Chapter 3 - Common core - Image 10

Question 6.
5 1
× 7 7
——-
_______

Answer:
3,927

Explanation:
Chapter 3 - Common core - Image 11

Question 7.
6 9
× 4 9
——-
_______

Answer:
3,381

Explanation:
Chapter 3 - Common core - Image 12

Question 8.
8 6
× 8 4
——-
_______

Answer:
7,224

Explanation:
Chapter 3 - Common core - Image 13

Question 9.
9 8
× 4 2
——-
_______

Answer:
4,116

Explanation:
Chapter 3 - Common core - Image 14

Question 10.
7 3
× 3 7
——-
_______

Answer:
2,701

Explanation:
Chapter 3 - Common core - Image 15

Question 11.
8 5
× 5 1
——-
_______

Answer:
4,335

Explanation:
Chapter 3 - Common core - Image 16

Problem Solving

Question 12.
Evelyn drinks 8 glasses of water a day, which is 56 glasses of water a week. How many glasses of water does she drink in a year? (1 year = 52 weeks)
_______ glasses

Answer:
2,912 glasses

Explanation:
As per the given data,
Evelyn drinks 8 glasses of water a day
Evelyn drinks water per week = 56 glasses
Then, the number of glasses per 52 weeks = 52 x 56
Chapter 3 - Common core - Image 17
Total number of glasses of water drink by Evelyn per year = 2912 glasses of water

Multiply Using Partial Products Lesson 3.4 Answer Key Question 13.
Joe wants to use the Hiking Club’s funds to purchase new walking sticks for each of its 19 members. The sticks cost $26 each. The club has $480. Is this enough money to buy each member a new walking stick? If not, how much more money is needed?
Is the money enough? _______
How much more is needed? _______

Answer:
This amount is not enough to buy walking sticks
Still, $14 amount is needed to buy walking sticks

Explanation:
From the given data,
Joe wants to use the Hiking club funds to purchase new walking sticks for each of its 19 members
Cost per each stick = $26
Total walking sticks cost per 19 members = $26 x 19
Chapter 3 - Common core - Image 18
Total cost for walking sticks for 19 members = $494
The club has = $480
This amount is not enough to buy walking sticks
Still, $14 amount is needed to buy walking sticks

Common Core – Page No. 168

Lesson Check

Question 1.
A carnival snack booth made $76 selling popcorn in one day. It made 22 times as much selling cotton candy. How much money did the snack booth make selling
cotton candy?
Options:
a. $284
b. $304
c. $1,562
d. $1,672

Answer:
d. $1,672

Explanation:
As per the given data,
A carnival snack booth made popcorn in one day = $76
It made 22 times as much selling cotton candy
Then, total selling cotton candy made by snack booth = $76 x 22
Chapter 3 - Common core - Image 19
So, $1672 money snack booth will get for selling cotton candy

Question 2.
What are the partial products of
42 × 28?
Options:
a. 800, 80, 40, 16
b. 800, 16
c. 800, 40, 320, 16
d. 80, 16

Answer:
c. 800, 40, 320, 16

Explanation:
Chapter 3 - Common core - Image 20
So, partial products of 42 x 28 are 800, 40, 320, 16

Spiral Review

Question 3.
Last year, the city library collected 117 used books for its shelves. This year, it collected 3 times as many books. How many books did it collect this year?
Options:
a. 832
b. 428
c. 351
d. 72

Answer:
c. 351

Explanation:
From the given data,
Last year, the number of used books collected by city library by its shelves = 117 books
This year, it collected 3 times as many books = 3 x 117 =351 books
Total number of books collected by the city library for this year = 351 books

Question 4.
Washington Elementary has 232 students. Washington High has 6 times as many students. How many students does Washington High have?
Options:
a. 1,392
b. 1,382
c. 1,292
d. 1,281

Answer:
a. 1,392

Explanation:
As per the given data,
The number of students in Washington elementary = 232 students
Washington High has 6 times as many students = 6 x 232 = 1392
Total number of students in Washington High = 1392 students

Question 5.
What are the partial products of 35 × 7?
Options:
a. 10, 12
b. 21, 35
c. 210, 35
d. 350, 21

Answer:
c. 210, 35

Explanation:
Partial products of 35 x 7 are 210, 35

Question 6.
Shelby has ten $5 bills and thirteen $10 bills. How much money does Shelby have in all?
Options:
a. $15
b. $60
c. $63
d. $180

Answer:
d. $180

Explanation:
From the given data,
Shelby has ten $5 bills and thirteen $10 bills = (10 x $5) + (13 x $10)
= ($50) + ($130)
=$180
Total money with Shelby = $180

Page No. 169

Question 1.
Explain how to find 40 × 50 using mental math.
Type below:
__________

Answer:
200

Explanation:
40 x 50
By using mental math
4 x 5 = 20
40 x 50 = 200

Question 2.
What is the first step in estimating 56 × 27?
Type below:
__________

Answer:
18 centimeters

Explanation:
Round to the nearest values.
So, the first step of the estimated 56 x 27 is rounding to the nearest values that is 60 x 30

Choose a method. Then find the product.

Question 3.
35 × 10 = _____

Answer:
350

Explanation:
By using the place value method
You can take 10 as 1 ten
35 x 10 = 35 x 1 ten
= 35 ten
35 x 10 = 350

Question 4.
19 × 20 = _____

Answer:
380

Explanation:
19 x 20
By using the associative property
You can think of 20 as (2 x 10)
19 x 20 = 19 x (2 x 10)
= (19 x 2) x 10
= 38 x 10
19 x 20 = 380

Question 5.
12 × 80 = _____

Answer:
960

Explanation:
Use the halving and doubling strategy
half of the 80 to make the problem simpler
80/ 2 = 40
Multiply 40 with 12
40*12 = 480
Double the 480
2*480= 960
12*80 = 960

Question 6.
70 × 50 = _____

Answer:
3,500

Explanation:
70 x 50
By using the place value method
You can take 50 as 5 tens
70 x 50 = 70 x 5 tens
= 350 tens
70 x 50 = 3,500

Question 7.
58 × 40 = _____

Answer:
2,320

Explanation:
By using the associative property
You can think of 40 as (4 x 10)
58 x 40 = 58 x (4 x 10)
= (58 x 4) x 10
= 232 x 10
58 x 40 = 2,320

Question 8.
30 × 40 = _____

Answer:
1,200

Explanation:
Use the halving and doubling strategy
half of the 40 to make the problem simpler
40/ 2 = 20
Multiply 20 with 30
20*30 = 600
Double the 600
2*600= 1200
30*40 = 1,200

Question 9.
14 × 60 = _____

Answer:
840

Explanation:
By using the place value method
You can take 60 as 6 tens
14 x 60 = 14 x 6 tens
= 84 tens
14 x 60 = 840

Question 10.
20 × 30 = _____

Answer:
600

Explanation:
By using the associative property
You can think of 30 as (3 x 10)
20 x 30 = 20 x (3 x 10)
= (20 x 3) x 10
= 60 x 10
20 x 30 = 600

Question 11.
16 × 90 = _____

Answer:
1,440

Explanation:
Use the halving and doubling strategy
half of the 90 to make the problem simpler
90/ 2 = 45
Multiply 45 with 16
16*45 = 720
Double the 720
2*720= 1440
16*90 = 1,440

Estimate the product. Choose a method.

Question 12.
81 × 38
Estimate: _____

Answer:
3,200

Explanation:
Round to the nearest tens.
81 is close to 80; 38 is close to 40;
80 x 40 = 3,200

Question 13.
16 × $59
Estimate: $ _____

Answer:
$120

Explanation:
Round to the nearest tens.
16 is close to 20; $59 is close to $60;
Use the mental math to find the product of 20 x $60
2 x $6 = $12
20 x $60 = $120
Estimated product of 16 x $59 = $120

Question 14.
43 × 25
Estimate: _____

Answer:
1,000

Explanation:
Round to the nearest tens.
43 is close to 40; 25 is close to 25;
40 x 25 = 1000
Estimated product of 43 x 25 = 1,000

Question 15.
76 × 45
Estimate: _____

Answer:
3,200

Explanation:
Round to the nearest tens.
76 is close to 80; 45 is close to 40;
Use the mental math
8 x 4 = 32
80 x 40 = 3200
So, the estimated product of 76 x 45 = 3,200

Question 16.
65 × $79
Estimate: _____

Answer:
$4,800

Explanation:
Round to the nearest tens.
65 is close to 60; $79 is close to $80;
Use the mental math
6 x $8 = $48
60 x $80 = $4800
So, estimated product of 65 x $79 = $4,800

Question 17.
92 × 38
Estimate: _____

Answer:
3,600

Explanation:
Round to the nearest tens.
92 is close to 90; 38 is close to 40;
Use the mental math, then
9 x 4 = 36
90 x 40 = 3,600
So, estimated product of 92 x 38 = 3,600

Question 18.
37 × 31
Estimate: _____

Answer:
1,200

Explanation:
Round to the nearest tens.
37 is close to 40; 31 is close to 30;
Use the mental math, then
4 x 3 = 12
40 x 30 = 1,200
So, estimated product of 37 x 31 = 1,200

Question 19.
26 × $59
Estimate: _____

Answer:
$1,800

Explanation:
Round to the nearest tens.
26 is close to 30; $59 is close to $60;
Use the mental math, then
3 x $6 = $18
30 x $60 = $1,800
So, estimated product of 26 x $59 = $1,800

Question 20.
54 × 26
Estimate: _____

Answer:
18 centimeters

Explanation:
Round to the nearest tens.
54 is close to 50; 26 is close to 30;
Use the mental math
5 x 3 = 15
50 x 30 = 1,500
So, estimated product of 54 x 26 = 1,500

Question 21.
52 × 87
Estimate: _____

Answer:
4,500

Explanation:
Round to the nearest tens.
52 is close to 50; 87 is close to 90;
Use the mental math
5 x 9 = 45
50 x 90 = 4500
So, estimated product of 52 x 87 = 4,500

Question 22.
39 × 27
Estimate: _____

Answer:
18 centimeters

Explanation:
Round to the nearest tens.
39 is close to 40; 27 is close to 30;
Use the mental math
4 x 3 = 12
40 x 30 = 1,200
So, estimated product of 39 x 27 = 1,200

Question 23.
63 × 58
Estimate: _____

Answer:
3,600

Explanation:
Round to the nearest tens.
63 is close to 60; 58 is close to 60;
Use the mental math
6 x 6 = 36
60 x 60 = 3,600
So, estimated product of 63 x 58 = 3,600

Page No. 170

Question 24.
Ms. Traynor’s class is taking a field trip to the zoo. The trip will cost $26 for each student. There are 22 students in her class. What is a good estimate for the cost of the students’ field trip?
Type below:
__________

Answer:
18 centimeters

Explanation:
As per the given data,
Ms. Traynor’s class is taking a field trip to the zoo
Cost of the trip for each student = $26
Total number of students in her class = 22
The total cost of the trip for students = $26 x 22
Round to the nearest tens.
26 is close to 30; 22 is close to 20;
Use the mental math
$3 x 2 = $6
$30 x 20 = $600
Then, the total estimated cost for the trip for students = $600

Go Math Grade 4 Chapter 3 Test Pdf Question 25.
Tito wrote the following on the board. What is the unknown number?
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 21
______

Answer:
400

Explanation:
An unknown number is 50 x 8 = 400

Question 26.
What are the partial products that result from multiplying 15 × 32?
Type below:
__________

Answer:
Partial products are 300, 150, 20, 10

Explanation:
Chapter 3 - Common core - Image 36
Partial products are 300, 150, 20, 10

Question 27.
A city bus company sold 39 one-way tickets and 20 round-trip tickets from West Elmwood to East Elmwood. One-way tickets cost $14. Round trip tickets cost $25. How much money did the bus company collect?
$ ______

Answer:
$1,046

Explanation:
As per the given data,
Number of one – way tickets sold by the city bus company = 39
Round trip tickets from west Elmwood to east Elmwood = 20
Cost of one – way tickets = $14
Then, cost of 39 one – way tickets = 39 x $14 =$546
Cost of round trip tickets = $25
Then, cost of 20 round trip tickets = $25 x 20 = $500
Total money collected by the city bus company = $546 + $500 = $1,046

Page No. 173

Question 1.
Look at the problem. Complete the sentences.
Multiply ____ and ____ to get 0.
Multiply ____ and ____ to get 1,620.
Add the partial products.
0 + 1,620 = ____
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 22
_____

Answer:
Multiply 27 and 0 to get 0.
Multiply 27 and 6 to get 1,620.
Add the partial products. 0 + 1,620 = 1,620.

Estimate. Then find the product.

Question 2.
6 8
× 5 3
——-
Estimate: _________
Product: __________

Answer:
Estimate: 3,500
Product: 3,604

Explanation:
68 is closer to 70 and 53 is closer to 50
Estimate: 70 x 50 = 3,500
60 x 53 = 3180
8 x 53 = 424
3180 + 424 = 3604
Product 3,604

Question 3.
6 1
× 5 4
——-
Estimate: _________
Product: __________

Answer:
Estimate: 3,000
Product: 3,294

Explanation:
61 is closer to 60 and 54 is closer to 50
Estimate: 60 x 50 = 3,000
60 x 54 = 3240
1 x 54 = 54
3240 + 54 = 3294
Product 3,294

Question 4.
9 0
× 2 7
——-
Estimate: _________
Product: __________

Answer:
Estimate: 2,700
Product: 2,430

Explanation:
27 is closer to 30
Estimate: 90 x 30 = 2,700
90 x 27 = 2430
Product 2,430

Question 5.
3 0
× 4 7
——-
Estimate: _________
Product: __________

Answer:
Estimate: 1,500
Product: 1,410

Explanation:
47 is closer to 50
Estimate: 30 x 50 = 1,500
30 x 47 = 1410
Product 1,410

Question 6.
7 8
× 5 6
——-
Estimate: _________
Product: __________

Answer:
Estimate: 4,800
Product: 4,368

Explanation:
78 is closer to 80 and 56 is closer to 60
Estimate: 80 x 60 = 4,800
70 x 56 = 3920
8 x 56 = 448
3920 + 448 = 4368
Product 4,368

Question 7.
2 7
× 2 5
——-
Estimate: _________
Product: __________

Answer:
Estimate: 600
Product: 675

Explanation:
27 is closer to 30 and 25 is closer to 20
Estimate: 30 x 20 = 600
20 x 25 = 500
7 x 25 = 175
500 + 175 = 675
Product 675

Practice: Copy and Solve Estimate. Then find the product.

Question 8.
34 × 65
Estimate: _________
Product: __________

Answer:
Estimate: 1,800
Product: 2,210

Explanation:
34 is closer to 30 and 65 is closer to 60
Estimate: 30 x 60 = 1,800
30 x 65 = 1950
4 x 65 = 260
1950 + 260 = 2210
Product 2,210

Question 9.
42 × $13
Estimate: $ _________
Product: $ _________

Answer:
Estimate: $400
Product: $546

Explanation:
42 is closer to 40 and 13 is closer to 10
Estimate: 40 x 10 = 400
40 x $13 = $520
2 x $13= $26
$520 + $26 = $546
Product $546

Question 10.
60 × 17
Estimate: _________
Product: __________

Answer:
Estimate: 1,200
Product: 1,020

Explanation:
17 is closer to 20
Estimate: 60 x 20 = 1,200
60 x 17 = 1020
Product = 1,020

Question 11.
62 × 45
Estimate: _________
Product: __________

Answer:
Estimate: 2,400
Product: 2,790

Explanation:
62 is closer to 60 and 45 is closer to 40
Estimate: 60 x 40 = 2,400
60 x 45 = 2700
2 x 45= 90
2700 + 90 = 2790
Product 2,790

Question 12.
57 × $98
Estimate: $ _________
Product: $ _________

Answer:
Estimate: 6,000
Product: 5,586

Explanation:
57 is closer to 60 and 98 is closer to 100
Estimate: 60 x 100 = 6,000
50 x 98 = 4900
7 x 98= 686
4900 + 686 = 5586
Product 5,586

Look for a Pattern Algebra Write a rule for the pattern.
Use your rule to find the unknown numbers.

Question 13.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 23
Rule _____________
Type below:
_________

Answer:
Chapter 3 - Common core - Image 37

Explanation:
1 hour = 60 min
Then, 5hr = 5 x 60 = 300 min
10hr = 10 x 60 = 600 min
15hr = 15 x 60 = 900 min
20hr = 20 x 60 = 1200 min
25hr = 25 x 60 = 1500 min

Question 14.
Owners of a summer camp are buying new cots for their cabins. There are 16 cabins. Each cabin needs 6 cots. Each cot costs $92. How much will the new cots cost?
$ _______

Answer:
$8,832

Explanation:
As per the given data,
Owners pf a summer camp are buying new cots for their cabins
Number of cabins = 16
Each cabin needs 6 cots
Then, total cots = 16 x 6 = 96
Each cot cost = $92
Then, cost for total cots = $92 x 96
92 is closer to 90 and 96 is closer to 100
Estimate = 90 x 100 = 9,000
90 x 96 = 8640
2 x 96 = 192
8640 + 192 = 8832
Product = 8,832

Question 15.
A theater has 28 rows of 38 seats downstairs and 14 rows of 26 seats upstairs. How many seats does the theater have?
______ seats

Answer:
1,428 seats

Explanation:
As per the given data,
A theatre has 28 rows of 38 seats downstairs = 28 x 38 = 1064
14 rows of 26 seats upstairs = 14 x 26 = 364
Total number of seats = 1064 + 364 = 1,428 seats

Page No. 174

Question 16.
Machine A can label 11 bottles in 1 minute. Machine B can label 12 bottles in 1 minute. How many bottles can both machines label in 15 minutes?
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 24
a. What do you need to know?
Type below:
__________

Answer:
number of bottles labeled by Machine A and Machine B in 15 minutes

Question 16.
b. What numbers will you use?
Type below:
__________

Answer:
15x 11 and 15 x 12

Question 16.
c. Tell why you might use more than one operation to solve the problem.
Type below:
__________

Answer:
To find out the total number of bottle made by both machines A & B

Question 16.
d. Solve the problem.
So, both machines can label ____ bottles in ____ minutes.
Type below:
__________

Answer:
Machine A can label 11 bottles in 1 minute
Then, the number of bottles labeled by machine A in 15 minutes = 15 x 11 = 165
Machine B can label 12 bottles in 1 minute
Then, number of bottles labelled by Machine B in 15 minutes = 15 x 12 = 180
Total bottles labelled by both the machines in 15 minutes = 165 + 180 = 345

Question 17.
Make Sense of Problems
A toy company makes wooden blocks. A carton holds 85 blocks. How many blocks can 19 cartons hold?
______ blocks

Answer:
1,615 blocks

Explanation:
From the given data,
A toy company makes wooden blocks
A carton holds 85 blocks
Then, number of blocks hold by 19 cartons = 19 x 85 = 1615
Total number of blocks held by 19 cartons = 1,615

Question 18.
A company is packing cartons of candles. Each carton can hold 75 candles. So far, 50 cartons have been packed, but only 30 cartons have been loaded on a truck. How many more candles are left to load on the truck?
______ candles

Answer:
1,500 candles

Explanation:
As per the given data,
A company is packing cartons of candles
Each carton can hold 75 candles
Then, number of candles hold by 50 cartons = 50 x 75 = 3750
Number of candles hold by 30 cartons = 30 x 75 = 2250
50 cartons have been packed, but only 30 cartons have been loaded on a truck
Remaining candles are left to load on truck = 3750 – 2250 = 1,500

Question 19.
Mr. Garcia’s class raised money for a field trip to the zoo. There are 23 students in his class. The cost of the trip will be $17 for each student. What is the cost for all the students? Explain how you found your answer.
$ ______

Answer:
$391

Explanation:
As per the given data,
Mr. Garcia’s class raised money for a field trip to the zoo
Total number of students in his class = 23 students
Cost of the trip for each student = $17
Then, total cost for all the students = $17 x 23 = $391

Common Core – Page No. 175

Multiply with Regrouping
Estimate. Then find the product.

Question 1.
Estimate: 2,700
Think: 87 is close to 90 and 32 is close to 30.
90 × 30 = 2,700
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Common Core img 25

Answer:
2,784

Explanation:
Think: 87 is close to 90 and 32 is close to 30.
90 × 30 = 2,700
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Common Core img 25

Question 2.
7 3
× 2 8
——–
Estimate: ______
Product: _______

Answer:
Estimate: 2,100
Product: 2,044

Explanation:
Estimate: 73 is close to 70; 28 is close to 30.
So, 70 x 30 = 2,100.
Product: Write 73 as 7 tens and 3 ones. Multiply 28 by 3 ones.
2
28
x 73
——–
84 <– 3 x 28
Multiply 28 by 7 tens
5
28
x 73
——–
1960 <– 70 x 28
Add the partial products.
84 + 1960 = 2,044.
So, 73 x 28 = 2,044.

Go Math Grade 4 Chapter 3 Answer Key Pdf Question 3.
4 8
× 3 8
——–
Estimate: ______
Product: _______

Answer:
Estimate: 2,000
Product: 1,824

Explanation:
48 is close to 50 and 38 is close to 40.
Estimate: 50 × 40 = 2,000
40 x 38 = 1520
8 x 38 = 304
1520 + 304 = 1824.
Product: 1,824

Question 4.
5 9
× 5 2
——–
Estimate: ______
Product: _______

Answer:
Estimate: 3,000
Product: 3,068

Explanation:
59 is close to 60 and 52 is close to 50.
Estimate: 60 × 50 = 3,000
50 x 52 = 2600
9 x 52 = 468
2600 + 468 = 3068.
Product: 3,068.

Question 5.
8 4
× 4 0
——–
Estimate: ______
Product: _______

Answer:
Estimate: 3,200
Product: 3,360

Explanation:
84 is close to 80 and 40 is close to 40.
Estimate: 80 × 40 = 3,200
80 x 40 = 3,200
4 x 40 = 160
3200 + 160 = 3,360.
Product: 3,360.

Question 6.
8 3
× 7 7
——–
Estimate: ______
Product: _______

Answer:
Estimate: 6,400
Product: 6,391

Explanation:
83 is close to 80 and 77 is close to 80.
Estimate: 80 × 80 = 6,400
80 x 77 = 6,160
3 x 77 = 231
6,160 + 231 = 6,391.
Product: 6,391.

Question 7.
9 1
× 1 9
——–
Estimate: ______
Product: _______

Answer:
Estimate: 1,800
Product: 1,729

Explanation:
91 is close to 90 and 19 is close to 20.
Estimate: 90 × 20 = 1,800
90 x 19 = 1,710
1 x 19 = 19
1,710+ 19 = 1,729.
Product: 1,729.

Problem Solving

Question 8.
Baseballs come in cartons of 84 baseballs. A team orders 18 cartons of baseballs. How many baseballs does the team order?
_______ baseballs

Answer:
1,512 baseballs

Explanation:
To find total baseballs, 84 x 18
80 x 18 = 1,440
4 x 18 = 72
84 x 18 = 1,512

Question 9.
There are 16 tables in the school lunch room. Each table can seat 22 students. How many students can be seated at lunch at one time?
_______ students

Answer:
352 students

Explanation:
Total Students = 16 x 22
10 x 22 = 220
6 x 22 = 132
220 + 132 = 352.
352 students can be seated at lunch at one time

Common Core – Page No. 176

Lesson Check

Question 1.
The art teacher has 48 boxes of crayons. There are 64 crayons in each box. Which is the best estimate of the number of crayons the art teacher has?
Options:
a. 2,400
b. 2,800
c. 3,000
d. 3,500

Answer:
c. 3,000

Explanation:
1. Total number of crayons = 48 x 64
48 is close to 50; 64 is close to 60
50 x 60 = 3,000.
The art teacher has about to 3, 000 crayons.

Question 2.
A basketball team scored an average of 52 points in each of 15 games. How many points did the team score in all?
Options:
a. 500
b. 312
c. 780
d. 1,000

Answer:
c. 780

Explanation:
Total Points = 52 x 15
50 x 15 = 750
2 x 15 = 30
750 + 30 = 780.
The basketball team scored 780 points in total.

Spiral Review

Question 3.
One Saturday, an orchard sold 83 bags of apples. There are 27 apples in each bag. Which expression represents the total number of apples sold?
Options:
a. 16 + 6 + 56 + 21
b. 160 + 60 + 56 + 21
c. 160 + 60 + 560 + 21
d. 1,600 + 60 + 560 + 21

Answer:
d. 1,600 + 60 + 560 + 21

Explanation:
Total number of apples sold = 83 x 27
80 x 27 = 2,160
3 x 27 = 81
2,160 + 81 = 2,241.
The total number of apples sold = 2,241.
16 + 6 + 56 + 21 = 99 not equal to 2,241
160 + 60 + 56 + 21 = 297 not equal to 2,241
160 + 60 + 560 + 21 = 801 not equal to 2,241
1,600 + 60 + 560 + 21 = 2,241 equal to 2,241
1,600 + 60 + 560 + 21 = 2,241 is correct.

Question 4.
Hannah has a grid of squares that has 12 rows with 15 squares in each row. She colors 5 rows of 8 squares in the middle of the grid blue. She colors the rest of
the squares red. How many squares does Hannah color red?
Options:
a. 40
b. 140
c. 180
d. 220

Answer:
b. 140

Explanation:
Hannah has a grid of squares that has 12 rows with 15 squares in each row = 12 x 15 = 180.
The grid of squares in blue = 5 x 8 = 40.
The grid of squares in red = 180 – 40 = 140.

Question 5.
Gabriella has 4 times as many erasers a Leona. Leona has 8 erasers. How many erasers does Gabriella have?
Options:
a. 32
b. 24
c. 12
d. 2

Answer:
a. 32

Explanation:
Gabriella have 4 x 8 = 32 erasers.

Question 6.
Phil has 3 times as many rocks as Peter. Together, they have 48 rocks. How many more rocks does Phil have than Peter?
Options:
a. 36
b. 24
c. 16
d. 12

Answer:
b. 24

Explanation:
Phil has 3 times as many rocks as Peter. Together, they have 48 rocks
If Peter has x rocks, Phil has 3x rocks
3x + x = 48.
4x = 48.
x = 48/4 = 12.
Peter has 12 rocks. Phil has 3 x 12 = 36 rocks.
Phil has 36 – 12 = 24 more rocks than Peter.

Page No. 179

Question 1.
Find the product.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 26
Estimate: ______
Product: _______

Answer:
Estimate: 1,500
Product: 1,566

Explanation:
54 x 29
Estimate: Think 54 is close to 50; 29 is close to 30.
50 x 30 = 1,500
Product:
20 x 5 tens = 100 tens
20 x 4 ones = 80 ones
9 x 5 tens = 45 tens
9 x 4 ones = 36 ones.
Add partial products.
1000 + 80 + 450 + 36 = 1,566.

Estimate. Then choose a method to find the product.

Question 2.
3 6
× 1 4
——-
Estimate: ______
Product: _______

Answer:
Estimate: 400
Product: 504

Explanation:
36 x 14
Estimate: Think 36 is close to 40; 14 is close to 10.
40 x 10 = 400
Product:
10 x 3 tens = 30 tens
10 x 6 ones = 60 ones
4 x 3 tens = 12 tens
4 x 6 ones = 24 ones.
Add partial products.
300 + 60 + 120 + 24 = 504.

Go Math Grade 4 Chapter 3 Answer Key Question 3.
6 3
× 4 2
——-
Estimate: ______
Product: _______

Answer:
Estimate: 2,400
Product: 2646

Explanation:
63 x 42
Estimate: Think 63 is close to 60; 42 is close to 40.
60 x 40 = 2400
Product:
40 x 6 tens = 240 tens
40 x 3 ones = 120 ones
2 x 6 tens = 12 tens
2 x 3 ones = 6 ones.
Add partial products.
2400 + 120 + 120 + 6 = 2646.

Question 4.
8 4
× 5 3
——-
Estimate: ______
Product: _______

Answer:
Estimate: 4,000
Product: 4,452

Explanation:
84 x 53
Estimate: Think 84 is close to 80; 53 is close to 50.
80 x 50 = 4,000
Product:
50 x 8 tens = 400 tens
50 x 4 ones = 200 ones
3 x 8 tens = 24 tens
3 x 4 ones = 12 ones.
Add partial products.
4000 + 200 + 240 + 12 = 4,452.

Question 5.
7 1
× 1 3
——-
Estimate: ______
Product: _______

Answer:
Estimate: 700
Product: 923

Explanation:
71 x 13
Estimate: Think 71 is close to 70; 13 is close to 10.
70 x 10 = 700
Product:
10 x 7 tens = 70 tens
10 x 1 ones = 10 ones
3 x 7 tens = 21 tens
3 x 1 ones = 3 ones.
Add partial products.
700 + 10 + 210 + 3 = 923.

Practice: Copy and Solve Estimate. Find the product.

Question 6.
29 × $82
Estimate: $ _______
Product: $ _______

Answer:
Estimate: $2,400
Product: $2,378

Explanation:
29 x $82
Estimate: Think 29 is close to 30; $82 is close to $80.
30 x $80 = $2,400
Product:
$80 x 2 tens = $160 tens
$80 x 9 ones = $720 ones
$2 x 2 tens = $4 tens
$2 x 9 ones = $18 ones.
Add partial products.
$1600 + $720 + $40 + $18 = $2,378.

Question 7.
57 × 79
Estimate: _______
Product: _______

Answer:
Estimate: 4,800
Product: 4,503

Explanation:
57 x 79
Estimate: Think 57 is close to 60; 79 is close to 80.
60 x 80 = 4,800
Product:
70 x 5 tens = 350 tens
70 x 7 ones = 490 ones
9 x 5 tens = 45 tens
9 x 7 ones = 63 ones.
Add partial products.
3500 + 490 + 450 + 63 = 4,503.

Question 8.
80 × 27
Estimate: _______
Product: _______

Answer:
Estimate: 2,400
Product: 2,160

Explanation:
80 x 27
Estimate: Think 27 is close to 30.
30 x 80 = 2,400
Product:
20 x 8 tens = 160 tens
20 x 0 ones = 0 ones
7 x 8 tens = 56 tens
7 x 0 ones = 0 ones.
Add partial products.
1600 + 0 + 560 + 0 = 2,160.

Question 9.
32 × $75
Estimate: $ _______
Product: $ _______

Answer:
Estimate: $2,100
Product: $2,400

Explanation:
32 × $75
Estimate: Think 32 is close to 30; $75 is close to $70.
30 x $70 = $2,100
Product:
$70 x 3 tens = $210 tens
$70 x 2 ones = $140 ones
$5 x 3 tens = $15 tens
$5 x 2 ones = $10 ones.
Add partial products.
$2100 + $140 + $150 + $10 = $2,400.

Question 10.
55 × 48
Estimate: _______
Product: _______

Answer:
Estimate: 2,750
Product: 2,640

Explanation:
55 × 48
Estimate: Think 48 is close to 50.
55 x 50 = 2,750
Product:
40 x 5 tens = 200 tens
40 x 5 ones = 200 ones
8 x 5 tens = 40 tens
8 x 5 ones = 40 ones.
Add partial products.
2000 + 200 + 400 + 40 = 2,640.

Question 11.
19 × $82
Estimate: $ _______
Product: $ _______

Answer:
Estimate: $1,600
Product: $1,558

Explanation:
19 × $82
Estimate: Think 19 is close to 20; $82 is close to $80.
20 x $80 = $1,600
Product:
$80 x 1 tens = $80 tens
$80 x 9 ones = $720 ones
$2 x 1 tens = $2 tens
$2 x 9 ones = $18 ones.
Add partial products.
$800 + $720 + $20 + $18 = $1,558.

Question 12.
25 × $25
Estimate: $ _______
Product: $ _______

Answer:
Estimate: $625
Product: $625

Explanation:
25 × $25
Estimate:
25 x $25 = $625
Product:
$20 x 2 tens = $40 tens
$20 x 5 ones = $100 ones
$5 x 2 tens = $10 tens
$5 x 5 ones = $25 ones.
Add partial products.
$400 + $100 + $100 + $25 = $625.

Question 13.
41 × 98
Estimate: _______
Product: _______

Answer:
Estimate: 4,000
Product: 4,018

Explanation:
41 × 98
Estimate: Think 41 is close to 40; 98 is close to 100.
40 x 100 = 4,000
Product:
90 x 4 tens = 360 tens
90 x 1 ones = 90 ones
8 x 4 tens = 32 tens
8 x 1 ones = 8 ones.
Add partial products.
3600 + 90 + 320 + 8 = 4,018.

Identify Relationships Algebra Use mental math to find the number.

Question 14.
30 × 14 = 420, so
30 × 15 = ______

Answer:
30 × 15 = 450

Explanation:
30 × 15 = 30 + 420
30 × 15 = 450

Question 15.
25 × 12 = 300, so
25 × ______ = 350

Answer:
25 x 14 = 350

Explanation:
25 × 12 = 300
For every next multiplication, the product value is increased by 25.
25 x 13 = 325.
25 x 14 =350.

Question 16.
The town conservation manager bought 16 maple trees for $26 each. She paid with five $100 bills. How much change will the manager receive? Explain.
$ ______

Answer:
$84

Explanation:
The town conservation manager bought 16 maple trees for $26 each = 16 x $26 = $416.
She paid with five $100 bills = 5 x $100 = $500.
The manager receive = $500 – $416 = $84.

Question 17.
Each of 25 students in Group A read for 45 minutes. Each of 21 students in Group B read for 48 minutes. Which group read for more minutes? Explain.
_________

Answer:
Group A read for more minutes than Group B.

Explanation:
Group A read for 25 x 45 = 1125 minutes.
Group B read for 21 x 48 = 1008 minutes.
Group A read for more minutes than Group B.

Page No. 180

Question 18.
Martin collects stamps. He counted 48 pages in his collector’s album. The first 20 pages each have 35 stamps in 5 rows. The rest of the pages each have 54 stamps. How many stamps does Martin have in his album?
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 27
a. What do you need to know?
Type below:
_________

Answer:
The total stamps in the first 20 pages + The total stamps in the remaining pages.

Question 18.
b. How will you use multiplication to find the number of stamps?
Type below:
_________

Answer:
The first 20 pages each have 35 stamps in 5 rows.
So, 35 x 5 = 175 stamps.

Question 18.
c. Tell why you might use addition and subtraction to help solve the problem.
Type below:
_________

Answer:
As mentioned that the number of stamps available in the first 20 pages and the number of stamps available in the rest of the pages. We need to add all pages to get 48 pages stamps.

Question 18.
d. Show the steps to solve the problem.
Type below:
_________

Answer:
Martin has 48 pages in his collector’s album.
The first 20 pages each have 35 stamps in 5 rows.
So, 35 x 5 = 175 stamps.
The first 20 pages have 175 stamps.
The rest of the pages each have 54 stamps.
So, total stamps = 175 + 54 = 229 stamps.

Question 18.
e. Complete the sentences.
Martin has a total of _____ stamps on the first 20 pages.
There are _____ more pages after the first 20 pages in Martin’s album.
There are _____ stamps on the rest of the pages.
There are _____ stamps in the album.
Type below:
_________

Answer:
Martin has a total of __175___ stamps on the first 20 pages.
There are __24___ more pages after the first 20 pages in Martin’s album.
There are __54___ stamps on the rest of the pages.
There are ___229__ stamps in the album.

Question 19.
Select the expressions that have the same product as 35 × 17. Mark all that apply.
Options:
a. (30 × 10) + (30 × 7) + (5 × 10) + (5 × 7)
b. (30 × 17) + (5 × 17)
c. (35 × 30) + (35 × 5) + (35 × 10) + (35 × 7)
d. (35 × 10) + (35 × 7)
e. (35 × 10) + (30 × 10) + (5 × 10) + (5 × 7)
f. (35 × 30) + (35 × 5)

Answer:
a. (30 × 10) + (30 × 7) + (5 × 10) + (5 × 7)
b. (30 × 17) + (5 × 17)
d. (35 × 10) + (35 × 7)

Explanation:
35 × 17
30 x 10 =300
30 x 7 = 210
5 x 10 = 50
5 x 7 = 35
300 + 210 + 50 + 35 = 595.
a. (30 × 10) + (30 × 7) + (5 × 10) + (5 × 7) = 300 + 210 + 50 + 35 = 595 equal to 595.
b. (30 × 17) + (5 × 17) = 510 + 85 = 595 equal to 595.
c. (35 × 30) + (35 × 5) + (35 × 10) + (35 × 7) = 1050 + 175 + 350 + 245 = 1820 not equal to 595.
d. (35 × 10) + (35 × 7) = 350 + 245 = 595 equal to 595
e. (35 × 10) + (30 × 10) + (5 × 10) + (5 × 7) = 350 + 300 + 50 + 35 = 735 not equal to 595.
f. (35 × 30) + (35 × 5) = 1050 + 175 = 1,225 not equal to 595.

Common Core – Page No. 181

Choose a Multiplication Method

Estimate. Then choose a method to find the product.

Question 1.
Estimate: 1,200
3 1
× 4 3
——-
9 3
+ 1, 2 4 0
————
1, 3 3 3

Answer:
Estimate: 1,200
Product: 1, 3 3 3

Explanation:
Estimate: 1,200
3 1
× 4 3
——-
9 3
+ 1, 2 4 0
————
1, 3 3 3

Question 2.
6 7
× 8 5
——-
Estimate: _____
Product: ______

Answer:
Estimate: 6,300
Product: 5,695

Explanation:
Estimate: 67 is close to 70; 85 is close to 90.
70 x 90 = 6,300.
Product: 67 x 85
80 x 6 tens = 480 tens
80 x 7 ones = 560 ones
5 x 6 tens = 30 tens
5 x 7 ones = 35 ones.
Add partial products.
4800 + 560 + 300 + 35 = 5,695.

Question 3.
6 8
× 3 8
——-
Estimate: _____
Product: ______

Answer:
Estimate: 2,800
Product: 2,584

Explanation:
Estimate: 68 is close to 70; 38 is close to 40.
70 x 40 = 2,800.
Product: 68 x 38
30 x 6 tens = 180 tens
30 x 8 ones = 240 ones
8 x 6 tens = 48 tens
8 x 8 ones = 64 ones.
Add partial products.
1800 + 240 + 480 + 64 = 2,584.

Question 4.
9 5
× 1 7
——-
Estimate: _____
Product: ______

Answer:
Estimate: 1,700
Product: 1,615

Explanation:
Estimate: 95 is close to 100.
100 x 17 = 1,700.
Product: 95 x 17
10 x 9 tens = 90 tens
10 x 5 ones = 50 ones
7 x 9 tens = 63 tens
7 x 5 ones = 35 ones.
Add partial products.
900 + 50 + 630 + 35 = 1,615.

Question 5.
4 9
× 5 4
——-
Estimate: _____
Product: ______

Answer:
Estimate: 2,500
Product: 2,646

Explanation:
Estimate: 49 is close to 50; 54 is close to 50.
50 x 50 = 2,500.
Product: 49 x 54
50 x 4 tens = 200 tens
50 x 9 ones = 450 ones
4 x 4 tens = 16 tens
4 x 9 ones = 36 ones.
Add partial products.
2000 + 450 + 160 + 36 = 2,646.

Go Math Grade 4 Answer Key Chapter 3 Question 6.
9 1
× 2 6
——-
Estimate: _____
Product: ______

Answer:
Estimate: 2,700
Product: 2,366

Explanation:
Estimate: 91 is close to 90; 26 is close to 30.
90 x 30 = 2,700.
Product: 49 x 54
20 x 9 tens = 180 tens
20 x 1 ones = 20 ones
6 x 9 tens = 54 tens
6 x 1 ones = 6 ones.
Add partial products.
1800 + 20 + 540 + 6 = 2,366.

Question 7.
8 2
× 1 9
——-
Estimate: _____
Product: ______

Answer:
Estimate: 1,600
Product: 1,558

Explanation:
Estimate: 82 is close to 80; 19 is close to 20.
80 x 20 = 1,600.
Product: 82 x 19
10 x 8 tens = 80 tens
10 x 2 ones = 20 ones
9 x 8 tens = 72 tens
9 x 2 ones = 18 ones.
Add partial products.
800 + 20 + 720 + 18 = 1,558.

Question 8.
4 6
× 2 7
——-
Estimate: _____
Product: ______

Answer:
Estimate: 1,500
Product: 1,242

Explanation:
Estimate: 46 is close to 50; 27 is close to 30.
50 x 30 = 1,500.
Product: 46 x 27
20 x 4 tens = 80 tens
20 x 6 ones = 120 ones
7 x 4 tens = 28 tens
7 x 6 ones = 42 ones.
Add partial products.
800 + 120 + 280 + 42 = 1,242.

Question 9.
4 1
× 3 3
——-
Estimate: _____
Product: ______

Answer:
Estimate: 1,200
Product: 1,353

Explanation:
Estimate: 41 is close to 40; 33 is close to 30.
40 x 30 = 1,200.
Product: 41 x 33
30 x 4 tens = 120 tens
30 x 1 ones = 30 ones
3 x 4 tens = 12 tens
3 x 1 ones = 3 ones.
Add partial products.
1200 + 30 + 120 + 3 = 1,353.

Question 10.
9 7
× 1 3
——-
Estimate: _____
Product: ______

Answer:
Estimate: 1,300
Product: 1,261

Explanation:
Estimate: 97 is close to 100.
100 x 13 = 1,300.
Product: 97 x 13
10 x 9 tens = 90 tens
10 x 7 ones = 70 ones
3 x 9 tens = 27 tens
3 x 7 ones = 21 ones.
Add partial products.
900 + 70 + 270 + 21 = 1,261.

Question 11.
7 5
× 6 9
——-
Estimate: _____
Product: ______

Answer:
Estimate: 5,600
Product: 5,195

Explanation:
Estimate: 75 is close to 80; 69 is close to 70.
80 x 70 = 5,600.
Product: 75 x 69
60 x 7 tens = 420 tens
60 x 5 ones = 300 ones
9 x 7 tens = 63 tens
9 x 5 ones = 45 ones.
Add partial products.
4200 + 300 + 630 + 45 = 5,195.

Problem Solving

Question 12.
A movie theatre has 26 rows of seats. There are 18 seats in each row. How many seats are there in all?
______ seats

Answer:
468 seats

Explanation:
26 x 18 = 468 seats.
20 x 18 = 360
6 x 18 = 108
108+360 = 468.

Question 13.
Each class at Briarwood Elementary collected at least 54 cans of food during the food drive. If there are 29 classes in the school, what was the least number of
cans collected?
______ cans

Answer:
1,566 cans

Explanation:
Each class at Briarwood Elementary collected at least 54 cans of food.
If there are 29 classes in the school,
the least number of cans collected = 54 x 29 = 1,566 cans.

Common Core – Page No. 182

Lesson Check

Question 1.
A choir needs new robes for each of its 46 singers. Each robe costs $32. What will be the total cost for all 46 robes?
Options:
a. $1,472
b. $1,372
c. $1,362
d. $230

Answer:
a. $1,472

Explanation:
46 x $32
40 x $32 = $1,280
6 x $32 = $192
$1,280 + $192 = $1,472

Question 2.
A wall on the side of a building is made up of 52 rows of bricks with 44 bricks in each row. How many bricks make up the wall?
Options:
a. 3,080
b. 2,288
c. 488
d. 416

Answer:
b. 2,288

Explanation:
52 x 44
50 x 44 = 2,200
2 x 44 = 88
2,200 + 88 = 2,288.
2,288 bricks make up the wall.

Spiral Review

Question 3.
Which expression shows how to multiply 4 × 362 by using place value and expanded form?
Options:
a. (4 × 3) + (4 × 6) + (4 × 2)
b. (4 × 300) + (4 × 600) +(4 × 200)
c. (4 × 300) + (4 × 60) + (4 × 20)
d. (4 × 300) + (4 × 60) + (4 × 2)

Answer:
d. (4 × 300) + (4 × 60) + (4 × 2)

Explanation:
4 × 362 = 1,448
a. (4 × 3) + (4 × 6) + (4 × 2) = 12 + 24 + 8 = 44 not equal to 1,448.
b. (4 × 300) + (4 × 600) +(4 × 200) = 1200 + 2400 + 800 = 4,400 not equal to 1,448.
c. (4 × 300) + (4 × 60) + (4 × 20) = 1200 + 240 + 80 = 1,520 not equal to 1,448.
d. (4 × 300) + (4 × 60) + (4 × 2) = 1200 + 240 + 8 = 1,448 equal to 1,448.

Question 4.
Use the model below. What is the product 4 x 492?
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Common Core img 28
Options:
a. 16 + 36 + 8 = 60
b. 160 + 36 + 8 = 204
c. 160 + 360 + 8 = 528
d. 1,600 + 360 + 8 = 1,968

Answer:
d. 1,600 + 360 + 8 = 1,968

Explanation:
Grade 4 Chapter 3 Common Core 182
1,600 + 360 + 8 = 1,968

Question 5.
What is the sum 13,094 + 259,728?
Options:
a. 272,832
b. 272,822
c. 262,722
d. 262,712

Answer:
c. 262,722

Explanation:
13,094 + 259,728 = 262,722

Question 6.
During the 2008–2009 season, there were 801,372 people who attended the home hockey games in Philadelphia. There were 609,907 people who attended the home hockey games in Phoenix. How much greater was the home attendance in Philadelphia than in Phoenix that season?
Options:
a. 101,475
b. 191,465
c. 201,465
d. 202,465

Answer:
b. 191,465

Explanation:
801,372 – 609,907 = 191,465
Philadelphia attendance is 191,465 greater than in Phoenix that season.

Page No. 185

Question 1.
An average of 74 reports with bird counts were turned in each day in June. An average of 89 were turned in each day in July. How many reports were turned in for both months? (Hint: There are 30 days in June and 31 days in July.)
First, write the problem for June.
Type below:
__________

Answer:
Given that An average of 74 reports with bird counts was turned in each day in June.
For June Month, there are 30 days = 30 x 74 = 2,220.

Question 1.
Next, write the problem for July.
Type below:
__________

Answer:
An average of 89 reports with bird counts was turned in each day in July.
For July Month, there are 31 days = 31 x 89 = 2,759.

Question 1.
Last, find and add the two products.
____________ reports were turned in for both months.
Type below:
__________

Answer:
Given that An average of 74 reports with bird counts was turned in each day in June.
For June Month, there are 30 days = 30 x 74 = 2,220.
An average of 89 reports with bird counts was turned in each day in July.
For July Month, there are 31 days = 31 x 89 = 2,759.
Add two products to get the total number of reports that were turned in for both months.
2,220 + 2,759 = 4,979.

Question 2.
What if an average of 98 reports were turned in each day for the month of June? How many reports were turned in for June? Describe how your answer for June would be different.
______ reports

Answer:
720 more reports

Explanation:
Given that an average of 98 reports was turned in each day for the month of June.
June has 30 days.
Total number of reports were turned in for June = 30 x 98 = 2, 940.
From the above answer, 98 − 74 = 24. So, there would be 30 × 24, or 720 more reports.

Question 3.
There are 48 crayons in a box. There are 12 boxes in a carton. Mr. Johnson ordered 6 cartons of crayons for the school. How many crayons did he get?
______ crayons

Answer:
3,456 crayons

Explanation:
There are 48 crayons in a box.
There are 12 boxes in a carton.
So, 1 carton = 48 x 12 = 576 crayons.
If Mr. Johnson ordered 6 cartons of crayons for the school, 6 x 576 crayons = 3,456 crayons.
He gets 3,456 crayons.

Question 4.
Make Sense of Problems Each of 5 birdwatchers reported seeing 15 roseate spoonbills in a day. If they each reported seeing the same number of roseate spoonbills over 14 days, how many would be reported?
______ roseate spoonbills

Answer:
1,050 roseate spoonbills

Explanation:
Given that, 1 day –>5 birdwatchers reported 15 roseate spoonbills = 5 x 15 = 75 roseate spoonbills.
So, in 14 days –> 5 birdwatchers reported 75 x 14 = 1,050 roseate spoonbills.

Page No. 186

Question 5.
On each of Maggie’s bird-watching trips, she has seen at least 24 birds. If she has taken 4 of these trips each year over the past 16 years, at least how many birds has Maggie seen?
at least ______ birds

Answer:
Maggie seen 1,536 birds

Explanation:
Given that, 1 trip –> Maggie seen 24 birds.
For 1 year she goes for 4 bird-watching trips.
So, she has seen 4 x 24 = 96 birds for 1 year.
For 16 years, 16 x 96 = 1,536 birds have Maggie seen.

Question 6.
Make Sense of Problems There are 12 inches in a foot. In September, Mrs. Harris orders 32 feet of ribbon for the Crafts Club. In January, she orders 9 feet less. How many inches of ribbon does Mrs. Harris order? Explain how you found your answer.
______ inches

Answer:
660 inches

Explanation:
There are 12 inches in a foot.
In September, Mrs. Harris orders 32 feet of ribbon for the Crafts Club = 32 x 12 = 384.
In January, she orders 9 feet less = 32 – 9 = 23.
So, in January, she orders 23 x 12 = 276.
Mrs. Harris order 276 + 384 = 660 inches of ribbon in total.
(or)
9 less than 32 is 23, so I added 23 + 32 = 55.
Then, I multiplied 55 × 12 = 660.

Question 7.
Lydia is having a party on Saturday. She decides to write a riddle on her invitations to describe her house number on Cypress Street. Use the clues to find Lydia’s address.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 29
______ Cypress Street

Answer:
14827 Cypress Street

Explanation:
Given that tens digit is 5 less than 7 = 7 – 5 = 2. 2 is the tens digit.
The thousands digit is twice the digit in the tens place = 2 x 2 = 4.
The hundreds digit is the greatest even number that is less than 10 i.e, 8.
The ones digit is the product of 7 and 1 = 7 x 1 = 7.
The ten thousands digit is the difference between the hundreds digit and the ones digit. So, 8 – 7 = 1.
Add the products to get the final answer = 14827.
Lydia’s address ( house number ) is 14827 Cypress Street.

Question 8.
A school is adding 4 rows of seats to the auditorium. There are 7 seats in each row. Each new seat costs $99. What is the total cost for the new seats? Show your work.
$ ______

Answer:
$2,772

Explanation:
Given that A school is adding 4 rows of seats to the auditorium. There are 7 seats in each row.
So, 7 x 4 = 28 seats are available in an auditorium.
Each new seat costs $99.
28 x $99 = $2,772 for total cost of the new seats.

Common Core – Page No. 187

Problem Solving Multiply 2 – Digit numbers

Solve each problem. Use a bar model to help.

Question 1.
Mason counted an average of 18 birds at his bird feeder each day for 20 days. Gloria counted an average of 21 birds at her bird feeder each day for 16 days. How many more birds did Mason count at his feeder than Gloria counted at hers?
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Common Core img 30
Birds counted by Mason: 18 × 20 = 360
Birds counted by Gloria: 21 × 16 = 336
Draw a bar model to compare.
Subtract. 360 – 336 = 24
So, Mason counted 24 more birds.

Answer:
Birds counted by Mason: 18 × 20 = 360
Birds counted by Gloria: 21 × 16 = 336
Draw a bar model to compare.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Common Core img 30
Subtract. 360 – 336 = 24
So, Mason counted 24 more birds.

Question 2.
The 24 students in Ms. Lee’s class each collected an average of 18 cans for recycling. The 21 students in Mr. Galvez’s class each collected an average of 25 cans for recycling. How many more cans were collected by Mr. Galvez’s class than Ms. Lee’s class?
______ more cans

Answer:
The number of cans collected by Ms. Lee’s class = 18 x 24 = 432.
The number of cans collected by Mr. Galvez’s class = 25 x 21 = 525.
Use Bar Model
Grade 4 Chapter 3 Common Core 187
Subtract. 525 – 432 = 93 more cans.
So, Mr. Galvez’s class collected 93 more cans than Ms. Lee’s class.

Question 3.
At East School, each of the 45 classrooms has an average of 22 students. At West School, each of the 42 classrooms has an average of 23 students. How many more students are at East School than at West School?
______ more students

Answer:
Students in East school = 45 x 22 = 990.
Students in West School = 42 x 23 = 966.
Use Bar Model
Grade 4 Chapter 3 Common Core image 2 187
Subtract. 990 – 966 = 24.
So, East School has 24 students more than West School.

Question 4.
A zoo gift shop orders 18 boxes of 75 key rings each and 15 boxes of 80 refrigerator magnets each. How many more key rings than refrigerator magnets does the gift shop order?
______ more key rings

Answer:
Number of Key Rings = 75 x 18 = 1,350.
Number of Refrigerator Magnets= 80 x 15 = 1,200.
Use Bar Model
Grade 4 Chapter 3 Common Core image 3 187
Subtract. 1,350 – 1,200 = 150.
So, key rings are 150 more than refrigerator magnets.

Common Core – Page No. 188

Lesson Check

Question 1.
Ace Manufacturing ordered 17 boxes with 85 ball bearings each. They also ordered 15 boxes with 90 springs each. How many more ball bearings than springs did they order?
Options:
a. 5
b. 85
c. 90
d. 95

Answer:
d. 95

Explanation:
Number of ball bearings = 85 x 17 = 1,445.
Number of springs = 90 x 15 = 1,350.
Use Bar Model
Grade 4 Chapter 3 Common Core image 1 188
Subtract. 1,445 – 1,350 = 95.
So, ball bearings are 95 more than springs.

Question 2.
Elton hiked 16 miles each day on a 12-day hiking trip. Lola hiked 14 miles each day on her 16-day hiking trip. In all, how many more miles did Lola hike than Elton hiked?
Options:
a. 2 miles
b. 18 miles
c. 32 miles
d. 118 miles

Answer:
c. 32 miles

Explanation:
Hiking trip by Elton = 12 x 16 = 192.
Hiking trip by Lola = 16 x 14 = 224.
Use Bar Model
Grade 4 Chapter 3 Common Core image 2 188
Subtract. 224 – 192 = 32.
So, the Hiking trip by Lola is 32 times more than the Hiking trip by Elton.

Spiral Review

Question 3.
An orchard has 24 rows of apple trees. There are 35 apple trees in each row. How many apple trees are in the orchard?
Options:
a. 59
b. 192
c. 740
d. 840

Answer:
d. 840

Explanation:
An orchard has 24 rows of apple trees. There are 35 apple trees in each row.
24 x 35 = 840 apple trees are in the orchard.

Question 4.
An amusement park reported 354,605 visitors last summer. What is this number rounded to the nearest thousand?
Options:
a. 354,600
b. 355,000
c. 360,000
d. 400,000

Answer:
b. 355,000

Explanation:
An amusement park reported 354,605 visitors last summer. 4,605 is close to 5,000. So, the answer is 355,000.

Question 5.
Attendance at the football game was 102,653. What is the value of the digit 6?
Options:
a. 6
b. 60
c. 600
d. 6,000

Answer:
c. 600

Explanation:
Digit 6 is at hundreds of positions. So, the answer is 6 x 100 = 600.

Question 6.
Jill’s fish weighs 8 times as much as her parakeet. Together, the pets weigh 63 ounces. How much does the fish weigh?
Options:
a. 7 ounces
b. 49 ounces
c. 55 ounces
d. 56 ounces

Answer:
d. 56 ounces

Explanation:
Let Jill’s parakeet = X.
Jill’s fish weighs 8 times as much as her parakeet = 8X.
Together, the pets weigh 63 ounces.
X + 8X = 63.
9X = 63.
X = 63/9 = 7.
So, Jill’s parakeet =7.
Jill’s fish = 7 x 8 = 56 ounces.

Review/Test – Page No. 189

Question 1.
Explain how to find 40 × 50 using mental math
Type below:
_________

Answer:
200

Explanation:
40 x 50
By using mental math
4 x 5 = 20
40 x 50 = 200

Mrs. Traynor’s class is taking a field trip to the zoo. The trip will cost $26 for each student. There are 22 students in her class.

Question 2.
Part A
Round each factor to estimate the total cost of the students’ field trip.
$ ______

Answer:
$600

Explanation:
Total cost of the students’ field trip = 22 x $26.
22 x $26
20 x $30 = $600
The total cost would be about $600.

Question 2.
Part B
Use compatible numbers to estimate the total cost of the field trip.
$ ______

Answer:
$500

Explanation:
If we use compatible numbers to estimate the total cost of the field trip.
22 x $26
20 × 25 = 500
The total cost would be about $500.

Question 2.
Part C
Which do you think is the better estimate? Explain.
Better estimate: _________

Answer:
Using rounded numbers is a better estimate. When rounded numbers are used, one estimated factor was $4 more than the actual factor and the other estimated factor was $2 that is less than the actual factor. So, the estimate should be close to the actual one. When compatible numbers are used both estimated factors were less than the actual factors. So, the product will be an underestimate.

Review/Test – Page No. 190

For numbers 3a–3e, select Yes or No to show if the answer is correct.

Question 3.
3a. 35 × 10 = 350
i. yes
ii. no

Answer:
i. yes

Explanation:
35 x 10 = 350
30 x 10 = 300.
5 x 10 = 50.
300 + 50 = 350.

Question 3.
3b. 19 × 20 = 380
i. yes
ii. no

Answer:
i. yes

Explanation:
19 × 20 = 380
19 x 20 = 19 x 2 tens.
19 x 20 = 38 tens = 380.

Question 3.
3c. 12 × 100 = 120
i. yes
ii. no

Answer:
ii. no

Explanation:
12 x 100 = 120.
10 x 100 = 1000
2 x 100 = 200.
1000 + 200 = 1200.

Question 3.
3d. 70 × 100 = 7,000
i. yes
ii. no

Answer:
i. yes

Explanation:
70 x 100 = 7,000
100 x 7 tens = 700 tens = 7,000

Question 3.
3e. 28 × 30 = 2,100
i. yes
ii. no

Answer:
ii. no

Explanation:
28 × 30
20 x 30 = 600
8 x 30 = 240
600 + 240 = 840

Question 4.
There are 23 boxes of pencils in Mr. Shaw’s supply cabinet. Each box contains 100 pencils. How many pencils are in the supply cabinet?
_____ penciles

Answer:
2,300 pencils

Explanation:
23 x 100 = 2,300 pencils are in the supply cabinet.

Question 5.
Which would provide a reasonable estimate for each product? Write the estimate beside the product. An estimate may be used more than once
23 × 38 __________
31 × 32 __________
46 × 18 __________
39 × 21 __________

Answer:
23 × 38 –> 25 x 40
31 x 32 –> 30 × 30
46 × 18 –> 50 × 20
39 × 21 –> 25 × 40

Explanation:
23 × 38; 23 is close to 25; 38 is close to 40.
So, the estimated product is 25 x 40
31 x 32; 31 is close to 30; 32is close to 30.
So, the estimated product is 30 × 30
46 × 18; 46 is close to 50; 18 is close to 20.
So, the estimated product is 50 × 20
39 × 21; 39 is close to 40; 21 is close to 25.
So, the estimated product is 25 × 40

Question 6.
There are 26 baseball teams in the league. Each team has 18 players. Write a number sentence that will provide a reasonable estimate for the number of players in the league. Explain how you found your estimate.
Type below:
__________

Answer:
There are 26 baseball teams in the league. Each team has 18 players.
26 x 18
25 x 20
We Rounded each factor to its close factor, then simplified the multiplication.

Question 7.
The model shows 48 × 37. Write the partial products.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Review/Test img 31
Type below:
__________

Answer:
Grade 4 Chapter 3 Common Core image 1 190
Partial Products are 1200, 240, 280, 56

Review/Test – Page No. 191

Question 8.
Jess made this model to find the product 32 × 17. Her modelis incorrect.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Review/Test img 32
Part A
What did Jess do wrong?
Type below:
__________

Answer:
Jess added the numbers in the model instead of multiplying.

Question 8.
Part B
Redraw the model so that it is correct.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Review/Test img 33
Type below:
__________

Answer:
Grade 4 Chapter 3 Common Core image 2 190

Question 8.
Part C
What is the actual product 32 × 17?
______

Answer:
544

Explanation:
32 × 17
10 x 32 = 320
7 x 32 = 224
320 + 224 = 544.

Question 9.
Tatum wants to use partial products to find 15 × 32. Write the numbers in the boxes to show 15 × 32.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Review/Test img 34
Type below:
__________

Answer:
Grade 4 Chapter 3 Common Core image 4 190

Review/Test – Page No. 192

Question 10.
Which product is shown by the model? Write the letter of the product on the line below the model.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Review/Test img 35
Type below:
__________

Answer:
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Review/Test img 35
C                                              A                                                  B
10 + 3 = 13
10 + 3 = 13
13 x 13
2. 10 + 7 = 17
30 + 6 = 36
17 x 36
3. 20 + 4 = 24
10 + 4 = 14
24 x 14

Question 11.
Mrs. Jones places 3 orders for school T-shirts. Each order has 16 boxes of shirts and each box holds 17 shirts. How many T-shirts does Mrs. Jones order? Use partial products to help you.
Type below:
__________

Answer:
816 T-shirts

Explanation:
Mrs. Jones places 3 orders for school T-shirts. Each order has 16 boxes of shirts and each box holds 17 shirts.
Each box has 17 shirts.
16 boxes = 16 x 17 = 272.
Each order = 16 boxes = 272 shirts.
3 orders = 3 x 272 = 816 shirts.
Mrs. Jones order 816 T-shirts.

Question 12.
Write the unknown digits. Use each digit exactly once.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Review/Test img 36
Type below:
__________

Answer:
Grade 4 Chapter 3 Common Core image 1 192
90 x 40 = 3,600
90 x 6 = 540
3 x 40 = 120
3 x 6 = 18.
3,600 + 540 + 120 + 8 = 4,278.

Question 13.
Mike has 16 baseball cards. Niko has 17 times as many baseball cards as Mike does. How many baseball cards does Niko have?
________ baseball cards

Answer:
272 baseball cards

Explanation:
Mike has 16 baseball cards. Niko has 17 times as many baseball cards as Mike does.
Niko have 16 x 17 = 272 baseball cards.

Question 14.
Multiply.
36 × 28 = ________

Answer:
1,008

Explanation:
36 x 28
20 x 30 = 600
20 x 6 = 120
8 x 30 = 240
8 x 6 = 48
600 + 120 + 240 + 48 = 1,008

Review/Test – Page No. 193

Question 15.
A farmer planted 42 rows of tomatoes with 13 plants in each row. How many tomato plants did the farmer grow?
42 × 13 = ______ tomato plants

Answer:
420 + 126 = 546 tomato plants

Explanation:
42 × 13
10 x 42 = 420
3 x 42 = 126
420 + 126 = 546 tomato plants

Question 16.
Select another way to show 25 × 18. Mark all that apply.
Options:
a. (20 × 10) + (20 × 8) + (5 × 10) + (5 × 8)
b. (25 × 20) + (25 × 5) + (25 × 10) + (25 × 8)
c. (20 × 18) + (5 × 10) + (5 × 8)
d. (25 × 10) + (25 × 8)
e. (25 × 20) + (25 × 5)

Answer:
a. (20 × 10) + (20 × 8) + (5 × 10) + (5 × 8)
c. (20 × 18) + (5 × 10) + (5 × 8)
d. (25 × 10) + (25 × 8)

Explanation:
25 × 18
10 x 25 = 250
8 x 25 = 200
250 + 200 = 450.
a. (20 × 10) + (20 × 8) + (5 × 10) + (5 × 8) = 200 + 160 + 50 + 40 = 450
b. (25 × 20) + (25 × 5) + (25 × 10) + (25 × 8) = 500 + 125 + 250 + 200 = 1,075
c. (20 × 18) + (5 × 10) + (5 × 8) = 360 + 50 + 40 = 450
d. (25 × 10) + (25 × 8) = 250 + 200 = 450
e. (25 × 20) + (25 × 5) = 500 + 125 = 625

Question 17.
Terrell runs 15 sprints. Each sprint is 65 meters. How many meters does Terrell run? Show your work.
______ meters

Answer:
975 meters

Explanation:
Terrell run 15 x 65 = 975 meters.

Question 18.
There are 3 new seats in each row in a school auditorium. There are 15 rows in the auditorium. Each new seat cost $74. What is the cost for the new seats? Explain how you found your answer.
$ ______

Answer:
$3,330

Explanation:
Given that There are 3 new seats in each row in a school auditorium. There are 15 rows in the auditorium. Each new seat cost $74.
So, 3 x 15 = 45 seats are available in an auditorium.
Each new seat costs $74.
45 x $74 = $3,330 for total cost of the new seats.

Question 19.
Ray and Ella helped move their school library to a new building. Ray packed 27 boxes with 25 books in each box. Ella packed 23 boxes with 30 books in each box. How many more books did Ella pack? Show your work.
______ books

Answer:
15 books

Explanation:
Ray packed 27 x 25 = 675 books.
Ella packed 23 x 30 = 690 books
Ella packed 690 – 675 = 15 books more than Ray.

Review/Test – Page No. 194

Question 20.
Julius and Walt are finding the product of 25 and 16.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers Review/Test img 37
Part A
Julius’ answer is incorrect. What did Julius do wrong?
Type below:
__________

Answer:
Julius multiplied 25 by 10 and then multiplied 25 by 6 correctly. He added the two partial products incorrectly.

Question 20.
Part B
What did Walt do wrong?
Type below:
__________

Answer:
Walt multiplied 6 by 5 and got 300 instead of 30

Question 20.
Part C
What is the correct product?
Type below:
__________

Answer:
25 x 16 = 400

Question 21.
A clothing store sells 26 shirts and 22 pairs of jeans. Each item of clothing costs $32.
Part A
What is a reasonable estimate for the total cost of the clothing?
Show or explain how you found your answer.
$ ______

Answer:
$1500

Explanation:
A clothing store sells 26 shirts and 22 pairs of jeans. 26 + 22 = 48 clothes.
Each item of clothing costs $32.
48 x $32
50 x $30 = $1500

Question 21.
Part B
What is the exact answer for the total cost of the clothing? Show or explain how you found your answer.
$ ______

Answer:
$1,536

Explanation:
48 x $32
40 x $32 = $1,280
8 x $32 = $256
$1,280 + $256 = $1,536

Page No. 199

Question 1.
A restaurant has 68 chairs. There are six chairs at each table. About how many tables are in the restaurant?
Estimate. 68 ÷ 6
Think: What number times 6 is about 68?
10 × 6 = ___
11 × 6 = ___
12 × 6 = ___
68 is closest to ______, so the best estimate is about _______ tables are in the restaurant.
Type below:
__________

Answer:
68 is close to 70 and 6 is close to 5.
So, 70/5 = 12.
10 × 6 = __60_
11 × 6 = _66__
12 × 6 = _72__
68 is closest to ___66___, so the best estimate is about 11 x 6 = 66 tables are in the restaurant.

Find two numbers the quotient is between. Then estimate the quotient.

Question 2.
41 ÷ 3
between _______ and _______

Answer:
between 13 and 14
about 14

Explanation:
13 x 3 = 39; 14 x 3 = 42.
The quotient of 41 ÷ 3 is between 13 and 14.

Question 3.
192 ÷ 5
between _______ and _______

Answer:
between 30 and 40
about 40

Explanation:
30 x 5 = 150; 40 x 5 = 200.
The quotient of 192 ÷ 5 is between 30 and 40.

Find two numbers the quotient is between. Then estimate the quotient.

Question 4.
90 ÷ 7
between _______ and _______

Answer:
between 12 and 13
about 13

Explanation:
12 x 7 = 84; 13 x 7 = 91.
The quotient of 90 ÷ 7 is between 12 and 13.

Question 5.
67 ÷ 4
between _______ and _______

Answer:
between 16 and 17
about 17

Explanation:
16 x 4 = 64; 17 x 4 = 68.
The quotient of 67 ÷ 4 is between 16 and 17.

Question 6.
281 ÷ 9
between _______ and _______

Answer:
between 30 and 40
about 30

Explanation:
30 x 9 = 270; 40 x 9 = 360.
The quotient of 281 ÷ 9 is between 30 and 40.

Question 7.
102 ÷ 7
between _______ and _______

Answer:
between 14 and 15
about 15

Explanation:
14 x 7 = 98; 15 x 7 = 105.
The quotient of 102 ÷ 7 is between 14 and 15.

Question 8.
85 ÷ 6
between _______ and _______

Answer:
between 14 and 15
about 14

Explanation:
14 x 6 = 84; 15 x 6 = 90.
The quotient of 85 ÷ 6 is between 14 and 15.

Question 9.
220 ÷ 8
between _______ and _______

Answer:
between 20 and 30
about 30

Explanation:
20 x 8 = 160; 30 x 8 = 240.
The quotient of 220 ÷ 8 is between 20 and 30.

Decide whether the actual quotient is greater than or less than the estimate given. Write < or >.

Question 10.
83 ÷ 8 _______ 10

Answer:
>

Explanation:
83 ÷ 8 = 10.375 > 10

Question 11.
155 ÷ 4 _______ 40

Answer:
<

Explanation:
155 ÷ 4 = 38.75 < 40

Question 12.
70 ÷ 6 _______ 11

Answer:
>

Explanation:
70 ÷ 6 = 11.666 > 11

Question 13.
What’s the Question? A dolphin’s heart beats 688 times in 6 minutes. Answer: about 100 times.
Type below:
__________

Answer:
About how many times does a dolphin’s heart beats in 1 minute?

Question 14.
Analyze A mother bottlenose ate about 278 pounds of food in one week. About how much food did she eat in a day?
about _____ pounds

Answer:
about 40 pounds

Explanation:
278 ÷ 7
The quotient of 278 ÷ 7 is between 39 and 40.

Question 15.
Tanya has $42 to spend at the Dolphin Island store. T-shirts sell for $7 each and a pair of sunglasses sells for $6. Tanya buys 3 T-shirts. How many pairs of sunglasses can she buy with the amount of money she has left?
_____ pairs of sunglasses

Answer:
3 pairs of sunglasses

Explanation:
Given that Tanya has $42 to spend at the Dolphin Island store. T-shirts sell for $7 each and a pair of sunglasses sell for $6.
Tanya buys 3 T-shirts = 3 x $7 = $21.
pair of sunglasses = $42 – $21 = $21.
1 pair of sunglasses sells for $6.
So, $21 ÷ $7 = 3.
3 pairs of sunglasses can Tanya buy with the amount of money she has left.

Page No. 200

Question 16.
If a bottlenose dolphin can eat 175 pounds of fish, squid, and shrimp in a week, about how many pounds of food does it eat in a day? Milo says the answer is about 20 pounds. Leah says the answer is about 30 pounds. Who is correct? Explain.
Go Math Grade 4 Answer Key Chapter 3 Multiply 2-Digit Numbers img 38
________

Answer:
The bottlenose dolphin can eat 25 pounds for 1 day.
Both answers are correct. Because the 25 pounds is in between 20 and 30 pounds.

Explanation:
1 week = 7 days.
The bottlenose dolphin can eat 175 pounds for 7 days.
For 1 day = 175 ÷ 7 = 25 pounds.
The bottlenose dolphin can eat 25 pounds for 1 day.
Both answers are correct. Because the 25 pounds is in between 20 and 30 pounds.

Question 17.
Four families went out for lunch. The total food bill came to $167. The families also left a $30 tip for the waitress. If each family spent the same amount, about how much did each family spend on dinner? Explain how you found your answer.
$ ______

Answer:
$98.5

Explanation:
Four families went out for lunch. The total food bill came to $167. The families also left a $30 tip for the waitress.
So, total amount = $167 + $30 = $197.
If each family spent the same amount = $197 ÷ 2 = $98.5
Each family spent $98.5.

Question 18.
There are 6 showings of a film about Van Gogh at the Art Museum. A total of 459 people saw the film. The same number of people were at each showing. About how many people were at each showing? Circle the numbers the quotient is between. Then explain how you found your answer.
40 50 60 70 80
Type below:
_________

Answer:
40 50 60 70 80
I found multiples of 6 that 459 is between. 70 × 6 = 420 and 80 × 6 = 480. Since 459 is closer to 480, 459 ÷ 6 is about 80.

Conclusion

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Go Math Grade 5 Chapter 3 Answer Key Pdf Add and Subtract Decimals

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Add and Subtract Decimals Go Math Grade 5 Chapter 3 Answer Key Pdf

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Lesson 1: Investigate • Thousandths

Lesson 2: Place Value of Decimals

Lesson 3: Compare and Order Decimals

Lesson 4: Round Decimals

Lesson 5: Investigate • Decimal Addition

Lesson 6: Investigate • Decimal Subtraction

Mid-Chapter Checkpoint

Lesson 7: Estimate Decimal Sums and Differences

Lesson 8: Add Decimals

Lesson 9: Subtract Decimals

Lesson 10: Algebra • Patterns with Decimals

Lesson 11: Problem Solving • Add and Subtract Money

Lesson 12: Choose a Method

Review/Test

Share and Show – Page No. 111

Write the decimal shown by the shaded parts of each model.

Question 1.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 1
______

Answer:
0.665

Explanation:
The given picture shows
6 hundredths, 6 tenths, and 5 thousandths are shaded
665/1000 = 0.665

Question 2.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 2
______

Answer:
0.398

Explanation:
The given picture shows
3 hundredths, 9 tenths, and 8 thousandths are shaded
398/1000 = 0.398

Go Math Grade 5 Chapter 3 Answer Key Pdf Question 3.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 3
______

Answer:
0.181

Explanation:
The given picture shows
1 hundredth, 8 tenths, and 1 thousandth are shaded
181/1000 = 0.181

Question 4.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 4
______

Answer:
0.990

Explanation:
The given picture shows
9 hundredth, 9 tenths, and 0 thousandths are shaded
990/1000 = 0.990

Complete the sentence.

Question 5.
0.6 is 10 times as much as ______ .
______

Answer:
\(\frac{6}{100}\) = 0.06

Explanation:
Let the unknown number is S
0.6 = 10S
S = 0.6/10 = \(\frac{6}{10}\) x \(\frac{1}{10}\)
S = \(\frac{6}{100}\) = 0.06

Question 6.
0.007 is \(\frac{1}{10}\) of _______ .
______

Answer:
0.07

Explanation:
Let the unknown number is S
0.007 = \(\frac{1}{10}\)S
S = 0.007 x 10 = 0.07

Question 7.
0.008 is \(\frac{1}{10}\) of ________ .
______

Answer:
0.08

Explanation:
Let the unknown number is S
0.008 = \(\frac{1}{10}\)S
S = 0.008 x 10 = 0.08

Go Math Grade 5 Chapter 3 Pdf Question 8.
0.5 is 10 times as much as ______.
______

Answer:
0.05

Explanation:
Let the unknown number is S
0.5 = 10S
S = 0.5/10 = \(\frac{5}{10}\) x \(\frac{1}{10}\)
S = \(\frac{5}{100}\) = 0.05

Use place-value patterns to complete the table.

Question 9.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 5
Type below:
_________

Answer:
grade 5 chapter 3 Add and Subtract Decimals image 1

Explanation:
0.2 is 10 times as much as
Let the unknown number is S
0.2 = 10S
S = 0.2/10 = 0.02
0.2 is 1/10 of
0.2 = S/10
S = 0.2 x 10 = 2
0.07 is 10 times as much as
Let the unknown number be S
0.07 = 10S
S = 0.07/10 = 0.007
0.07 is 1/10 of
0.07 = S/10
S = 0.07 x 10 = 0.7
0.05 is 10 times as much as
Let the unknown number be S
0.05 = 10S
S = 0.05/10 = 0.005
0.05 is 1/10 of
0.05 = S/10
S = 0.05 x 10 = 0.5
0.4 is 10 times as much as
Let the unknown number be S
0.4 = 10S
S = 0.4/10 = 0.04
0.4 is 1/10 of
0.4 = S/10
S = 0.4 x 10 = 4

Question 10.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 6
Type below:
_________

Answer:
grade 5 chapter 3 Add and Subtract Decimals image 2

Explanation:
0.06 is 10 times as much as
Let the unknown number is S
0.06 = 10S
S = 0.06/10 = 0.006
0.06 is 1/10 of
0.06 = S/10
S = 0.06 x 10 = 0.6
0.9 is 10 times as much as
Let the unknown number is S
0.9 = 10S
S = 0.9/10 = 0.09
0.9 is 1/10 of
0.9 = S/10
S = 0.9 x 10 = 9
0.3 is 10 times as much as
Let the unknown number is S
0.3 = 10S
S = 0.3/10 = 0.03
0.3 is 1/10 of
0.3 = S/10
S = 0.3 x 10 = 3
0.08 is 10 times as much as
Let the unknown number is S
0.08 = 10S
S = 0.08/10 = 0.006
0.08 is 1/10 of
0.08 = S/10
S = 0.08 x 10 = 0.8

Problem Solving Applications – Page No. 112

Use the table for 17 and 20.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 7

Question 17.
A science teacher showed an image of a carpenter bee on a wall. The image is 10 times as large as the actual bee. Then he showed another image of the bee that is 10 times as large as the first image. What is the length of the bee in the second image?
______ meters

Answer:
2.5 meters

Explanation:
A science teacher showed an image of a carpenter bee on a wall. The image is 10 times as large as the actual bee.
carpenter bee = 0.025
The first image = 0.025 x 10 = 0.25
The second image = 10 times as large as the first image = 0.25 x 10 = 2.5

Go Math Grade 5 Chapter 3 Answer Key Question 18.
Math Explain how you can use place value to describe how 0.05 and 0.005 compare.
Type below:
_________

Answer:
Both numbers have 0 ones. So, we cannot compare these two numbers.
Look at the tenths. Both numbers have 0 tenths. So, we cannot compare these numbers.
Look at the hundredths.
The first number has 5 hundredths. The second number has 0 hundredths.
So, 0.05 > 0.005

Question 19.
Use Repeated Reasoning Terry, Sasha, and Harry each chose a number. Terry’s number is ten times as much as Sasha’s. Harry’s number is \(\frac{1}{10}\) of Sasha’s. Sasha’s number is 0.4. What number did each person choose?
Terry’s number: ______
Harry’s number: ______

Answer:
Terry’s number: 4
Harry’s number: 0.04

Explanation:
Sasha’s number is 0.4
Terry’s number is ten times as much as Sasha’s.
Terry’s number = 10 x 0.4 = 10 x \(\frac{4}{10}\) = 4
Harry’s number is \(\frac{1}{10}\) of Sasha’s.
Harry’s number = \(\frac{1}{10}\) x 0.4 = \(\frac{1}{10}\) x \(\frac{4}{10}\) = \(\frac{4}{100}\) = 0.04
Sasha’s number is 0.4
Terry’s number is 4
Harry’s number is 0.04

Question 20.
An atlas beetle is about 0.14 of a meter long. How does the length of the atlas beetle compare to the length of a leafcutting bee?
Type below:
_________

Answer:
An atlas beetle is about 0.14 of a meter long.
length of a leafcutting bee = 0.014
1 tenth is greater than 0 tenths.
So, 0.14 > 0.014
So, atlas beetle length is greater than the length of a leafcutting bee

Question 21.
Choose the numbers that make the statement true.
0.65 is 10 times as much as Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 8 and \(\frac{1}{10}\) of Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 9
Type below:
_________

Answer:
0.65 is 10 times as much as 0.065
0.65 is \(\frac{1}{10}\) of 6.5

Explanation:
0.65 is 10 times as much as
0.65 = 10S
S = 0.65/10 = 0.065
0.65 is \(\frac{1}{10}\) of
0.65 x 10 = 6.5
So, 0.65 is 10 times as much as 0.065
0.65 is \(\frac{1}{10}\) of 6.5

Share and Show – Page No. 115

Question 1.
Complete the place-value chart to find the value of each digit.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 10
Type below:
_________

Answer:
grade 5 chapter 3 Add and Subtract Decimals 115image 1

Explanation:
3 x 1 = 3
5 Tenths = 5 x 1/10 = 0.5
2 hundredths = 2 x 1/100 = 0.02
3 thousandths = 3 x 1/1000 = 0.003

Write the value of the underlined digit.

Question 2.
0.543
Type below:
_________

Answer:
0.04

Explanation:
(0 x 1) + (5 x \(\frac{1}{10}\)) + (4 x \(\frac{1}{100}\)) + (3 x \(\frac{1}{1000}\))
4 x \(\frac{1}{100}\) = 4 hundredths = 0.04

Question 3.
6.234
Type below:
_________

Answer:
0.2

Explanation:
(6 x 1) + (2 x \(\frac{1}{10}\)) + (3 x \(\frac{1}{100}\)) + (4 x \(\frac{1}{1000}\))
2 x \(\frac{1}{10}\) = 2 tenths = 0.2

Go Math Grade 5 Chapter 3 Review Test Question 4.
3.954
Type below:
_________

Answer:
0.004

Explanation:
(3 x 1) + (9 x \(\frac{1}{10}\)) + (5 x \(\frac{1}{100}\)) + (4 x \(\frac{1}{1000}\))
4 x \(\frac{1}{1000}\) = 4 thousandths = 0.004

Write the number in two other forms.

Question 5.
0.253
Type below:
_________

Answer:
Word Form: two hundred fifty-three thousandths
Expanded Form: (0 x 1) + (2 x \(\frac{1}{10}\)) + (5 x \(\frac{1}{100}\)) + (3 x \(\frac{1}{1000}\))

Question 6.
7.632
Type below:
_________

Answer:
Word Form: seven and six hundred thirty-two thousandths
Expanded Form: (7 x 1) + (6 x \(\frac{1}{10}\)) + (3 x \(\frac{1}{100}\)) + (2 x \(\frac{1}{1000}\))

On Your Own

Write the value of the underlined digit.

Question 7.
0.496
Type below:
_________

Answer:
0.09

Explanation:
(0 x 1) + (4 x \(\frac{1}{10}\)) + (9 x \(\frac{1}{100}\)) + (6 x \(\frac{1}{1000}\))
9 x \(\frac{1}{100}\) = 9 hundredths = 0.09

Question 8.
2.726
Type below:
_________

Answer:
0.7

Explanation:
(2 x 1) + (7 x \(\frac{1}{10}\)) + (2 x \(\frac{1}{100}\)) + (6 x \(\frac{1}{1000}\))
7 x \(\frac{1}{10}\) = 0.7

Question 9.
1.066
Type below:
_________

Answer:
0.006

Explanation:
(1 x 1) + (0 x \(\frac{1}{10}\)) + (6 x \(\frac{1}{100}\)) + (6 x \(\frac{1}{1000}\))
6 x \(\frac{1}{1000}\) = 0.006

Go Math Grade 5 Chapter 3 Mid Chapter Checkpoint Answer Key Question 10.
6.399
Type below:
_________

Answer:
0.3

Explanation:
(6 x 1) + (3 x \(\frac{1}{10}\)) + (9 x \(\frac{1}{100}\)) + (9 x \(\frac{1}{1000}\))
3 x \(\frac{1}{10}\) = 0.3

Question 11.
0.002
Type below:
_________

Answer:
0.002

Explanation:
(0 x 1) + (0 x \(\frac{1}{10}\)) + (0 x \(\frac{1}{100}\)) + (2 x \(\frac{1}{1000}\))
2 x \(\frac{1}{1000}\) = 0.002

Question 12.
4.371
Type below:
_________

Answer:
0.001

Explanation:
(4 x 1) + (3 x \(\frac{1}{10}\)) + (7 x \(\frac{1}{100}\)) + (1 x \(\frac{1}{1000}\))
1 x \(\frac{1}{1000}\) = 0.001

Write the number in two other forms.

Question 13.
0.489
Type below:
_________

Answer:
Word Form: four hundred eighty-nine thousandths
Expanded Form: (0 x 1) + (4 x \(\frac{1}{10}\)) + (8 x \(\frac{1}{100}\)) + (9 x \(\frac{1}{1000}\))

5th Grade Go Math Chapter 3 Review Test Question 14.
5.916
Type below:
_________

Answer:
Word Form: five and nine hundred sixteen thousandths
Expanded Form: (5 x 1) + (9 x \(\frac{1}{10}\)) + (1 x \(\frac{1}{100}\)) + (6 x \(\frac{1}{1000}\))

Problem Solving Applications – Page No. 116

Use the table for 15–16.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 11

Question 15.
What is the value of the digit 7 in New Mexico’s average annual rainfall?
Type below:
_________

Answer:
0.07

Explanation:
New Mexico’s average annual rainfall = 0.372
(0 x 1) + (3 x \(\frac{1}{10}\)) + (7 x \(\frac{1}{100}\)) + (2 x \(\frac{1}{1000}\))
7 x \(\frac{1}{100}\) = 0.07

Question 16.
Which of the states has an average annual rainfall with the least number in the thousandths place? What is another way to write the total annual rainfall in this state?
_________

Answer:
Wisconsin
(0 x 1) + (8 x \(\frac{1}{10}\)) + (2 x \(\frac{1}{100}\)) + (0 x \(\frac{1}{1000}\))

Explanation:
California = 0.564
New Mexico = 0.372
New York = 1.041
Wisconsin = 0.820
Maine = 1.074
The state that has an average annual rainfall with the least number in the thousandths place
0 < 1 < 2 < 4. So, the state is Wisconsin.
Another way to write the total annual rainfall in Wisconsin state is (0 x 1) + (8 x \(\frac{1}{10}\)) + (2 x \(\frac{1}{100}\)) + (0 x \(\frac{1}{1000}\))

Question 17.
Verify the Reasoning of Others Damian wrote the number four and twenty-three thousandths as 4.23. Describe and correct his error.
Type below:
_________

Answer:
four and twenty-three thousandths = 4 ones and 0 tenths, 2 hundredths, three thousandths = 4.023.
He has written 4.23 which is wrong.

Go Math 5th Grade Chapter 3 Add and Subtract Decimals Question 18.
Dan used a meter stick to measure some seedlings in his garden. One day, a corn stalk was 0.85 m tall. A tomato plant was 0.850 m. A carrot top was 0.085 m. Which plant was the shortest?
_________

Answer:
the carrot top is the shortest plant

Explanation:
Dan used a meter stick to measure some seedlings in his garden. One day, a corn stalk was 0.85 m tall. A tomato plant was 0.850 m. A carrot top was 0.085 m. 0 tenths are less than the 8 tenths. So, 0.085 is less than 0.85 or 0.850. So, the carrot top is the shortest plant.

Question 19.
Math Explain how you know that the digit 6 does not have the same value in the numbers 3.675 and 3.756.
Type below:
_________

Answer:
In 3.675, the digit of 6 is in the tenths place. So, its value is 6 x 1/10 or 0.6.
In 3.756, the digit of 6 is in the thousandths place, so its value is 6 x 1/1000 or 0.006.

Question 20.
What is the value of the underlined digit? Mark all that apply.
0.589
Options:
a. 0.8
b. 0.08
c. eight tenths
d. eight hundredths
e. 8 × (\(\frac{1}{10}\))

Answer:
b. 0.08
d. eight hundredths

Explanation:
(0 x 1) + (5 x \(\frac{1}{10}\)) + (8 x \(\frac{1}{100}\)) + (9 x \(\frac{1}{1000}\))
8 x \(\frac{1}{100}\) = 8 hundredths = 0.08

Share and Show – Page No. 119

Question 1.
Use the place-value chart to compare the two numbers. What is the greatest place-value position where the digits differ?
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 12
Type below:
_________

Answer:
3.472 > 3.445
They differ in hundredths position

Explanation:
Compare the ones; 3 = 3
Compare the tenths; 4 = 4
Compare the hundredths; 7 > 4
So, 3.472 > 3.445

Compare. Write <, >, or =.

Question 2.
4.563 ______ 4.536

Answer:
4.563 > 4.536

Explanation:
Compare the ones; 4 = 4
Compare the tenths; 5 = 5
Compare the hundredths; 6 > 3
So, 4.563 > 4.536

Go Math Grade 5 Chapter 3 Review/Test Answer Key Pdf Question 3.
5.640 ______ 5.64

Answer:
5.640 = 5.64

Explanation:
Compare the ones; 5 = 5
Compare the tenths; 6 = 6
Compare the hundredths; 4 = 4
Compare the thousandths; 0 = 0
So, 5.640 = 5.64

Question 4.
8.673 ______ 8.637

Answer:
8.673 > 8.637

Explanation:
Compare the ones; 8 = 8
Compare the tenths; 6 = 6
Compare the hundredths; 7 > 3
So, 8.673 > 8.637

Name the greatest place-value position where the digits differ.

Name the greater number.

Question 5.
3.579; 3.564
______

Answer:
3.579 > 3.564
The greatest place-value position where the digits differ are hundredths

Explanation:
Compare the ones; 3 = 3
Compare the tenths; 5 = 5
Compare the hundredths; 7 > 6
So, 3.579 > 3.564
The greatest place-value position where the digits differ are hundredths

Question 6.
9.572; 9.637
______

Answer:
9.572 < 9.637
The greatest place-value position where the digits differ are tenths

Explanation:
Compare the ones; 9 = 9
Compare the tenths; 5 < 6
So, 9.572 < 9.637
The greatest place-value position where the digits differ are tenths

Question 7.
4.159; 4.152
______

Answer:
4.159 > 4.152
The greatest place-value position where the digits differ are thousandths

Explanation:
Compare the ones; 4 = 4
Compare the tenths; 1 = 1
Compare the hundredths; 5 = 5
Compare the thousandths; 9 > 2
So, 4.159 > 4.152
The greatest place-value position where the digits differ are thousandths

Order from least to greatest.

Question 8.
4.08; 4.3; 4.803; 4.038

Answer:
4.038, 4.08, 4.3, 4.803

Explanation:
Compare the ones; All are equal
Compare the tenths; 0 < 3 < 8.
So, 4.08, 4.038, 4.3, 4.803
Compare the hundredths of 4.08 and 4.038; 8 > 3
So, 4.038, 4.08, 4.3, 4.803

Go Math Grade 5 Chapter 3 Test Question 9.
1.703; 1.037; 1.37; 1.073

Answer:
1.037, 1.073, 1.37, 1.703

Explanation:
Compare the ones; All are equal
Compare the tenths; 0 < 3 < 7.
So, 1.037; 1.073; 1.37; 1.703
Compare the hundredths of 1.037 and 1.073; 3 < 7
So, 1.037, 1.073, 1.37, 1.703

On Your Own

Compare. Write <, >, or =.

Question 10.
8.72 ______ 8.720

Answer:
8.72 = 8.720

Explanation:
Compare the ones; 8 = 8
Compare the tenths; 7 = 7
Compare the hundredths; 2 = 2
Compare the thousands; 0 = 0
So, 8.72 = 8.720

Question 11.
5.4 ______ 5.243

Answer:
5.4 > 5.243

Explanation:
Compare the ones; 5 = 5
Compare the tenths; 4 > 2
So, 5.4 > 5.243

Question 12.
1.036 ______ 1.306

Answer:
1.036 < 1.306

Explanation:
Compare the ones; 1 = 1
Compare the tenths; 0 < 3
So, 1.036 < 1.306

Question 13.
2.573 ______ 2.753

Answer:
2.573 < 2.753

Explanation:
Compare the ones; 2 = 2
Compare the tenths; 5 < 7
So, 2.573 < 2.753

Question 14.
9.300 ______ 9.3

Answer:
9.300 = 9.3

Explanation:
Compare the ones; 9 = 9
Compare the tenths; 3 = 3
Compare the hundredths; 0 = 0
Compare the thousands; 0 = 0
So, 9.300 = 9.3

Go Math Pdf Grade 5 Chapter 3 Lesson 3.3 Answer Key Question 15.
6.76 ______ 6.759

Answer:
6.76 > 6.759

Explanation:
Compare the ones; 6 = 6
Compare the tenths; 7 = 7
Compare the hundredths; 6 > 5
So, 6.76 > 6.759

Order from greatest to least.

Question 16.
2.007; 2.714; 2.09; 2.97
______ ; ______ ; ______ ; ______

Answer:
2.97; 2.714; 2.09; 2.007

Explanation:
Compare the ones; All are equal
Compare the tenths; 0 < 7 < 9.
So, 2.007; 2.09; 2.714; 2.97
Compare the hundredths of 2.007 and 2.09; 0 < 9
So, 2.007; 2.09; 2.714; 2.97
Order from greatest to least = 2.97; 2.714; 2.09; 2.007

Question 17.
0.386; 0.3; 0.683; 0.836
______ ; ______ ; ______ ; ______

Answer:
0.836; 0.683; 0.386; 0.3

Explanation:
Compare the ones; All are equal
Compare the tenths; 0 < 3 < 6 < 8.
So, 0.386; 0.3; 0.683; 0.836
Compare the hundredths of 0.386 and 0.3; 8 > 0
So, 0.3; 0.386; 0.683; 0.836
Order from greatest to least = 0.836; 0.683; 0.386; 0.3

Question 18.
5.249; 5.43; 5.340; 5.209
______ ; ______ ; ______ ; ______

Answer:
5.43; 5.340; 5.249; 5.209

Explanation:
Compare the ones; All are equal
Compare the tenths; 2 < 3 < 4.
So, 5.249; 5.209; 5.340; 5.43
Compare the hundredths of 5.249 and 5.209; 4 > 0
So, 5.209; 5.249; 5.340; 5.43
Order from greatest to least = 5.43; 5.340; 5.249; 5.209

Question 19.
0.678; 1.678; 0.587; 0.687
______ ; ______ ; ______ ; ______

Answer:
1.678; 0.687; 0.678; 0.587

Explanation:
Compare the ones; 0 < 1
So, 0.678; 0.587; 0.687; 1.678
Compare the tenths of 0.678; 0.587; 0.687; 5 < 6.
So, 0.587; 0.678; 0.687; 1.678
Compare the hundredths of 0.678 and 0.687; 7 < 8
So, 0.587; 0.678; 0.687; 1.678
Order from greatest to least = 1.678; 0.687; 0.678; 0.587

Use Reasoning Algebra Find the unknown digit to make each statement true.

Question 20.
3.59 > 3.5 ______ 1 > 3.572

Answer:
3.59 > 3.581 > 3.572

Explanation:
The possible values are
3.573; 3.574; 3.575; 3.578; 3.579; 3.580; 3.581; 3.582; 3.583; 3.584; 3.585; 3.586; 3.587; 3.588; 3.589;
The digit that ends with 1 is 3.581.
So, the unknown digit is 3.581

Go Math Grade 5 Answer Key Chapter 3 Compare and Order Decimals Lesson 3.3 Question 21.
6.837 > 6.83 ______ > 6.835

Answer:
6.837 > 6.836 > 6.835

Explanation:
The value must be 6.836. Because 6 is the only digit between 5 and 7.
So, the unknown digit is 6.836

Question 22.
2.45 < 2 ______ 6 < 2.461

Answer:
2.45 < 2.456 < 2.461

Explanation:
2.451; 2.452; 2.453; 2.454; 2.455; 2.456; 2.457; 2.458; 2.459; 2.460; 2.461
The digit that ends with 6 is 2.456.
So, the unknown digit is 2.456

Problem Solving Applications – Page No. 120

Use the table for 23–26.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 13

Question 23.
In comparing the height of the mountains, which is the greatest place value where the digits differ?
_________

Answer:
The greatest place value where the digits differ is hundredths

Explanation:
3.104; 3.134; 3.152
0 hundredths < 3 hundredths < 5 hundredths
3.152; Mount Steele, Yukon is the greatest mountain.
The greatest place value where the digits differ is hundredths.

Question 24.
Use Math Vocabulary How does the height of Mount Steele compare to the height of Mount Blackburn? Compare the heights using words.
Type below:
_________

Answer:
The Height of Mount Steele is greater than Height of Mount Blackburn.

Explanation:
Height of Mount Steele = 3.152
Height of Mount Blackburn = 3.104
3.152 > 3.104
The Height of Mount Steele is greater than the Height of Mount Blackburn.

Lesson 3 Add and Subtract Whole Numbers Answer Key Question 25.
Explain how to order the heights of the mountains from greatest to least.
Type below:
_________

Answer:
3.152 > 3.134 > 3.104

Explanation:
3.104; 3.134; 3.152
0 hundredths < 3 hundredths < 5 hundredths
3.152 > 3.134 > 3.104

Question 26.
What if the height of Mount Blackburn were 0.05 miles greater? Would it then be the mountain with the greatest height? Explain.
______

Answer:
Height of Mount Blackburn = 3.104 + 0.05 = 3.154
3.154 > 3.152 > 3.134.
Yes, Mount Blackburn would have the greatest height if it had been 0.05 miles greater.

Question 27.
Orlando kept a record of the total rainfall each month for 5 months.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 14
Order the months from the least amount of rainfall to the greatest amount of rainfall.
Least ______ ______ ______ ______ ______ Greatest

Answer:
Least: 3.09; 3.75; 4.04; 4.09; 4.42 Greatest

Explanation:
3.75; 4.42; 4.09; 3.09; 4.04
3 < 4
3.75; 3.09; 4.42; 4.09; 4.04
Compare tenths of 3.75 and 3.09; 0 < 7
3.09; 3.75; 4.42; 4.09; 4.04
Compare tenths of 4.42; 4.09; 4.04; 0 <4
3.09; 3.75; 4.09; 4.04; 4.42
Compare hundredths of 4.09 and 4.04; 4 < 9
So, 3.09; 3.75; 4.04; 4.09; 4.42

Share and Show – Page No. 123

Write the place value of the underlined digit. Round each number to the place of the underlined digit.

Question 1.
0.673
Place value: ________
Round: ________

Answer:
Place value: 7 hundredths = 0.07
Round: 0.670

Explanation:
0.673
(0 x 1) + (6 x \(\frac{1}{10}\)) + (7 x \(\frac{1}{100}\)) + (3 x \(\frac{1}{1000}\))
Place Value: 7 x \(\frac{1}{100}\) = 7 hundredths = 0.07
0.673
3 < 5
0.670

Question 2.
4.282
Place value: ________
Round: ________

Answer:
Place value: 2 tenths = 0.2
Round: 4.300

Explanation:
4.282
(4 x 1) + (2 x \(\frac{1}{10}\)) + (8 x \(\frac{1}{100}\)) + (2 x \(\frac{1}{1000}\))
Place Value: 2 x \(\frac{1}{10}\) = 2 tenths = 0.2
4.282
8 > 5
4.300

Go Math Grade 5 Chapter 3 Lesson 3.4 Answer Key Question 3.
12.917
Place value: ________
Round: ________

Answer:
Place value: 2 ones = 2
Round: 13

Explanation:
12.917
(1 x 10) + (2 x 1) + (9 x \(\frac{1}{10}\)) + (1 x \(\frac{1}{100}\)) + (7 x \(\frac{1}{1000}\))
Place Value: 2 x 1 = 2 ones = 2
12.917
9 > 5
13

Name the place value to which each number was rounded.

Question 4.
0.982 to 0.98
________

Answer:
The hundredths

Explanation:
As 2 < 5, We round 0.982 to 0.98.
The place value of the digit 8 is hundredths.
The hundredths

Question 5.
3.695 to 4
________

Answer:
The ones

Explanation:
As 6 > 5, We round 3.695 to 4.
The place value of the digit 3 is ones.
The ones

Question 6.
7.486 to 7.5
________

Answer:
The tenths

Explanation:
As 8 > 5, We round 7.486 to 7.5.
The place value of the digit 4 is tenths.
The tenths

On Your Own

Write the place value of the underlined digit. Round each number to the place of the underlined digit.

Question 7.
0.592
Place value: ________
Round: ________

Answer:
Place value: 5 tenths = 0.5
Round: 0.6

Explanation:
0.592
(0 x 1) + (5 x \(\frac{1}{10}\)) + (9 x \(\frac{1}{100}\)) + (2 x \(\frac{1}{1000}\))
Place Value: 5 x \(\frac{1}{10}\) = 5 tenths = 0.5
0.592
9 > 5
0.6

Go Math Grade 5 Lesson 3.4 Answer Key Question 8.
6.518
Place value: ________
Round: ________

Answer:
Place value: 6 ones = 6
Round: 7

Explanation:
6.518
(6 x 1) + (5 x \(\frac{1}{10}\)) + (1 x \(\frac{1}{100}\)) + (8 x \(\frac{1}{1000}\))
Place Value: 6 x 1 = 6 ones = 6
6.518
5 = 5
7

Question 9.
0.809
Place value: ________
Round: ________

Answer:
Place value: 0 hundredths = 0
Round: 0.8

Explanation:
0.809
(0 x 1) + (8 x \(\frac{1}{10}\)) + (0 x \(\frac{1}{100}\)) + (9 x \(\frac{1}{1000}\))
Place Value: 0 x \(\frac{1}{100}\) = 0 hundredths = 0
0.809
0 < 5
0.800

Question 10.
3.334
Place value: ________
Round: ________

Answer:
Place value: 7 tenths = 0.7
Round: 3

Explanation:
3.334
(3 x 1) + (3 x \(\frac{1}{10}\)) + (3 x \(\frac{1}{100}\)) + (4 x \(\frac{1}{1000}\))
Place Value: 3 x \(\frac{1}{10}\) = 7 tenths = 0.7
3.334
3 < 5
3.000

Question 11.
12.074
Place value: ________
Round: ________

Answer:
Place value: 0 tenths = 0
Round: 12.1

Explanation:
12.074
(1 x 10) + (2 x 1) + (0 x \(\frac{1}{10}\)) + (7 x \(\frac{1}{100}\)) + (4 x \(\frac{1}{1000}\))
Place Value: 0 x \(\frac{1}{10}\) = 0 tenths = 0
12.074
7 > 5
12.1

Question 12.
4.494
Place value: ________
Round: ________

Answer:
Place value: 9 hundredths = 0.09
Round: 4.49

Explanation:
4.494
(4 x 1) + (4 x \(\frac{1}{10}\)) + (9 x \(\frac{1}{100}\)) + (4 x \(\frac{1}{1000}\))
Place Value: 9 x \(\frac{1}{100}\) = 9 hundredths = 0.09
4.494
4 < 5
4.49

Name the place value to which each number was rounded.

Question 13.
0.328 to 0.33
________

Answer:
The hundredths

Explanation:
As 8 > 5, We round 0.328 to 0.33.
The place value of the digit 2 is hundredths.
The hundredths

Question 14.
2.607 to 2.61
________

Answer:
The hundredths

Explanation:
As 7 > 5, We round 2.607 to 2.61.
The place value of the digit 0 is hundredths.
The hundredths

Question 15.
12.583 to 13
________

Answer:
The ones

Explanation:
As 5 = 5, We round 12.583 to 13.
The place value of the digit 2 is one.
The ones

Round 16.748 to the place named.

Question 16.
tenths: ______

Answer:
16.7

Explanation:
Round 16.748 to the nearest tenths
The tenth digit is 7. So, 4 < 5
16.7

Question 17.
hundredths: ______

Answer:
16.75

Explanation:
Round 16.748 to the nearest hundredths
The hundredth digit is 4. So, 8 > 5
16.75

Question 18.
ones: ______

Answer:
17

Explanation:
Round 16.748 to the nearest ones
The ones digit is 6. So, 7 > 5
17

Question 19.
Explain what happens when you round 4.999 to the nearest tenth.
Type below:
_________

Answer:
5

Explanation:
round 4.999 to the nearest tenth
The tenth digit is 9. So, 9 > 5
5

Problem Solving Applications – Page No. 124

Use the table for 20–22.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 15

Question 20.
The speeds of two insects when rounded to the nearest whole number are the same. Which two insects are they?
_________
_________

Answer:
Bumblebee
Honeybee

Explanation:
Dragonfly = 6.974 meters; nearest whole number = 7
Horsefly = 3.934 meters; nearest whole number = 4
Bumblebee = 2.861 meters; nearest whole number = 3
Honeybee = 2.548 meters; nearest whole number = 3
Housefly = 1.967 meters; nearest whole number = 2
Bumblebee and Honeybee speeds are the same if their rounded to the nearest whole number.

Question 21.
What is the speed of the housefly rounded to the nearest hundredth?
______ meters per second

Answer:
3.93 meters per second

Explanation:
Horsefly = 3.934 meters rounded to the nearest hundredth
The hundredth digit is 3. So, 4 < 5
3.93

Question 22.
What’s the Error? Mark said that the speed of a dragonfly rounded to the nearest tenth was 6.9 meters per second. Is he correct? If not, what is his error?
Type below:
_________

Answer:
Dragonfly = 6.974 meters rounded to the nearest tenth.
The tenth digit is 9. So, 7 > 5
7.
So, Mark said is wrong.

Question 23.
A rounded number for the speed of an insect is 5.67 meters per second. What are the fastest and slowest speeds to the thousandths that could round to 5.67 meters per second? Explain.
Type below:
_________

Answer:
The slowest speed to the thousandths that could round to 5.67 meters per second is 5.671
The fastest speed to the thousandths that could round to 5.67 meters per second is 5.674

Explanation:
To find the slowest speed to the thousandths that could round to 5.67 meters per second we need to find the lowest digit which will not affect the digit in the hundredths place, and that is 1. So, the slowest speed to the thousandths that could round to 5.67 meters per second is 5.671.
To find the fastest speed to the thousandths that could round to 5.67 meters per second we need to find the greatest digit which will not affect the digit in the hundredths place, and that is 4. So, the fastest speed to the thousandths that could round to 5.67 meters per second is 5.674.

Question 24.
The price of a certain box of cereal at the grocery store is $0.258 per ounce. For numbers 24a–24c, select True or False for each statement.
a. Rounded to the nearest whole number, the price is $1 per ounce.
i. yes
ii. no

Answer:
ii. no

Explanation:
$0.258
2 < 5.
So, if we rounded to the nearest whole number, the value becomes 0.

Question 24.
b. Rounded to the nearest tenth, the price is $0.3 per ounce.
i. yes
ii. no

Answer:
i. yes

Explanation:
$0.258
5 = 5
So, $3 is the answer.

Question 24.
c. Rounded to the nearest hundredth, the price is $0.26 per ounce.
i. yes
ii. no

Answer:
i. yes

Explanation:
$0.258
8 > 5
$0.26

Share and Show – Page No. 127

Complete the quick picture

Question 1.
1.37 + 1.85 =
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 16
______

Answer:
grade 5 chapter 3 Add and Subtract Decimals 127 image 1

Explanation:
1.37 + 1.85 = 3. 22
Add hundredths; 7 + 5 = 12; Regroup
Add tenths; 3 + 8 + 1 = 12; Regroup
Add tens; 1 + 1 + 1 = 3

Add. Draw a quick picture.

Question 2.
0.9 + 0.7 =
______

Answer:
0.9 + 0.7 = 1.6
grade 5 chapter 3 Add and Subtract Decimals 127 image 2

Explanation:
0.9 + 0.7 =
Add tenths 9 + 7 = 16; Regroup
Add ones 0 + 0 + 1 = 1
0.9 + 0.7 = 1.6

Go Math Chapter 3 Test Grade 5 Lesson 3.5 Thousandths Question 3.
0.65 + 0.73 =
______

Answer:
0.65 + 0.73 = 1.38
grade 5 chapter 3 Add and Subtract Decimals 127 image 3

Explanation:
0.65 + 0.73 = 1.38
Add hundredths 5 + 3 = 8;
Add tenths 6 + 7 = 13; Regroup
Add ones 0 + 0 + 1 = 1
0.65 + 0.73 = 1.38

Question 4.
1.3 + 0.7 =
______

Answer:
1.3 + 0.7 = = 2
grade 5 chapter 3 Add and Subtract Decimals 127 image 4

Explanation:
Add tenths 3 + 7 = 10; Regroup
Add ones 1 + 1 = 2
1.3 + 0.7 = = 2

Question 5.
2.72 + 0.51 =
______

Answer:
2.72 + 0.51 = 3.23
grade 5 chapter 3 Add and Subtract Decimals 127 image 5

Explanation:
Add hundredths 2 + 1 = 3
Add tenths 5 + 7 = 12; Regroup
Add ones 2 + 0 + 1 = 3
2.72 + 0.51 = 3.23

Problem Solving Applications

Question 6.
Carissa bought 2.35 pounds of chicken and 2.7 pounds of turkey for lunch this week. She used a quick picture to and the amount of lunch meat. Does Carissa’s work make sense? Explain.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 17
______

Answer:
Yes; Because she bought 2.35 pounds of chicken and 2.7 pounds
2.35 + 2.7 = 5.05 pounds.
there is 5 ones and 5 hundredths.

Sense or Nonsense? – Page No. 128

Question 7.
Robyn and Jim used quick pictures to model 1.85 + 2.73.
Robyn’s Work
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 18
1.85 + 2.73 = 3.158
Does Robyn’s work make sense?
Explain your reasoning.
Type below:
_________

Answer:
Robyn’s work doesn’t make sense. Because 7 + 8 = 15. So, he needs to regroup and then add 1 to the one’s digits.
1 + 2 + 1 = 4
1.85 + 2.73 = 4.58 is the correct answer.

Jim’s Work
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 19
1.85 + 2.73 = 4.58
Does Jim’s work make sense?
Explain your reasoning.

Answer:
Jim’s work makes sense.
Add: 1.85 + 2.73 = 4.58.
4 ones, 5 tenths, and 8 hundredths.

Go Math Book 5th Grade Lesson 3.5 Answer Key Question 8.
Make Arguments Explain how you would help Robyn understand that regrouping is important when adding decimals.
Type below:
_________

Answer:
Regrouping is important when adding decimals. When you add two digits, if their addition is more than 10 then we need to regroup the values to find the correct answer.

Question 9.
Write a decimal addition problem that requires regrouping the hundredths. Explain how you know you will need to regroup.
Type below:
_________

Answer:
Let’s add 1.47 and 1.35 As we have more than 9 hundredths we have to regroup and mid the tenths.
So, now we have 8 tenths and two-hundredths left.
Also, as we have less than 9 tenths we do not have to regroup and add the ones.
The answer is 2.82.
As we have more than 9 hundredths we have to regroup and mid the tenths.

Share and Show – Page No. 131

Complete the quick picture to find the difference.

Question 1.
0.62 − 0.18 =
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 20
______

Answer:
grade 5 chapter 3 Add and Subtract Decimals 131 image 1

Explanation:
0.62 − 0.18
Subtract hundredths:  2 – 8;
There are not enough hundredths. So, regroup
12 – 8 = 4
Subtract tenths: 5 – 1 = 4
Subtract ones: 0 – 0 = 0
So, 0.62 − 0.18 = 0.44

Subtract. Draw a quick picture.

Question 2.
3.41 − 1.74 =
______

Answer:
grade 5 chapter 3 Add and Subtract Decimals 131 image 2

Explanation:
3.41 − 1.74
Subtract hundredths:  1 – 4;
There are not enough hundredths. So, regroup
11 – 4 = 7
Subtract tenths: 3 – 7
There are not enough tenths. So, regroup
13 – 7 = 6
Subtract ones: 2 – 1 = 1
So, 3.41 − 1.74 = 1.67

Question 3.
0.84 − 0.57 =
______

Answer:
grade 5 chapter 3 Add and Subtract Decimals 131 image 3

Explanation:
0.84 − 0.57
Subtract hundredths:  4 – 7;
There are not enough hundredths. So, regroup
14 – 7 = 7
Subtract tenths: 7 – 5 = 2
Subtract ones: 0 – 0 = 0
So, 0.84 − 0.57 = 0.27

Go Math Grade 5 Chapter 3 Lesson 3.6 Answer Key Question 4.
4.05 − 1.61 =
______

Answer:
grade 5 chapter 3 Add and Subtract Decimals 131 image 4

Explanation:
4.05 − 1.61
Subtract hundredths:  5 – 1 = 4;
Subtract tenths: 0 – 6
There are not enough hundredths. So, regroup
10 – 6 = 4
Subtract ones: 3 – 1 = 2
So, 4.05 − 1.61 = 2.44

Problem Solving Applications

Question 6.
Write a decimal subtraction equation that requires regrouping from the tenths. Explain how you know you will need to regroup.
Type below:
__________

Answer:
Subtract 0.32 and 0.05
Subtract hundredths. As there are not enough hundredths we have to regroup. So, we have 10 more hundredths and one-tenth I.
Subtract tenths. As there are enough tenths we do not have to regroup.
The answer: 0.27

Pose a Problem – Page No. 132

Question 7.
Antonio left his MathBoard on his desk during lunch. The quick picture below shows the problem he was working on when he left.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 21
Write a word problem that can be solved using the quick picture above.
Pose a problem.          Solve your problem.
Type below:
__________

Answer:
From the given picture, he has drawn eight-hundredths and crosses two-hundredths. Then, he has drawn six tenths and crossed four-tenths. When comes to ones. he has taken three ones and crossed two out of them.
there are 7 – 2 = 5 hundredths
6 – 4 = 2 tenths
3 – 2 = 1 ones
1.25

Question 7.
Use Reasoning Describe how you can change the problem by changing the quick picture.
Type below:
__________

Answer:
By changing the quick picture, the value of place value is changed.

Question 8.
The price of a box of markers at a retail store is $4.65. he price of a box of markers at the school bookstore is $3.90. How much more do the markers cost at the retail store? Explain how you can use a quick picture to solve the problem.
$ ______

Answer:
The price of a box of markers at a retail store is $4.65. he price of a box of markers at the school bookstore is $3.90.
$4.65 – $3.90 = $0.75
grade 5 chapter 3 Add and Subtract Decimals 131 image 5

Concepts and Skills – Page No. 133

Question 1.
Explain how you can use base-ten blocks to find 1.54 + 2.37.
Type below:
__________

Answer:
1.54 + 2.37
Add hundredths 4 + 7 = 11; Regroup
Add tenths 5 + 3 + 1 = 9;
Add ones 2 + 1 = 3
1.54 + 2.37 = 3.91
We have to use three square boxes to show three ones, 9 lines to show 9 tenths, and 1 dot to show one hundredth

Complete the sentence.

Question 2.
0.04 is \(\frac{1}{10}\) of

Answer:
0.04 is \(\frac{1}{10}\) of 0.4

Explanation:
Let the unknown number is S
0.04 = \(\frac{1}{10}\)S
S = 0.04 x 10 = 0.4

Question 3.
0.06 is 10 times as much as

Answer:
\(\frac{6}{1000}\) = 0.006

Explanation:
Let the unknown number is S
0.06 = 10S
S = 0.06/10
S = \(\frac{6}{100}\) x \(\frac{1}{10}\)
S = \(\frac{6}{1000}\) = 0.006

Write the value of the underlined digit.

Question 4.
6.54
Type below:
__________

Answer:
4 hundredths = 0.04

Explanation:
(6 x 1) + (5 x \(\frac{1}{10}\)) + (4 x \(\frac{1}{100}\))
4 x \(\frac{1}{100}\) = 4 hundredths = 0.04

Question 5.
0.837
Type below:
__________

Answer:
8 tenths = 0.8

Explanation:
(0 x 1) + (8 x \(\frac{1}{10}\)) + (3 x \(\frac{1}{100}\)) + (7 x \(\frac{1}{1000}\))
8 x \(\frac{1}{10}\) = 8 tenths = 0.8

Question 6.
8.702
Type below:
__________

Answer:
2 thousandths = 0.002

Explanation:
(8 x 1) + (7 x \(\frac{1}{10}\)) + (0 x \(\frac{1}{100}\)) + (2 x \(\frac{1}{1000}\))
2 x \(\frac{1}{1000}\) = 2 thousandths = 0.002

Question 7.
9.173
Type below:
__________

Answer:
9 ones = 9

Explanation:
(9 x 1) + (1 x \(\frac{1}{10}\)) + (7 x \(\frac{1}{100}\)) + (3 x \(\frac{1}{1000}\))
9 x 1 = 9 ones = 9

Compare. Write <, >, or =.

Question 8.
6.52 _____ 6.520

Answer:
6.52 = 6.520

Explanation:
Compare the ones; 6 = 6
Compare the tenths; 5 = 5
Compare the hundredths; 2 = 2
Compare the thousandths; 0 = 0
So, 6.52 = 6.520

Question 9.
3.589 _____ 3.598

Answer:
3.589 < 3.598

Explanation:
Compare the ones; 3 = 3
Compare the tenths; 5 = 5
Compare the hundredths; 8 < 9
So, 3.589 < 3.598

Question 10.
8.483 _____ 8.463

Answer:
8.483 > 8.463

Explanation:
Compare the ones; 8 = 8
Compare the tenths; 4 = 4
Compare the hundredths; 8 > 6
So, 8.483 > 8.463

Write the place value of the underlined digit. Round each number to the place of the underlined digit.

Question 11.
0.724
Place value: __________
Round: __________

Answer:
Place value: 7 tenths = 0.7
Round: 0.7

Explanation:
0.724
(0 x 1) + (7 x \(\frac{1}{10}\)) + (2 x \(\frac{1}{100}\)) + (4 x \(\frac{1}{1000}\))
Place Value: 7 x \(\frac{1}{10}\) = 7 tenths = 0.7
0.724
2 < 5
0.7

Question 12.
2.576
Place value: __________
Round: __________

Answer:
Place value: 2 ones = 2
Round: 3

Explanation:
2.576
(2 x 1) + (5 x \(\frac{1}{10}\)) + (7 x \(\frac{1}{100}\)) + (6 x \(\frac{1}{1000}\))
Place Value: 2 x 1 = 2 ones = 2
2.576
5 = 5
3

Question 13.
4.769
Place value: __________
Round: __________

Answer:
Place value: 6 hundredths = 0.06
Round: 4.77

Explanation:
4.769
(4 x 1) + (7 x \(\frac{1}{10}\)) + (6 x \(\frac{1}{100}\)) + (9 x \(\frac{1}{1000}\))
Place Value: 6 x \(\frac{1}{100}\)) = 6 hundredths = 0.06
4.769
9 > 5
4.77

Draw a quick picture to find the sum or difference.

Question 14.
2.46 + 0.78 =

Answer:
grade 5 chapter 3 Add and Subtract Decimals 133 image 1

Explanation:
2.46 + 0.78 = 3.24

Question 15.
3.27 − 1.84 =

Answer:
grade 5 chapter 3 Add and Subtract Decimals 133 image 2

Explanation:
3.27 − 1.84 = 1.43

Page No. 134

Question 16.
Marco read that a honeybee can fly up to 2.548 meters per second. He rounded the number to 2.55. To which place value did Marco round the speed of a honeybee?
__________

Answer:
Marco read that a honeybee can fly up to 2.548 meters per second. He rounded the number to 2.55.
The speed of a honeybee is 2.548.
Marco has to round this number to the nearest hundredth to get 2.55.
The digit in the hundredths places increases by 1.
The 8 > 5
So, the rounded number is 2.55.

Question 17.
What is the relationship between 0.04 and 0.004?
Type below:
__________

Answer:
Compare ones; 0 = 0
Compare tenths; 0 = 0
Compare hundredths; 4 > 0
So, 0.04 > 0.004

Go Math Grade 5 Workbook Lesson 3.7 Answer Key Question 18.
Jodi drew a quick picture to model the answer for 3.14 − 1.75. Draw what her picture might look like.
Type below:
__________

Answer:
grade 5 chapter 3 Add and Subtract Decimals 133 image 3

Explanation:
Jodi drew a quick picture to model the answer for 3.14 − 1.75
3.14 – 1.75 = 1.39

Question 19.
The average annual rainfall in California is 0.564 of a meter per year. What is the value of the digit 4 in that number?
Type below:
__________

Answer:
The average annual rainfall in California is 0.564 of a meter per year.
(0 x 1) + (5 x \(\frac{1}{10}\)) + (6 x \(\frac{1}{100}\)) + (4 x \(\frac{1}{1000}\))
4 x \(\frac{1}{1000}\) = 4 thousandths = 0.004

Question 20.
Jan ran 1.256 miles on Monday, 1.265 miles on Wednesday, and 1.268 miles on Friday. What were her distances from greatest to least?
_____ mi; _____ mi; _____ mi

Answer:
1.268 mi; 1.265 mi; 1.256 mi

Explanation:
Jan ran 1.256 miles on Monday, 1.265 miles on Wednesday, and 1.268 miles on Friday.
Compare hundredths: 6 > 5
So, 1.265; 1.268; 1.256
Compare thousandths in 1.265 and 1.268
8 > 5
1.268 mi; 1.265 mi; 1.256 mi

Share and Show – Page No. 137

Use rounding to estimate.

Question 1.
2.3 4
1.9
+5.2 3
————
Estimate: _____

Answer:
Estimate: About 9

Explanation:
2.34; 3 < 5; 2
1.9; 9 > 5; 2
5.23; 2 < 5; 5
Add: 2 + 2 + 5 = 9

Question 2.
10.3 9
-4.2 8
————
Estimate: _____

Answer:
Estimate: About 6

Explanation:
10.39; 3 < 5; 10
4.28; 2 < 5; 4
Subtract: 10 – 4 = 6

Go Math Lesson 3.7 5th Grade Answer Key Question 3.
$ 19.7 5
+$3.9 8
————
Estimate: $ _____

Answer:
Estimate: About $24

Explanation:
19.7 5; 7 > 5; 20
3.98; 9 > 5; 4
20 + 4 = 24

Use benchmarks to estimate.

Question 4.
0.3 4
0.1
+0.2 5
————
Estimate: _____

Answer:
Estimate: About 0.55

Explanation:
0.3 4 is closer to 0.35
0.1 is closer to 0
0.25
0.35 + 0 + 0.25 = 0.55

Question 5.
10.3 9
-4.2 8
————
Estimate: _____

Answer:
Estimate: About 6

Explanation:
10.3 9 is closer to 10
4.2 8 is closer to 4
10 – 4 = 6

On Your Own

Use rounding to estimate.

Question 6.
0.9 3
+0.1 8
————
Estimate: _____

Answer:
Estimate: About 1

Explanation:
0.93; 9 >5; 1
0.18; 1 < 5; 0
1 + 0 = 1

Question 7.
7.4 1
-3.8 8
————
Estimate: _____

Answer:
Estimate: About 3

Explanation:
7.41; 4 < 5; 7
3.88; 8 > 5; 4
7 – 4 = 3

Question 8.
14.6 8
-3.9 3
————
Estimate: _____

Answer:
Estimate: About 11

Explanation:
14.68; 6 > 5; 15
3.93; 9 > 5; 4
15 – 4 = 11

Use benchmarks to estimate.

Question 9.
12.4 1
-6.4 7
————
Estimate: _____

Answer:
Estimate: About 6

Explanation:
12.41 is closer to 12
6.47 is closer to 6
12 – 6 = 6

Question 10.
8.1 2
-5.5 2
————
Estimate: _____

Answer:
Estimate: About 2

Explanation:
8.12 is closer to 8
5.52 is closer to 6
8 – 6 = 2

Question 11.
9.7 5
-3.4 7
————
Estimate: _____

Answer:
Estimate: About 7

Explanation:
9.75 is closer to 10
3.47 is closer to 3
10 – 3 = 7

Practice: Copy and Solve Use rounding or benchmarks to estimate.

Question 12.
12.83 + 16.24
Estimate: _____

Answer:
Estimate: About 29

Explanation:
12.83; 8 > 5; 13
16.24; 2 <5; 16
13 + 16 = 29

Question 13.
$26.92 − $11.13
Estimate: $ _____

Answer:
Estimate: About $16

Explanation:
26.92; 9 > 5; 27
11.13; 1 < 5; 11
27 – 11 = 16

Go Math Grade 5 Lesson 3.7 Answer Key Question 14.
9.41 + 3.82
Estimate: _____

Answer:
Estimate: About 13

Explanation:
9.41; 4 < 5; 9
3.82; 8 > 5; 4
9 + 4 = 13

Use Reasoning Estimate to compare. Write < or >.

Question 15.
2.74 + 4.22 _____ 3.13 + 1.87

Answer:
2.74 + 4.22 > 3.13 + 1.87

Explanation:
2.74; 7 > 5; 3
4.22; 2 < 5 ; 4
3 + 4 = 7
3.13; 1 < 5; 3
1.87; 8 > 5; 2
3 + 2 = 5
So, 7 > 5
2.74 + 4.22 > 3.13 + 1.87

Question 16.
6.25 – 2.39 _____ 9.79 – 3.84

Answer:
6.25 – 2.39 < 9.79 – 3.84

Explanation:
6.25; 2 < 5; 6
2.39; 3 < 5; 2
6 – 2 = 4
9.79; 7 > 5; 10
3.84; 8 >5; 4
10 – 4 = 6
4 < 6
6.25 – 2.39 < 9.79 – 3.84

Problem Solving Applications – Page No. 138

Use the table to solve 17–18. Show your work.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 22

Question 17.
For the week of April 4, 1964, the Beatles had the top four songs. About how long would it take to listen to these four songs?
about _____ minutes

Answer:
about 10 minutes

Explanation:
Can’t Buy Me Love = 2.30 min
She Loves You = 2.50 min
I Want to Hold You Hand = 2.75 min
Please Please Me = 2.00 min
2.30; 3 < 5; 2
2.50; 5 = 5; 3
2.75; 7 > 5; 3
2.00; 2 < 5; 2
2 + 3 + 3 + 2 = 10 min

Question 18.
What’s the Error? Isabelle says she can listen to the first three songs in the table in 6 minutes.
Type below:
_________

Answer:
Can’t Buy Me Love = 2.30 min
She Loves You = 2.50 min
I Want to Hold You Hand = 2.75 min
2.30; 3 < 5; 2
2.50; 5 = 5; 3
2.75; 7 > 5; 3
2 + 3 + 3 = 8 minutes
About 8 minutes

Question 19.
Tracy ran a lap around the school track in 74.2 seconds. Malcolm ran a lap in 65.92 seconds. Estimate the difference in the times in which the students completed the lap.
about _____ seconds

Answer:
about 8 seconds

Explanation:
Tracy ran a lap around the school track in 74.2 seconds.
74.2; 2 < 5; 74
Malcolm ran a lap in 65.92 seconds.
65.92; 9 > 5; 66
74 – 66 = 8
about 8 seconds

Nutrition

Your body needs protein to build and repair cells. You should get a new supply of protein each day. The average 10-year-old needs 35 grams of protein daily. You can find protein in foods like meat, vegetables, and dairy products.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 23
Use estimation to solve.

Question 20.
Gina had a scrambled egg and a cup of low-fat milk for breakfast. She had an oat bran muffin for a morning snack. About how many more grams of protein did Gina have for breakfast than for a snack?
about _____ grams

Answer:
about 17 grams

Explanation:
Gina had a scrambled egg and a cup of low-fat milk for breakfast. She had an oat bran muffin for a morning snack.
1 scrambled egg = 6.75 grams
1 cup shredded whear cereal = 5.56 grams
1 oat bran muffin = 3.99 grams
1 cup low-fat milk = 8.22 grams
6.75; 7 > 5; 7
8.22; 2 < 5; 8
3.99; 9 > 5; 4
7 + 2 + 9 = 18
The average 10-year-old needs 35 grams of protein daily.
So, 35 – 18 = 17
Gina have 17 more grams of protein for breakfast than for a snack.

Question 21.
Pablo had a cup of shredded wheat cereal, a cup of low-fat milk, and one other item for breakfast. He had about 21 grams of protein. What was the third item Pablo had for breakfast?
_________

Answer:
6 grams

Explanation:
1 cup shredded wheat cereal = 5.56 grams
1 cup low-fat milk = 8.22 grams
5.56; 5 = 5; 6
8.22; 2 < 5; 9
6 + 9 = 15
15 + S = 21 grams
S = 21 – 15 = 6 grams
The third item Pablo had 6 grams for breakfast

Share and Show – Page No. 140

Estimate. Then find the sum.

Question 1.
2.5
+4.6
Estimate: _____
Sum: _____

Answer:
Estimate: 8
Sum: 7.1

Explanation:
2.5 nearest whole number is 3
4.6 nearest whole number is 5
Estimate: 3 + 5 = 8
Sum: 2.5 + 4.6 = 7.1

Question 2.
8.7 5
+6.4 3
Estimate: _____
Sum: _____

Answer:
Estimate: 15
Sum: 15.18

Explanation:
8.75 nearest whole number is 9
6.43 nearest whole number is 6
Estimate: 9 + 6 = 15
Sum: 8.75 + 6.43 = 15.18

Question 3.
2.0 3
+7.8 9
Estimate: _____
Sum: _____

Answer:
Estimate: 10
Sum: 9.92

Explanation:
2.03 nearest whole number is 2
7.89 nearest whole number is 8
Estimate: 2 + 8 = 10
Sum: 2.03 + 7.89 = 9.92

Question 4.
6.34 + 3.8 =
Estimate: _____
Sum: _____

Answer:
Estimate: 10
Sum: 10.14

Explanation:
6.34 nearest whole number is 6
3.8 nearest whole number is 4
Estimate: 6 + 4 = 10
Sum: 6.34 + 3.8 = 10.14

5th Grade Go Math Chapter 3 Practice and Homework Lesson 3.8 Question 5.
5.63 + 2.6 =
Estimate: _____
Sum: _____

Answer:
Estimate: 9
Sum: 8.23

Explanation:
5.63 nearest whole number is 6
2.6 nearest whole number is 3
Estimate: 6 + 3 = 9
Sum: 5.63 + 2.6 = 8.23

On Your Own – Page No. 141

Connect Symbols and Words Find the sum.

Question 6.
seven and twenty-five hundredths added to nine and four tenths
Type below:
________

Answer:
7.25 + 9.4 = 16.65

Explanation:
seven and twenty-five hundredths = 7.25
nine and four tenths = 9.4
7.25 + 9.4 = 16.65

Question 7.
twelve and eight hundredths added to four and thirty-five hundredths
Type below:
________

Answer:
12.08 + 4.35 = 16.43

Explanation:
twelve and eight hundredths = 12.08
four and thirty-five hundredths = 4.35
12.08 + 4.35 = 16.43

Question 8.
nineteen and seven tenths added to four and ninety-two hundredths
Type below:
________

Answer:
19.7 + 4.92 = 24.62

Explanation:
nineteen and seven tenths  = 19.7
four and ninety-two hundredths = 4.92
19.7 + 4.92 = 24.62

Question 9.
one and eighty-two hundredths added to fifteen and eight tenths
Type below:
________

Answer:
1.82 + 15.8 = 17.62

Explanation:
one and eighty-two hundredths = 1.82
fifteen and eight tenths = 15.8
1.82 + 15.8 = 17.62

Practice: Copy and Solve Find the sum.

Question 10.
7.99 + 8.34
_____

Answer:
16.33

Explanation:
7.99 + 8.34
Add hundredths; 9 + 4 = 13; regroup
Add tenths; 9 + 3 + 1 = 13; regroup
Add tens; 7 + 8  + 1 = 16
16.33

Question 11.
15.76 + 8.2
_____

Answer:
23.96

Explanation:
15.76 + 8.2
Add hundredths; 6 + 0 = 6;
Add tenths; 7 + 2 = 9;
Add tens; 5 + 8  = 13; regroup
Add hundreds; 1 + 1 = 2
23.96

Question 12.
9.6 + 5.49
_____

Answer:
15.09

Explanation:
9.6 + 5.49
Add hundredths; 0 + 9 = 9;
Add tenths; 6 + 4 = 10; regroup;
Add tens; 9 + 5 +  1 = 15; regroup
15.09

Question 13.
33.5 + 16.4
_____

Answer:
49.9

Explanation:
33.5 + 16.4
Add tenths; 5 + 4 = 9;
Add tens; 3 + 6 = 9;
Add hundreds; 3 + 1 = 4
49.9

Question 14.
9.84 + 21.52
_____

Answer:
31.36

Explanation:
9.84 + 21.52
Add hundredths; 4 + 2 = 6;
Add tenths; 8 + 5 = 13; regroup
Add tens; 9 + 1 + 1  = 11; regroup
Add hundreds; 0 + 2 + 1 = 3
31.36

Question 15.
3.89 + 4.6
_____

Answer:
8.49

Explanation:
3.89 + 4.6
Add hundredths; 9 + 0 = 9;
Add tenths; 8 + 6 = 14;
Add tens; 3 + 4 + 1 = 8;
8.49

Question 16.
42.19 + 8.8
_____

Answer:
50.99

Explanation:
42.19 + 8.8
Add hundredths; 0 + 9 = 9;
Add tenths; 1 + 8 = 9;
Add tens; 2 + 8  = 10; regroup
Add hundreds; 4 + 1 = 5
50.99

Question 17.
16.74 + 5.34
_____

Answer:
22.08

Explanation:
16.74 + 5.34
Add hundredths; 4 + 4 = 8;
Add tenths; 7 + 3 = 10; regroup
Add tens; 6 + 5 + 1 = 12; regroup
Add hundreds; 1 + 1 = 2
22.08

Question 18.
27.58 + 83.9
_____

Answer:
111.48

Explanation:
27.58 + 83.9
Add hundredths; 8 + 0 = 8;
Add tenths; 5 + 9 = 14; regroup
Add tens; 7 + 3 + 1  = 11; regroup
Add hundreds; 2 + 8 + 1 = 11
111.48

Question 19.
Tania measured the growth of her plant each week. The first week, the plant’s height measured 2.65 decimeters. During the second week, Tania’s plant grew 0.7 decimeter. How tall was Tania’s plant at the end of the second week?
Describe the steps you took to solve the problem.
_____ decimeters

Answer:
3.35 decimeters

Explanation:
Tania measured the growth of her plant each week. The first week, the plant’s height measured 2.65 decimeters. During the second week, Tania’s plant grew 0.7 decimeters.
2.65 + 0.7 = 3.35

Question 20.
Maggie had $35.13. Then her mom gave her $7.50 for watching her younger brother. She was paid $10.35 for her old roller skates. How much money does Maggie have now?
$ _____

Answer:
$52.98

Explanation:
Maggie had $35.13. Then her mom gave her $7.50 for watching her younger brother. She was paid $10.35 for her old roller skates.
35.13 + 7.50 + 10.35 = 52.98

Unlock the Problem – Page No. 142

Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 24

Question 21.
A city receives an average rainfall of 16.99 centimeters in August. One year, during the month of August, it rained 8.33 centimeters by August 15th. Then it rained another 4.65 centimeters through the end of the month. What was the total rainfall in centimeters for the month?
a. What do you need to find?
Type below:
________

Answer:
We need to find out what was the total rainfall in centimeters for the month, so we have to find the sum 8.33+ 4.65.

Explanation:
A city receives an average rainfall of 16.99 centimeters in August. One year, during the month of August, it rained 8.33 centimeters by August 15th. Then it rained another 4.65 centimeters through the end of the month. We need to find out what was the total rainfall in centimeters for the month, so we have to find the sum 8.33+ 4.65.

Question 21.
b. What information are you given?
Type below:
________

Answer:
We know that one year during the month Aug., it rained 8.33 centimeters by Aug. 15th. Then it rained another 4.65 centimeters through the end of the month.

Question 21.
c. How will you use addition to find the total number of centimeters of rain that fell?
Type below:
________

Answer:
We have to add the hundredths first, then the tenths and in the end the ones.

Question 21.
d. Show how you solved the problem.
Type below:
________

Answer:
sum 8.33+ 4.65.
Add the hundredths first. 3 hundredths + 5 hundredths = 8 hundredths.
Add the tenths. 3 tenths + 6 tenths = 9 tenths.
Add the ones. 8 + 4 = 12 tens
Therefore, the sum is 8.33+ 4.65 = 12.98.

Question 21.
e. Complete the sentence. It rained _________ centimeters for the month.
______ centimeters

Answer:
12.98 centimeters

Explanation:
It rained 12.98 centimeters for the month.

Question 22.
Horatio caught a fish that weighed 1.25 pounds. Later he caught another fish that weighed 1.92 pounds. What was the combined weight of both fish? Use the digits on the tiles to solve the problem. Digits may be used more than once or not at all.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 25
______ pounds

Answer:
3.17 pounds

Explanation:
Horatio caught a fish that weighed 1.25 pounds. Later he caught another fish that weighed 1.92 pounds.
1.25 + 1.92 = 3.17 pounds
grade 5 chapter 3 Add and Subtract Decimals 143 image 1

Share and Show – Page No. 144

Estimate. Then find the difference.

Question 1.
5.8 3
−2.1 8
———-
Estimate: ______
Difference: ______

Answer:
Estimate: 4
Difference: 3.65

Explanation:
5.83 is closer to 6
2.18 is closer to 2
6 – 2 = 4
5.83 – 2.18 = 3.65

Question 2.
4.4 5
−1.8 6
———–
Estimate: ______
Difference: ______

Answer:
Estimate: 2
Difference: 2.59

Explanation:
4.45 is closer to 4
1.86 is closer to 2
4 – 2 = 2
4.45 – 1.86 = 2.59

Question 3.
4.0 3
−2.2 5
———-
Estimate: ______
Difference: ______

Answer:
Estimate: 2
Difference: 1.78

Explanation:
4.03 is closer to 4
2.25 is closer to 2
4 – 2 = 2
4.03 – 2.25 = 1.78

Find the difference. Check your answer.

Question 4.
0.7 0
−0.4 3
———-
______

Answer:
0.27

Explanation:
0.70 − 0.43
Subtract hundredths: 0 – 3;
There are not enough hundredths. So, regroup
10 – 3 = 7
Subtract tenths: 6 – 4 = 2
Subtract ones: 0 – 0 = 0
0.27
Check: 0.70 − 0.43 = 0.27
0.27 = 0.27

Question 5.
13.2
−8.0 4
———-
______

Answer:
5.16

Explanation:
13.2 − 8.04
Subtract hundredths: 0 – 4;
There are not enough hundredths. So, regroup
10 – 4 = 6
Subtract tenths: 1 – 0 = 1
Subtract ones: 3 – 8;
There are not enough tens. So, regroup
13 – 8 = 5
Subtract hundreds: 0 – 0 = 0;
5.16
Check: 13.2 − 8.04 = 5.16
5.16 = 5.16

Go Math Grade 5 Chapter 3 Pdf Lesson 3.9 Answer Key Question 6.
15.8
−9.6 7
———-
______

Answer:
6.13

Explanation:
15.8 − 9.67
Subtract hundredths: 0 – 7;
There are not enough hundredths. So, regroup
10 – 7 = 3
Subtract tenths: 7 – 6 = 1
Subtract ones: 5 – 9;
There are not enough ones. So, regroup
15 – 9 = 6
Subtract hundreds: 0 – 0 = 0;
6.13
Check: 15.8 − 9.67 = 6.13
6.13 = 6.13

On Your Own – Page No. 145

Connect Symbols and Words Find the difference.

Question 7.
three and seventy-two hundredths subtracted from five and eighty-one hundredths
______

Answer:
three and seventy-two hundredths = 3.72
five and eighty-one hundredths = 5.81
5.81 – 3.72 = 2.09

Question 8.
one and six-hundredths subtracted from eight and thirty-two hundredths
______

Answer:
one and six-hundredths = 1.06
eight and thirty-two hundredths = 8.23
8.23 – 1.06 = 7.17

Use Reasoning Algebra Write the unknown number for n.

Question 9.
5.28 − 3.4 = n
n = ______

Answer:
n = 1.88

Explanation:
5.28 − 3.4 = 1.88

Question 10.
n − 6.47 = 4.32
n = ______

Answer:
n = 10.79

Explanation:
n − 6.47 = 4.32
n = 4.32 + 6.47
n = 10.79

Question 11.
11.57 − n = 7.51
n = ______

Answer:
n = 4.06

Explanation:
11.57 − n = 7.51
11.57 = 7.51 + n
n = 11.57 – 7.51
n = 4.06

Practice: Copy and Solve Find the difference.

Question 12.
8.42 − 5.14 = ______

Answer:
3.28

Explanation:
8.42 − 5.14
Subtract hundredths: 2 – 4;
There are not enough hundredths. So, regroup
12 – 4 = 8
Subtract tenths: 3 – 1 = 2
Subtract ones: 8 – 5 = 3
3.28

Question 13.
16.46 − 13.87 = ______

Answer:
2.59

Explanation:
16.46 − 13.87
Subtract hundredths: 6 – 7;
There are not enough hundredths. So, regroup
16 – 7 = 9
Subtract tenths: 3 – 8
There are not enough tenths. So, regroup
13 – 8 = 5
Subtract ones: 5 – 3 = 2;
Subtract hundreds: 1 – 1 = 0;
2.59

Question 14.
34.27 − 17.51 = ______

Answer:
16.76

Explanation:
34.27 − 17.51
Subtract hundredths: 7 – 1 = 6;
Subtract tenths: 2 – 5
There are not enough tenths. So, regroup
12 – 5 = 7;
Subtract ones: 3 – 7
There are not enough ones. So, regroup
13 – 7 = 6
Subtract hundreds: 2 – 1 = 1;
16.76

Question 15.
15.83 − 11.45 = ______

Answer:
4.38

Explanation:
15.83 − 11.45
Subtract hundredths: 3 – 5;
There are not enough hundredths. So, regroup
13 – 5 = 8
Subtract tenths: 7 – 4 = 3
Subtract ones: 5 – 1 = 4;
Subtract hundreds: 1 – 1 = 0;
4.38

Question 16.
12.74 − 10.54 = ______

Answer:
2.2

Explanation:
12.74 − 10.54
Subtract hundredths: 4 – 4 = 0;
Subtract tenths: 7 – 5 = 2
Subtract ones: 2 – 0 = 2;
Subtract hundreds: 1 – 1 = 0;
2.20

Question 17.
48.21 − 13.65 = ______

Answer:
34.56

Explanation:
48.21 − 13.65
Subtract hundredths: 1 – 5;
There are not enough hundredths. So, regroup
11 – 5 = 6
Subtract tenths: 1 – 6
There are not enough tenths. So, regroup
11 – 6 = 5
Subtract ones: 7 – 3 = 4;
Subtract hundreds: 4 – 1 = 3;
34.56

Question 18.
Beth finished a race in 3.35 minutes. Ana finished the race in 0.8 minute less than Beth. Fran finished the race in 1.02 minutes less than Ana. What was Fran’s time to finish the race in minutes?
______ minutes

Answer:
1.53 minutes

Explanation:
Beth finished a race in 3.35 minutes. Ana finished the race in 0.8 minute less than Beth.
3.35 – 0.8 = 2.55
Fran finished the race in 1.02 minutes less than Ana.
2.55 – 1.02 = 1.53

Question 19.
Fatima planted sunflower seeds in a flower patch. The tallest sunflower grew 2.65 meters tall. The height of the shortest sunflower was 0.34 meter less than the tallest sunflower. What was the height, in meters, of the shortest sunflower?
______ meters

Answer:
2.31 meters

Explanation:
Fatima planted sunflower seeds in a flower patch. The tallest sunflower grew 2.65 meters tall. The height of the shortest sunflower was 0.34 meter less than the tallest sunflower.
2.65 – 0.34 = 2.31

Unlock the Problem – Page No. 146

Question 20.
In peanut butter, how many more grams of protein are there than grams of carbohydrates? Use the label below.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 26
a. What do you need to know?
Type below:
_________

Answer:
We need to find how many more grams of protein are there than grams of carbohydrates.

Question 20.
b. How will you use subtraction to find how many more grams of protein there are than grams of carbohydrates?
Type below:
_________

Answer:
Grams of protein = 8.1 g
grams of carbohydrates = 6.2g
8.1 – 6.2 = 1.9 grams

Question 20.
c. Show how you solved the problem.
Type below:
_________

Answer:
8.1 – 6.2
Subtract tenths: 1 – 2
There are not enough tenths. So, regroup
11 – 2 = 9
Subtract ones:
7 – 6 = 1
1.9 grams

Question 20.
d. Complete each sentence.
The peanut butter has ______ grams of protein.
The peanut butter has ______ grams of carbohydrates.
There are ______ more grams of protein than grams of carbohydrates in the peanut butter.
Type below:
_________

Answer:
The peanut butter has 8.1 grams of protein.
The peanut butter has 6.2 grams of carbohydrates.
There are 1.9 more grams of protein than grams of carbohydrates in the peanut butter.

Question 21.
Kyle is building a block tower. Right now the tower stands 0.89 meters tall. How much higher does the tower need to be to reach a height of 1.74 meters?
______ meters

Answer:
0.85 meters

Explanation:
Kyle is building a block tower. Right now the tower stands 0.89 meters tall.
To reach a height of 1.74, 1.74 – 0.89 = 0.85

Question 22.
Dialyn scored 2.5 points higher than Gina at a gymnastics event. Select the values that could represent each student’s gymnastics score. Mark all that apply.
Options:
a. Dialyn: 18.4 points, Gina: 16.9 points
b. Dialyn: 15.4 points, Gina: 13.35 points
c. Dialyn: 16.2 points, Gina: 13.7 points
d. Dialyn: 19.25 points, Gina: 16.75 points

Answer:
c. Dialyn: 16.2 points, Gina: 13.7 points
d. Dialyn: 19.25 points, Gina: 16.75 points

Explanation:
Dialyn scored 2.5 points higher than Gina at a gymnastics event.
a. 18.4 – 16.9 = 1.5
b. 15.4 – 13.35 = 2.05
c. 16.2 – 13.7 = 2.5
d. 19.25 – 16.75 = 2.5

Share and Show – Page No. 149

Write a rule for the sequence.

Question 1.
0.5, 1.8, 3.1, 4.4, …
Think: Is the sequence increasing or decreasing?
Rule: _________

Answer:
Add 1.3 to the previous term in the sequence to get the next one.

Explanation:
Compare 0.5, 1.8; 0.5 < 1.8
The sequence is increasing as the second term is greater than the first term.
The operation will use addition.
0.5 + x = 1.8
x = 1.8 – 0.5 = 1.3
1.8 + 1.3 = 3.1
3.1 + 1.3 = 4.4
Add 1.3 to the previous term in the sequence to get the next one.

Question 2.
23.2, 22.1, 21, 19.9, …
Rule: _________

Answer:
Subtract 1.1 to the previous term in the sequence to get the next one.

Explanation:
Compare 23.2 and 22.1; 23.2 > 22.1
The sequence is decreasing as the second term is lesser than the first term.
The operation will use subtraction.
23.2 – 22.1 = 1.1
22.1 – 21 = 1.1
21 – 19.9 = 1.1
Subtract 1.1 to the previous term in the sequence to get the next one.

Write a rule for the sequence. Then find the unknown term.

Question 3.
0.3, 1.5, ____ , 3.9, 5.1
Missing value: ______
Rule: ______

Answer:
Missing value: 2.7
Rule: Add 1.2 to the previous term in the sequence to get the next one.

Explanation:
Compare 0.3 and 1.5; 0.3 < 1.5
The sequence is increasing as the second term is greater than the first term.
The operation will use addition.
1.5 – 0.3 = 1.2
0.3 + 1.2 = 1.5
1.5 + 1.2 = 2.7
2.7 + 1.2 = 3.9
3.9 + 1.2 = 5.1
Add 1.2 to the previous term in the sequence to get the next one.

Question 4.
19.5, 18.8, 18.1, 17.4, ______
Missing value: ______
Rule: ______

Answer:
Missing value: 16.7
Rule: Subtract 0.7 to the previous term in the sequence to get the next one.

Explanation:
Compare 19.5 and 18.8; 19.5 > 18.8
The sequence is decreasing as the second term is lesser than the first term.
The operation will use subtraction.
19.5 – 18.8 = 0.7
18.8 – 18.1 = 0.7
18.1 – 17.4 = 0.7
17.4 – 0.7 = 16.7
Subtract 0.7 to the previous term in the sequence to get the next one.

On Your Own

Write the first four terms of the sequence.

Question 5.
Rule: start at 10.64, subtract 1.45
______ ; ______ ; ______ ; ______

Answer:
9.19; 7.74; 6.29; 4.84

Explanation:
10.64 – 1.45 = 9.19
9.19 – 1.45 = 7.74
7.74 – 1.45 = 6.29
6.29 – 1.45 = 4.84
9.19; 7.74; 6.29; 4.84

Question 6.
Rule: start at 0.87, add 2.15
______ ; ______ ; ______ ; ______

Answer:
3.02; 5.17; 7.32; 9.47

Explanation:
0.87 + 2.15 = 3.02
3.02 + 2.15 = 5.17
5.17 + 2.15 = 7.32
7.32 + 2.15 = 9.47
3.02; 5.17; 7.32; 9.47

Question 7.
Rule: start at 19.3, add 1.8
______ ; ______ ; ______ ; ______

Answer:
21.1; 22.9; 24.7; 26.5

Explanation:
19.3 + 1.8 = 21.1
21.1 + 1.8 = 22.9
22.9 + 1.8 = 24.7
24.7 + 1.8 = 26.5
21.1; 22.9; 24.7; 26.5

Question 8.
Rule: start at 29.7, subtract 0.4
______ ; ______ ; ______ ; ______

Answer:
29.3; 28.9; 28.5; 28.1

Explanation:
29.7 – 0.4 = 29.3
29.3 – 0.4 = 28.9
28.9 – 0.4 = 28.5
28.5 – 0.4 = 28.1
29.3; 28.9; 28.5; 28.1

Question 9.
Marta put $4.87 in her coin bank. Each day she added 1 quarter, 1 nickel, and 3 pennies. How much money was in her coin bank after 6 days? Describe the pattern you used to solve.
$ ______

Answer:
$10.52
Add 1.13 to the previous term in the sequence to get the next one.

Explanation:
Marta put $4.87 in her coin bank. Each day she added 1 quarter, 1 nickel, and 3 pennies.
She added 1.13 each day.
4.87 + 1.13 = 6.00
6.00 + 1.13 = 7.13
7.13 + 1.13 = 8.26
8.26 + 1.13 = 9.39
9.39 + 1.13 = 10.52
Add 1.13 to the previous term in the sequence to get the next one.

Question 10.
Identify Relationships Look at the list below. Do the numbers show a pattern? Explain how you know.
11.23, 10.75, 10.3, 9.82, 9.37, 8.89
Type below:
_________

Answer:
Compare 11.23 and 10.75; 11.23 > 10.75
The sequence is decreasing as the second term is greater than the first term.
The operation will use subtraction.
11.23 – 10.75 = 0.48
10.75 – 10.3 = 0.45
10.3 – 9.82 = 0.48
9.82 – 9.37 = 0.45
9.37 – 8.89 = 0.48
First two terms difference is 0.48
Second and third-term difference is 0.45
third and fourth term difference is 0.48
fourth and fifth term difference is 0.45
fifth and sixth term difference is 0.48

Problem Solving Applications – Page No. 150

Pose a Problem

Question 11.
Bren has a deck of cards. As shown below, each card is labeled with a rule describing a pattern in a sequence. Select a card and decide on a starting number. Use the rule to write the first five terms in your sequence.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 27
Sequence: _____ , _____ , _____ , _____ , _____
Write a problem that relates to your sequence and requires the sequence be extended to solve.
Pose a Problem         Solve your problem.
Type below:
_________

Answer:
1.6 + 0.33 = 1.93
1.93 + 0.33 = 2.26
2.26 + 0.33 = 2.59
2.59 + 0.33 = 2.92
2.92 + 0.33 = 3.25
Start at 1.6 and write the first five terms of the sequence?
Add 0.3 to the previous term in the sequence to get the next one.

Question 12.
Colleen and Tom are playing a number pattern game. Tom wrote the following sequence.
33.5, 34.6, 35.7, ________, 37.9
What is the unknown term in the sequence?
_____

Answer:
36.8

Explanation:
33.5 < 34.6
34.6 – 33.5 = 1.1
33.5 + 1.1 = 34.6
34.6 + 1.1 = 35.7
35.7 + 1.1 = 36.8
36.8 + 1.1 = 37.9

Share and Show – Page No. 153

Question 1.
Sara wants to buy a bottle of apple juice from a vending machine. She needs exactly $2.30. She has the following bills and coins:
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 28
Make and complete a table to find all the ways Sara could pay for the juice. First, draw a table with a column for each type of bill or coin. Next, fill in your table with each row showing a different way Sara can make exactly $2.30.
Type below:
_________

Answer:
Sara wants to buy a bottle of apple juice from a vending machine. She needs exactly $2.30.
grade 5 chapter 3 Add and Subtract Decimals 153 image 1

Question 2.
What if Sara decides to buy a bottle of water that costs $1.85? What are all the different ways she can make exactly $1.85 with the bills and coins she has? Which coin must Sara use?
Type below:
_________

Answer:
If Sara decides to buy a bottle of water that costs $1.85, then
1 bill, 3 quarters, 1 dime; 1 bill, 3 quarters, 2 nickels; quarter

Go Math 5th Grade 3.11 Answer Key Question 3.
At the end of August, Mr. Diaz had a balance of $441.62. Since then, he has written two checks for $157.34 and $19.74 and made a deposit of $575.00. Mr. Diaz says his balance is $739.54. Find Mr. Diaz’s correct balance.
$ _____

Answer:
At the end of August, Mr. Diaz had a balance of $441.62.
Since then, he has written two checks for $157.34 and $19.74 and made a deposit of $575.00.
Subtract the checks from the initial amount, and add the deposit.
441.85 – (157.34 + 19.74) + 575 = 839.77
So, $839.77

On Your Own – Page No. 154

Use the following information to solve 4–6.

At Open Skate Night, admission is $3.75 with a membership card and $5.00 without a membership card. Skate rentals are $3.00.

Question 4.
Aidan paid the admission for himself and two friends at Open Skate Night. Aidan had a membership card, but his friends did not. Aidan paid with a $20 bill. How much change should Aidan receive?
$ _____

Answer:
$6.25

Explanation:
Aidan had a membership card, but his friends did not.
$3.75 + $5.00 + $5.00 = $13.75
Aidan paid with a $20 bill.
$20 – $13.75 = $6.25

Question 5.
The Moores paid $6 more for skate rentals than the Cotters did. Together, the two families paid $30 for skate rentals. How many pairs of skates did the Moores rent?
_____ pairs of skates

Answer:
6 pairs of skates

Question 6.
Analyze Jennie and 5 of her friends are going to Open Skate Night. Jennie does not have a membership card. Only some of her friends have membership cards. What is the total amount that Jennie and her friends might pay for admission?
Type below:
_________

Answer:
They will pay $27.50 if only 2 of her friends have membership cards.

Question 7.
Marisol bought 5 movie tickets for a show. Each ticket cost $6.25. Complete the table to show the price of 2, 3, 4, and 5 tickets.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 29
Type below:
_________

Answer:
grade 5 chapter 3 Add and Subtract Decimals 153 image 2

Share and Show – Page No. 156

Find the sum or difference.

Question 1.
4.19 + 0.58
_____

Answer:
4.77

Explanation:
4.19 + 0.58 = 1.38
Add hundredths 9 + 8 = 17; Regroup;
Add tenths 1 + 5 + 1 = 7;
Add ones 4 + 0 = 4
4.19 + 0.58 = 4.77

Question 2.
9.99 − 4.1
_____

Answer:
5.89

Explanation:
9.99 − 4.1
Subtract hundredths: 9 – 0 = 9;
Subtract tenths: 9 – 1 = 8
Subtract ones: 9 – 4 = 5
So, 9.99 − 4.1 = 5.89

Question 3.
5.7 + 2.25 + 1.3
_____

Answer:
9.25

Explanation:
5.7 + 2.25 + 1.3
Add hundredths 0 + 5 + 0 = 5;
Add tenths 7 + 2 + 3 = 12; Regroup
Add ones 5 + 2 + 1 + 1 = 9
5.7 + 2.25 + 1.3 = 9.25

Question 4.
28.6 − 9.84
_____

Answer:
18.76

Explanation:
28.6 − 9.84
Subtract hundredths: 0 – 4;
There are not enough hundredths. So, regroup
10 – 4 = 6.
Subtract tenths: 5 – 8;
There are not enough tenths. So, regroup
15 – 8 = 7
Subtract ones: 7 – 9;
There are not enough ones. So, regroup
17 – 9 = 8
Subtract hundreds: 1 – 0 = 1;
So, 28.6 − 9.84 = 18.76

Question 5.
$15.79 + $32.81
$ _____

Answer:
$48.6

Explanation:
$15.79 + $32.81
Add hundredths 9 + 1 = 10; Regroup
Add tenths 7 + 8 + 1 = 16; Regroup
Add ones 5 + 2 + 1  = 8
Add hundreds 1 + 3 = 4
$15.79 + $32.81 = $48.60

Question 6.
38.44 − 25.86
_____

Answer:
12.58

Explanation:
38.44 − 25.86
Subtract hundredths: 4 – 6;
There are not enough hundredths. So, regroup
14 – 6 = 8
Subtract tenths: 3 – 8;
There are not enough tenths. So, regroup
13 – 8 = 5
Subtract ones: 7 – 5 = 2;
Subtract hundreds: 3 – 2 = 1;
So, 38.44 − 25.86 = 12.58

On Your Own – Page No. 157

Find the sum or difference.

Question 7.
$ 18.39
+$7.56
————
$ _____

Answer:
$25.95

Explanation:
$ 18.39 + $7.56
Add hundredths 9 + 6 = 15; Regroup
Add tenths 5 + 3 + 1 = 9;
Add ones 8 + 7  = 15; Regroup
Add hundreds 1 + 0 + 1 = 2
$ 18.39 + $7.56 = $25.95

Question 8.
8.22 − 4.39
_____

Answer:

Explanation:
8.22 − 4.39
Subtract hundredths: 2 – 9;
There are not enough hundredths. So, regroup
12 – 9 = 3
Subtract tenths: 1 – 3;
There are not enough tenths. So, regroup
11 – 3 = 8
Subtract ones: 7 – 4 = 3;
So, 8.22 − 4.39 = 3.83

Question 9.
93.6 − 79.84
_____

Answer:
13.76

Explanation:
93.6 − 79.84
Subtract hundredths: 0 – 4;
There are not enough hundredths. So, regroup
10 – 4 = 6
Subtract tenths: 5 – 8;
There are not enough tenths. So, regroup
15 – 8 = 7
Subtract ones: 2 – 9;
There are not enough ones. So, regroup
12 – 9 = 3
Subtract hundreds: 8 – 7 = 1;
So, 93.6 − 79.84 = 13.76

Question 10.
1.82
2.28
+2.18
————
_____

Answer:
6.28

Explanation:
1.82 + 2.28 + 2.18
Add hundredths 2 + 8 + 8 = 18; Regroup
Add tenths 8 + 2 + 1 + 1 = 12;  Regroup
Add ones 1 + 2 + 2 + 1  = 6;
1.82 + 2.28 + 2.18 = 6.28

Practice: Copy and Solve Find the sum or difference.

Question 11.
6.3 + 2.98 + 7.7
_____

Answer:
16.98

Explanation:
6.3 + 2.98 + 7.7
Add hundredths 0 + 8 + 0 = 8;
Add tenths 3 + 9 + 7 = 19;  Regroup
Add ones 6 + 2 + 7 + 1  = 16;
6.3 + 2.98 + 7.7 = 16.98

Question 12.
27.96 − 16.2
_____

Answer:
11.76

Explanation:
27.96 − 16.2
Subtract hundredths: 6 – 0 = 6;
Subtract tenths: 9 – 2 = 7;
Subtract ones: 7 – 6 = 1;
Subtract hundreds: 2 – 1 = 1;
So, 27.96 − 16.2 = 11.76

Question 13.
12.63 + 15.04
_____

Answer:
27.67

Explanation:
12.63 + 15.04
Add hundredths 3 + 4 = 7;
Add tenths 6 + 0 = 6;
Add ones 2 + 5 = 7;
Add hundreds 1 + 1 = 2
12.63 + 15.04 = 27.67

Question 14.
9.24 − 2.68
_____

Answer:
6.56

Explanation:
9.24 − 2.68
Subtract hundredths: 4 – 8;
There are not enough hundredths. So, regroup
14 – 8 = 6
Subtract tenths: 1 – 6;
There are not enough tenths. So, regroup
11 – 6 = 5
Subtract ones: 8 – 2 = 6;
So, 9.24 − 2.68 = 6.56

Question 15.
$18 − $3.55
$ _____

Answer:
$14.45

Explanation:
$18 − $3.55
Subtract hundredths: 0 – 5;
There are not enough hundredths. So, regroup
10 – 5 = 5
Subtract tenths;
There are not enough tenths. So, regroup
9 – 5 = 4
Subtract ones: 7 – 3 = 4;
Subtract hundreds: 1 – 0 = 0
So, $18 − $3.55 = $14.45

Question 16.
9.73 − 2.52
_____

Answer:
7.21

Explanation:
9.73 − 2.52
Subtract hundredths: 3 – 2 = 1;
Subtract tenths; 7 – 5 = 2
Subtract ones: 9 – 2 = 7;
So, 9.73 − 2.52 = 7.21

Question 17.
$54.78 + $43.62
$ _____

Answer:
$98.4

Explanation:
$54.78 + $43.62
Add hundredths 8 + 2 = 10; Regroup
Add tenths 7 + 6 + 1 = 14;  Regroup
Add ones 4 + 3 + 1 = 8;
Add hundreds 5 + 4 = 9
$54.78 + $43.62 = $98.40

Question 18.
7.25 + 0.25 + 1.5
_____

Answer:
9

Explanation:
7.25 + 0.25 + 1.5
Add hundredths 5 + 5 + 0 = 10; Regroup
Add tenths 2 + 2 + 5 + 1 = 10;  Regroup
Add ones 7 + 0 + 1 + 1 = 9;
7.25 + 0.25 + 1.5 = 9.00

Use Reasoning Algebra Find the missing number.

Question 19.
n − 9.02 = 3.85
n = _____

Answer:
n = 12.87

Explanation:
n − 9.02 = 3.85
n = 3.85 + 9.02
n = 12.87

Question 20.
n + 31.53 = 62.4
n = _____

Answer:
n = 30.87

Explanation:
n + 31.53 = 62.4
n = 62.4 – 31.53 = 30.87
n = 30.87

Question 21.
9.2 + n + 8.4 = 20.8
n = _____

Answer:
n = 3.2

Explanation:
9.2 + n + 8.4 = 20.8
n + 17.6 = 20.8
n = 20.8 – 17.6
n = 3.2

Problem Solving Applications

Question 22.
Jake needs 7.58 meters of wood to complete a school project. He buys a 2.25-meter plank of wood and a 3.12-meter plank of wood. How many more meters of wood does Jake need to buy?
_____ meters

Answer:
2.21 meters

Explanation:
Jake needs 7.58 meters of wood to complete a school project. He buys a 2.25-meter plank of wood and a 3.12-meter plank of wood.
2.25 + 3.12 = 5.37
7.58 – 5.37 = 2.21

Question 23.
Lori needs a length of twine 8.5 meters long to mark a row in her garden. Andrew needs a length of twine 7.25 meters long for his row. They have one length of twine that measures 16.27 meters. After they each take the lengths they need, how much twine will be left?
_____ meters

Answer:
0.52 meters

Explanation:
Lori needs a length of twine 8.5 meters long to mark a row in her garden. Andrew needs a length of twine 7.25 meters long for his row. They have one length of twine that measures 16.27 meters.
8.5 + 7.25 = 15.75
16.27 – 15.75 = 0.52

Page No. 158

Use the table to solve 24–26.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals img 30

Question 24.
How much farther did the gold medal winner jump than the silver medal winner?
_____ meters

Answer:
0.1 meters

Explanation:
Gold medal = 8.34 meters
Silver medal = 8.24 meters.
8.34 – 8.24 = 0.10 meters
gold medal winner jump 0.1 meters than the silver medal winner

Question 25.
The fourth-place competitor’s jump measured 8.19 meters. If his jump had been 0.10 meter greater, what medal would he have received? Explain how you solved the problem.
_________

Answer:

Explanation:
The fourth-place competitor’s jump measured 8.19 meters. If his jump had been 0.10 meter greater
8.19 + 0.1 = 8.29
He may receive a silver medal. 8.29 is in between 8.24 and 8.34

Question 26.
In the 2004 Olympics, the gold medalist for the men’s long jump had a jump of 8.59 meters. How much farther did the 2004 gold medalist jump compared to the 2008 gold medalist?
_____ meters

Answer:
0.25 meters

Explanation:
In the 2004 Olympics, the gold medalist for the men’s long jump had a jump of 8.59 meters.
In 2008, 8.34 meters
8.59 – 8.34 = 0.25 meters

Question 27.
Alexander and Holly are solving the following word problem.
At the supermarket Carla buys 2.25 pounds of hamburger. She also buys 3.85 pounds of chicken. How many pounds of hamburger and chicken did Carla buy?
Alexander set up his problem as 2.25 + 3.85.
Holly set up her problem as 3.85 + 2.25.
Who is correct? Explain your answer and solve the problem.

Answer:
Alexander and Holly are solving the following word problem.
At the supermarket, Carla buys 2.25 pounds of hamburger. She also buys 3.85 pounds of chicken. She buys 2.25 + 3.85 = 6.10 pounds.
From the commutative property, 2.25 + 3.85 = 3.85 + 2.25
So, both answers are correct

Chapter Review/Test – Page No. 159

Question 1.
Chaz kept a record of how many gallons of gas he purchased each day last week.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals Chapter Review/Test img 31
Order the days from least amount of gas Chaz purchased to greatest amount of gas Chaz purchased.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals Chapter Review/Test img 32
Least: _____ ; _____ ; _____ ; _____ ; _____ Greatest

Answer:
grade 5 chapter 3 Add and Subtract Decimals 153 image 3
Least: 3.75; 3.9; 4.256; 4.258; 4.5 Greatest

Explanation:
Monday = 4.5 gallons
Tuesday = 3.9 gallons
Wednesday = 4.258 gallons
Thursday = 3.75 gallons
Friday = 4.256 gallons
The days from least amount of gas Chaz purchased to the greatest amount of gas Chaz purchased
4.5; 3.9; 4.258; 3.75; 4.256
3 < 4
3.9; 3.75; 4.5; 4.258; 4.256
9 > 7. So, 3.9; 3.75
5 > 2; 4.5; 4.258; 4.256
8 > 6; 4.258; 4.256
4.5; 4.258; 4.256; 3.9; 3.75
3.75; 3.9; 4.256; 4.258; 4.5

For 2a–2c, select True or False for each statement

Question 2.
2a. 16.437 rounded to the nearest whole number is 16.
i. TRUE
ii. FALSE

Answer:
i. TRUE

Explanation:
16.437; 4 < 5.
So, the nearest whole number is 16

Question 2.
2b. 16.437 rounded to the nearest tenth is 16.4.
i. TRUE
ii. FALSE

Answer:
i. TRUE

Explanation:
16.437 rounded to the nearest tenth
3 < 5
16.4

Question 2.
2c. 16.437 rounded to the nearest hundredth is 16.43.
i. TRUE
ii. FALSE

Answer:
ii. FALSE

Explanation:
16.437 rounded to the nearest hundredth is
7 > 5
16.44

Question 3.
Students are selling muffins at a school bake sale. One muffin costs $0.25, 2 muffins cost $0.37, 3 muffins cost $0.49, and 4 muffins cost $0.61. If this pattern continues, how much will 7 muffins cost? Explain how you found your answer.
$ _____

Answer:
$0.97

Explanation:
Students are selling muffins at a school bake sale. One muffin costs $0.25, 2 muffins cost $0.37, 3 muffins cost $0.49, and 4 muffins cost $0.61.
0.37 – 0.25 = 0.12
0.49 – 0.37 = 0.12
0.61 – 0.49 = 0.12
For 5 muffins 0.61 + 0.12 = 0.73
For 6 muffins 0.73 + 0.12 = 0.85
For 7 muffins 0.85 + 0.12 = 0.97
Every muffin cost increases with 0.12.

Chapter Review/Test – Page No. 160

Question 4.
What is the value of the underlined digit? Mark all that apply. 0.679
Options:
a. 0.6
b. 0.06
c. six tenths
d. six hundredths
e. 6 × \(\frac{1}{10}\)

Answer:
a. 0.6
c. six tenths
e. 6 × \(\frac{1}{10}\)

Explanation:
0.679
(0 x 1) + (6 x \(\frac{1}{10}\)) + (7 x \(\frac{1}{100}\)) + (9 x \(\frac{1}{1000}\))
6 x \(\frac{1}{10}\) = 0.6 = 6 tenths

Question 5.
Rowanda jogged 2.14 kilometers farther than Terrance. Select the values that could represent how far each student jogged. Mark all that apply.
Options:
a. Rowanda: 6.5 km, Terrance: 4.36 km
b. Rowanda: 4.8 km, Terrance: 2.76 km
c. Rowanda: 3.51 km, Terrance: 5.65 km
d. Rowanda: 7.24 km, Terrance: 5.1 km

Answer:
a. Rowanda: 6.5 km, Terrance: 4.36 km
d. Rowanda: 7.24 km, Terrance: 5.1 km

Explanation:
Rowanda jogged 2.14 kilometers farther than Terrance.
a. Rowanda: 6.5 km, Terrance: 4.36 km
6.5 – 4.36 = 2.14
b. Rowanda: 4.8 km, Terrance: 2.76 km
4.8 – 2.76 = 2.04
c. Rowanda: 3.51 km, Terrance: 5.65 km
5.65 – 3.51 = 2.14
d. Rowanda: 7.24 km, Terrance: 5.1 km
7.24 – 5.1 = 2.14
The first and fourth values can represent how far each student jogged.

Question 6.
Shade the model to show the decimal 0.542.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals Chapter Review/Test img 33
Type below:
_________

Answer:
grade 5 chapter 3 Add and Subtract Decimals 160 image 1

Explanation:
0.542 = 542/1000
5 hundredths, 4 tenths, 2 thousandths

Question 7.
Benjamin rode his bicycle 3.6 miles on Saturday and 4.85 miles on Sunday. How many miles did he ride Saturday and Sunday combined?
Use the digits on the tiles to solve the problem. Digits may be used more than once or not at all.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals Chapter Review/Test img 34
_________ miles

Answer:
8.45 miles
grade 5 chapter 3 Add and Subtract Decimals 153 image 4

Explanation:
Benjamin rode his bicycle 3.6 miles on Saturday and 4.85 miles on Sunday.
3.6 + 4.85 = 8.45

Chapter Review/Test – Page No. 161

Question 8.
The school is 3.65 miles from Tonya’s house and 1.28 miles from Jamal’s house. How much farther from school is Tonya’s house than Jamal’s house? Explain how you can use a quick picture to solve the problem.
_____ miles

Answer:
grade 5 chapter 3 Add and Subtract Decimals 161 image 2
2.37 miles

Explanation:
The school is 3.65 miles from Tonya’s house and 1.28 miles from Jamal’s house.
3.65 – 1.28 = 2.37

Question 9.
A vet measured the mass of two birds. The mass of the robin was 76.64 grams. The mass of the blue jay was 81.54 grams. Estimate the difference in the masses of the birds.
≈ _____ grams

Answer:
5 grams

Explanation:
A vet measured the mass of two birds. The mass of the robin was 76.64 grams. The mass of the blue jay was 81.54 grams.
76.64 grams is closer to 77
81.54 grams is closer to 82
82 – 77 = 5
The estimated difference in the masses of the birds is 5 grams.

Question 10.
Rick bought 5 yogurt bars at a snack shop. Each yogurt bar cost $1.75. Complete the table to show the price of 2, 3, 4, and 5 yogurt bars.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals Chapter Review/Test img 35
Type below:
_________

Answer:
grade 5 chapter 3 Add and Subtract Decimals 161 image 1

Explanation:

Question 11.
Clayton Road is 2.25 miles long. Wood Pike Road is 1.8 miles long. Kisha used a quick picture to find the combined length of Clayton Road and Wood Pike Road. Does Kisha’s work make sense? Explain why or why not
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals Chapter Review/Test img 36
i. Yes
ii. No

Answer:
i. Yes

Explanation:
Clayton Road is 2.25 miles long. Wood Pike Road is 1.8 miles long.
2.25 + 1.8 = 4.05
4 tens, 0 tenths, 5 hundredths

Chapter Review/Test – Page No. 162

Question 12.
Bob and Ling are playing a number pattern game. Bob wrote the following sequence.
28.9, 26.8, 24.7, __, 20.5
What is the unknown term in the sequence?
_____

Answer:
26.8

Explanation:
Bob and Ling are playing a number pattern game. Bob wrote the following sequence.
28.9, 26.8, 24.7, __, 20.5
28.9 – 26.8 = 2.1
26.8 – 24.7 = 2.1
Every number is increased by 2.1
So, the unknown number is 24.7 + 2.1 = 26.8

Rafael bought 2.15 pounds of potato salad and 4.2 pounds of macaroni salad to bring to a picnic. For 13a–13c, select Yes or No to indicate whether each statement is true.

Question 13.
13a. Rounded to the nearest whole number, Rafael bought 2 pounds of potato salad.
i. Yes
ii. No

Answer:
i. Yes

Explanation:
2.15 pounds of potato salad
1 < 5 ;
So, Rounded to the nearest whole number is 2

Question 13.
13b. Rounded to the nearest whole number, Rafael bought 4 pounds of macaroni salad.
i. Yes
ii. No

Answer:
i. Yes

Explanation:
4.2 pounds of macaroni salad
2 < 5
So, Rounded to the nearest whole number is 4

Question 13.
13c. Rounded to the nearest tenth, Rafael bought 2.1 pounds of potato salad.
i. Yes
ii. No

Answer:
ii. No

Explanation:
2.15 pounds of potato salad
5 = 5 ;
So, Rounded to the nearest whole number is 2.2

Question 14.
The four highest scores on the floor exercise at a gymnastics meet were 9.675, 9.25, 9.325, and 9.5 points. Choose the numbers that make the statement true.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals Chapter Review/Test img 37
The lowest: _________
The highest: _________

Answer:
The lowest: 9.25
The highest: 9.75

Explanation:
Compare ones; All ones are the same.
Compare tenths; 9.75 has the highest number of tenths and 9.25 has the lowest number of tenths.
The lowest of these four scores was 9.25 points. The highest of these four scores was 9.75 points.

Chapter Review/Test – Page No. 163

Question 15.
Michelle records the value of one euro in U.S. dollars each day for her social studies project. The table shows the data she has recorded so far.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals Chapter Review/Test img 38
On which two days was the value of 1 euro the same when rounded to the nearest hundredth of a dollar?
Options:
a. Monday
b. Tuesday
c. Wednesday
d. Thursday

Answer:
a. Monday
c. Wednesday

Explanation:
Monday = 1.448
The digit in the hundredths place is 4. 8 > 5; So, the rounded number is 1.45
Tuesday = 1.443
The digit in the hundredths place is 4. 3 < 5; So, the rounded number is 1.44
Wednesday = 1.452
The digit in the hundredths place is 5. 2 < 5; So, the rounded number is 1.45
Thursday = 1.458
The digit in the hundredths place is 5. 8 > 5; So, the rounded number is 1.46

Question 16.
Miguel has $20. He spends $7.25 on a movie ticket, $3.95 for snacks, and $1.75 for bus fare each way. How much money does Miguel have left?
$ _____

Answer:
$7.05

Explanation:
Miguel has $20. He spends $7.25 on a movie ticket, $3.95 for snacks, and $1.75 for bus fare each way.
$7.25 + $3.95 + $1.75 = $12.95
$20 – $12.95 = $7.05

Question 17.
Yolanda’s sunflower plant was 64.34 centimeters tall in July. During August, the plant grew 18.2 centimeters.
Part A
Estimate the height of Yolanda’s plant at the end of August by rounding each value to the nearest whole number. Will your estimate be less than or greater than the actual height? Explain your reasoning.
_____ cm

Answer:
First, we want to round the number 64.34 to the nearest whole number.
1. We have to round this number to the molest tenth. To round the number to the nearest tenth we need to look at the digit in the hundredths place. So, as 4 < 5, the rounded number is 64.3.
2. We now have to round this number to the nearest one. lb round the number to the nearest one we need to look at the digit in the tenths place. So, as 3 < 5, the rounded number is 64.
Now, we have to round the number 18.2 to the nearest whole number.
1. We have to round this number to the nearest one. To round the number to the nearest one we need to look at the digit in the tenths place. So, as 2 <5, the rounded number is 18.
So, we now have to find the sum of these rounded values: 64 + 18 = 82. Therefore, the estimated height of Volanda’s plant at the and of August is: 82 centimeters.
The estimate is less than the actual height because rounded values are less than the actual values.

Question 17.
Part B
What was the exact height of the plant at the end of August? Was the estimate less than or greater than the exact value?
_____ cm

Answer:
The exact height of the plant is: 64.34 + 18.2
Add the hundredths first.
4 hundre.dths + 0 hundredths = 4 hundredths
Add the tenths.
3 tenths + 2 tenths = 5 tenths Add the ones. Regroup as nee.ded
Add the tens.
6 tens + 1 ten + 1 regrouped ten = 8 tens.
Therefore, the exact height is 64.34+ 18.2 = 82.54.
The estimate is less than the actual height.

Chapter Review/Test – Page No. 164

Question 18.
Oscar ran the 100-yard dash in 12.41 seconds. Jesiah ran the 100-yard dash in 11.85 seconds. How many seconds faster was Jesiah’s time than Oscar’s time?
_____ second(s)

Answer:
0.56 seconds

Explanation:
Oscar ran the 100-yard dash in 12.41 seconds. Jesiah ran the 100-yard dash in 11.85 seconds.
12.41 – 11.85 = 0.56 seconds.
Jesiah’s time is 0.56 seconds faster than Oscar’s time.

Question 19.
Choose the value that makes the statement true.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals Chapter Review/Test img 39
Type below:
_________

Answer:
2 hundredths and 5 thousandths

Explanation:
1.025
(1 x 1) + (0 x \(\frac{1}{10}\)) + (2 x \(\frac{1}{100}\)) + (5 x \(\frac{1}{1000}\))
2 x \(\frac{1}{100}\) = 2 hundredths
5 x \(\frac{1}{1000}\) = 5 thousandths
In the number 1.025, the value of the digit 2 is 2 hundredths, and the value of the digit 5 is 5 thousandths.

Question 20.
Troy and Lazetta are solving the following word problem. Rosalie’s cat weights 9.8 pounds. Her dog weighs 25.4 pounds. What is the weight of both animals combined. Troy sets up his problem as 9.8 + 25.4. Lazetta sets up her problem as 25.4 + 9.8. Who is correct? Explain your answer and solve the problem.
_________

Answer:
Troy and Lazetta are solving the following word problem. Rosalie’s cat weighs 9.8 pounds. Her dog weighs 25.4 pounds.
9.8 + 25.4
Add tenths 8 + 4 = 12; regroup
Add ones 9 + 5 + 1 regrouped one = 15 ones; regroup
Add tens 0 + 2 + 1 regrouped ten = 3 tens.
35.2
Lazetta: 25.4 + 9.8 = 35.2
Therefore, the answer is 25.4 + 9.8 = 35.2
The weight of both animals combined is 35.2 pounds. So, both were right.

Question 21.
Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals Chapter Review/Test img 40
Type below:
_________

Answer:
0.084 and 8.4

Explanation:
0.84 is 10 times as much as
0.84 = 10S
S = 0.84/10 = 0.084
0.84 is 1/10 of
0.84 = 1/10 x S
S = 0.84 x 10 = 8.4
So, from the given answers, 0.84 is 10 times as much as 0.084 and 0.84 is 1/10 of 8.4

Conclusion:

Get the Go Math Grade 5 Answer Key Chapter 3 Add and Subtract Decimals PDF. Download Go Math Grade 5 Answer Key PDF for free. New ways of learning will make your life easier with the best practice. Quick learning and easy understanding will come with the Go Math Grade 5 Chapter 3 Solution Key. Refer to our Go math practice books and question banks for the fast way of learning. We developed the Go Math answer key to all levels of students. Every student can easily understand the math and love the math after practicing with the Go Math answer key.

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Lesson 1: Algebra • Multiplication Patterns with Decimals

Lesson 2: Investigate • Multiply Decimals and Whole Numbers

Lesson 3: Multiplication with Decimals and Whole Numbers

Lesson 4: Multiply Using Expanded Form

Lesson 5: Problem Solving • Multiply Money

Mid-Chapter Checkpoint

Lesson 6: Investigate • Decimal Multiplication

Lesson 7: Multiply Decimals

Lesson 8: Zeros in the Product

Review/Test

Share and Show – Page No. 165

Complete the pattern.

Question 1.
100 × 17.04 = 17.04
101 × 17.04 = 17.04
102 × 17.04 = 17.04
103 × 17.04 = 17.04
_____

Answer:
100 × 17.04 = 17.04
101 × 17.04 = 170.4
102 × 17.04 = 1,704
103 × 17.04 =17,040

Explanation:
As you multiply by increasing powers of 10, then the position of the decimal point moves towards the right side.
100 × 17.04 = 1 x 17.04 = 17.04
101 × 17.04 = 10 x 17.04 = 170.4
102 × 17.04 = 100 x 17.04 = 1,704
103 × 17.04 = 1000 x 17.04 = 17,040

Complete the pattern.

Question 2.
1 × 3.19 = _____
10 × 3.19 = _____
100 × 3.19 = _____
1,000 × 3.19 = _____

Answer:
1 × 3.19 = 3.19
10 × 3.19 = 31.9
100 × 3.19 = 319
1,000 × 3.19 = 3,190
As you multiply by increasing powers of 10, then the position of the decimal point moves towards the right side.

Go Math 5th Grade 4.1 Answer Key Question 3.
45.6 × 100 = _____
45.6 × 101 = _____
45.6 × 102 = _____
45.6 × 103 = _____

Answer:
45.6 × 100 = 45.6
45.6 × 101 = 456
45.6 × 102 = 4,560
45.6 × 103 = 45,600

Explanation:
As you multiply by increasing powers of 10, then the position of the decimal point moves towards the right side.
45.6 × 100 = 45.6 x 1 = 45.6
45.6 × 101 = 45.6 x 10 = 456
45.6 × 102 = 45.6 x 100 = 4,560
45.6 × 103 = 45.6 x 1000 = 45,600

Question 4.
1 × 6,391 = _____
0.1 × 6,391 = _____
0.01 × 6,391 = _____

Answer:
1 × 6,391 = 6,391
0.1 × 6,391 = 639.1
0.01 × 6,391 = 63.91
As you multiply by decreasing powers of 10, the position of the decimal point moves towards the left side

On Your Own

Complete the pattern.

Question 5.
1.06 × 1 = _____
1.06 × 10 = _____
1.06 × 100 = _____
1.06 × 1,000 = _____

Answer:
1.06 × 1 = 1.06
1.06 × 10 = 10.6
1.06 × 100 = 106
1.06 × 1,000 = 1,060
As you multiply by increasing powers of 10, then the position of the decimal point moves towards the right side.

Question 6.
1 × 90 = _____
0.1 × 90 = _____
0.01 × 90 = _____

Answer:
1 × 90 = 90
0.1 × 90 = 9.0 = 9
0.01 × 90 = 0.9

Explanation:
As you multiply by decreasing powers of 10, the position of the decimal point moves towards the left side
1 × 90 = 90
0.1 × 90 = 9.0
0.01 × 90 = 0.90

Question 7.
100 × $0.19 = $ _____
101 × $0.19 = $ _____
102 × $0.19 = $ _____
103 × $0.19 = $ _____

Answer:
100 × $0.19 = $ 0.19
101 × $0.19 = $ 1.9
102 × $0.19 = $ 19
103 × $0.19 = $ 190

Explanation:
As you multiply by increasing powers of 10, then the position of the decimal point moves towards the right side.
100 × $0.19 = $ 0.19
101 × $0.19 = $ 1.9
102 × $0.19 = $ 19
103 × $0.19 = $ 190

Go Math Lesson 4.1 5th Grade Question 8.
580 × 1 = _____
580 × 0.1 = _____
580 × 0.01 = _____

Answer:
580 × 1 = 580
580 × 0.1 = 58
580 × 0.01 = 5.8

Explanation:
As you multiply by increasing powers of 10, then the position of the decimal point moves towards the right side.
580 × 1 = 580
580 × 0.1 = 58.0 = 58
580 × 0.01 = 5.8

Question 9.
100 × 80.72 = _____
101 × 80.72 = _____
102 × 80.72 = _____
103 × 80.72 = _____

Answer:
100 × 80.72 = 80.72
101 × 80.72 = 807.2
102 × 80.72 = 8,072
103 × 80.72 = 80,720

Explanation:
As you multiply by decreasing powers of 10, the position of the decimal point moves towards the left side
100 × 80.72 = 80.72
101 × 80.72 = 807.2
102 × 80.72 = 8,072
103 × 80.72 = 80,720

Question 10.
1 × 7,230 = _____
0.1 × 7,230 = _____
0.01 × 7,230 = _____

Answer:
1 × 7,230 = 7,230
0.1 × 7,230 = 723
0.01 × 7,230 = 72.3

Explanation:
As you multiply by increasing powers of 10, then the position of the decimal point moves towards the right side.
1 × 7,230 = 7,230
0.1 × 7,230 = 723.0 = 723
0.01 × 7,230 = 72.3

Algebra Find the value

of n.

Question 11.
n × $3.25 = $325.00
n = _____

Answer:
n = 100

Explanation:
n × $3.25 = $325.00
n × $3.25 = $325.00
n x $325 x $0.01 = $325.00
n x $325 x $1/100 = $325.00
n =  $325.00/$325 x 100
n = 1 x 100 = 100

Question 12.
0.1 × n = 89.5
n = _____

Answer:
n = 895

Explanation:
0.1 × n = 89.5
1/10 x n = 895 x 0.1
n = 895 x 0.1 x 10
n = 895

Go Math Grade 5 Chapter 4 Lesson 4.3 Answer Key Question 13.
103 × n = 630
n = _____

Answer:
n = 0.63

Explanation:
103 × n = 630
1000 x n = 630
n = 630 x 1/1000
n = 630 x 0.001
n = 0.63

Problem Solving – Page No. 166

What’s the Error?

Question 14.
Kirsten is making lanyards for a convention. She needs to make 1,000 lanyards and knows that 1 lanyard uses 1.75 feet of cord. How much cord will Kirsten need?
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 1
Kirsten’s work is shown below.
1 × 1.75 = 1.75
10 × 1.75 = 10.75
100 × 1.75 = 100.75
1,000 × 1.75 = 1,000.75

Find and describe Kirsten’s error. Solve the problem using the correct pattern.
As you can see from the given pattern, by multiplying 1.75 by different multiplicands, she just replaced the whole number, the number before the decimal point (in our use number 1), with belonging.
But this is not the way we multiply decimal numbers with different powers of number 10.
1 x 1.75= 1.75
10 x 1.75= 17.5
100 x 1.75= 175
1,000 x 1.75= 1,750

So, Kirsten needs ______ feet of cord to make 1,000 lanyards.
Describe how Kirsten could have solved the problem without writing out the pattern needed.
Type below:
________

Answer:
Kirsten needs 1,750 feet of cord to make 1,000 lanyards.
that decimal point moves one Noce M to the right for each increasing power of 10. So, the answer is 1,750 feet.

Share and Show – Page No. 167

Use the decimal model to find the product.

Question 1.
5 × 0.06 =
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 2
_____

Answer:
5 × 0.06 = 0.3
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 2

Explanation:
The picture shows that 5 groups of 6 hundredths.
0.06 = 6 hundredths
Each square box shows 1/ 100.
So, shade 6 boxes 5 times to get the product.
Count the number of boxes shaded. There are 30 hundredths are shaded = 0.30 = 0.3
5 × 0.06 = 0.3

Question 2.
2 × 0.38 =
_____

Answer:
2 × 0.38 = 0.76
grade 5 chapter 4 Multiply Decimals 167 image 1

Explanation:
The picture shows 2 groups of 38 hundredths.
0.38 = 38 hundredths
Each square box shows 1/ 100.
So, shade 38 boxes 2 times to get the product. 38 hundredths + 38 hundredths = 76 hundredths = 0.76.

Chapter 4 Extra Practice Lesson 4.2 Answer Key Question 3.
4 × 0.24 =
_____

Answer:
4 × 0.24 = 0.96
grade 5 chapter 4 Multiply Decimals 167 image 2

Explanation:
4 groups of 24 hundredths
Each square box shows 1/ 100.
So, shade 24 boxes 4 times to get the product. 24 hundredths + 24 hundredths + 24 hundredths + 24 hundredths = 96 hundredths = 0.96.

Find the product. Draw a quick picture.

Question 4.
4 × 0.6 =
_____

Answer:
4 × 0.6 = 2.4
grade 5 chapter 4 Multiply Decimals 168 image 1

Explanation:
4 × 0.6
4 groups of 6-tenths
0.6 + 0.6 + 0.6 + 0.6 = 2.4
4 × 0.6 = 2.4

Question 5.
2 × 0.67 =
_____

Answer:
2 × 0.67 = 1.34
grade 5 chapter 4 Multiply Decimals 168 image 2

Explanation:
2 × 0.67
2 groups of 67 hundredths
0.67 + 0.67 = 1.34
2 × 0.67 = 1.34

Question 6.
3 × 0.62 =
_____

Answer:
3 × 0.62 = 1.86
grade 5 chapter 4 Multiply Decimals 168 image 3

Explanation:
3 × 0.62
3 groups of 62 hundredths
0.62 + 0.62 + 0.62 = 1.86
3 × 0.62 = 1.86

Question 7.
4 × 0.32 =
_____

Answer:
4 × 0.32 = 1.28
grade 5 chapter 4 Multiply Decimals 168 image 4

Explanation:
4 × 0.32
4 groups of 32 hundredths
0.32 + 0.32 + 0.32 + 0.32 = 1.28
4 × 0.32 = 1.28

Go Math Grade 5 Chapter 4 Review/Test Answer Key Question 8.
Describe how you solved Exercise 7 using place value and renaming.
Type below:
________

Answer:
4 × 0.32
4 groups of 32 hundredths
There are 32 hundredths.
32 hundredths there are 30 tenths and 2 hundredths.
Combine the tenths and rename.
2 + 2 + 2 + 2 = 8
Combine the tenths and rename.
There are 3-tenths.
3 + 3 + 3 + 3 = 12; 2 tenths and 1 tens
Cross out the tenths you renamed.
Combine the ones and rename them.
0 + 0 + 0 + 0 + 1 = 1
1.28
4 × 0.32 = 1.28

Problem Solving – Page No. 168

Use the table for 9–11.
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 3

Question 9.
Each day a bobcat drinks about 3 times as much water as a Canada goose drinks. How much water can a bobcat drink in one day?
_____ liter

Answer:
0.72 liters

Explanation:
Each day a bobcat drinks about 3 times as much water as a Canada goose drinks.
Canada goose = 0.24 liters
bobcat drinks = 3 x 0.24
3 x 0.24 = 0.72 liters

Question 10.
River otters drink about 5 times as much water as a bald eagle drinks in a day. How much water can a river otter drink in one day?
_____ liter

Answer:
0.8 liter

Explanation:
River otters drink about 5 times as much water as a bald eagle drink in a day.
Bald Eagle drinks 0.16 liters
5 times as 0.16 liters = 5 x 0.16 = 0.8 liter

Question 11.
Explain how you could use a quick picture to find the amount of water that a cat drinks in 5 days.
Type below:
________

Answer:
grade 5 chapter 4 Multiply Decimals 168 image 5

Explanation:
Cat drinks 0.15 liters of water in a day.
In 5 days, 5 x 0.15 = 0.75

Chapter 4 Review Test 5th Grade Answer Key Question 12.
Test Prep Jared has a parakeet that weighs 1.44 ounces. Susie has a Senegal parrot that weighs 3 times as much as Jared’s parakeet. How many ounces does Susie’s parrot weigh?
Options:
a. 0.32 ounce
b. 0.43 ounce
c. 4.32 ounces
d. 43.2 ounces

Answer:
c. 4.32 ounces

Explanation:
Jared has a parakeet that weighs 1.44 ounces. Susie has a Senegal parrot that weighs 3 times as much as Jared’s parakeet.
Susie’s parrot weigh 3 x 1.44 ounces = 4.32 ounces

Share and Show – Page No. 171

Place the decimal point in the product.

Question 1.
6.81
×   7
———-
4767
Think: The place value of the decimal factor is a hundredths.

Answer:
6.81 x 7 = 47.67

Explanation:
6.81 x 7 = 7 x 6.81
7 x (6 + 0.81) = (7 x 6) + (7 x 0.81) = 42 + 5.67 = 47.67

Question 2.
3.7
× 2
———-
74
_____

Answer:
7.4

Explanation:
3.7 x 2
3.7 x 10 = 37
37 x 2 = 74
37 x 0.1 = 3.7
74 x 0.1 = 7.4

Go Math 5th Grade 4.3 Answer Key Question 3.
19.34
×    5
———-
9670
_____

Answer:
96.7

Explanation:
19.34 x 100 = 1934
1934 x 5 = 9670
1934 x 0.01 = 19.34
9670 x 0.01 = 96.7

Find the product.

Question 4.
6.32
×  3
———-
_____

Answer:
18.96

Explanation:
6.32 x 100 = 632
632 x 3 = 1896
632 x 0.01 = 6.32
1896 x 0.01 = 18.96

Question 5.
4.5
× 8
———-
_____

Answer:
36

Explanation:
4.5 x 10 = 45
45 x 8 = 360
45 x 0.1 = 4.5
360 x 0.1 = 36.0

Question 6.
40.7
×  5
———-
_____

Answer:
203.5

Explanation:
40.7 x 10 = 407
407 x 5 = 2035
407 x 0.1 = 40.7
2035 x 0.1 = 203.5

On Your Own

Find the product.

Question 7.
4.93
×   7
———-
_____

Answer:
34.51

Explanation:
7 x 3 = 21 hundredths; 2 tenths and 1 hundredths
7 x 9 = 63 tenths; 63 + 2 tenths = 65 tenths; 6 ones and 5 tenths
4 x 7 = 28; 28 + 6 = 34 ones;
34.51

Question 8.
8.2
× 6
———-
_____

Answer:
49.2

Explanation:
6 x 2 = 12 tenths; 1 ones and 2 tenths
6 x 8 = 48; 48 + 1 = 49 ones
49.2

Go Math 5th Grade Lesson 4.3 Homework Answers Question 9.
0.49
×   4
———-
_____

Answer:
1.96

Explanation:
9 x 4 = 36 hundredths; 3 tenths and 6 hundredths
4 x 4 = 16 tenths; 16 + 3 tenths = 19 tenths; 1 ones and 9 tenths
4 x 0 = 0; 0 + 1 = 1ones;
1.96

Question 10.
9.08
×   9
———-
_____

Answer:
81.72

Explanation:
9 x 8 = 72 hundredths; 7 tenths and 2 hundredths
9 x 0 = 0 tenths; 0 + 7 tenths = 7 tenths; 7 tenths
9 x 9 = 81; 81
81.72

Question 11.
7.55
×  8
———-
_____

Answer:
60.4

Explanation:
8 x 5 = 40 hundredths; 4 tenths and 0 hundredths
8 x 5 = 40 tenths; 40 + 4 tenths = 44 tenths; 4 ones and 4 tenths
8 x 7 = 56 ones; 56 + 4 = 60 ones
60.40 = 60.4

Question 12.
15.37
×    5
———-
_____

Answer:
76.85

Explanation:
5 x 7 = 35 hundredths; 3 tenths and 5 hundredths
5 x 3 = 15 tenths; 15 + 3 tenths = 18 tenths; 1 ones and 8 tenths
5 x 5 = 25 ones; 25 + 1 = 26 ones; 2 hundreds and 6 ones
5 x 1 = 5 hundreds; 5 + 2 = 7 hundreds
76.85

Practice: Copy and Solve Find the product.

Question 13.
8 × 7.2 = _____

Answer:
8 × 7.2 = 57.6

Explanation:
8 × 7.2 = 8 x (7 + 0.2) = (8 x 7) + (8 x 0.2) = 56 + 1.6 = 57.6

Question 14.
3 × 1.45 = _____

Answer:
3 × 1.45 = 4.35

Explanation:
3 x 1.45 = 3 x (1 + 0.45) = (3 x 1) + (3 x 0.45) = 3 + 1.35 = 4.35

Question 15.
9 × 8.6 = _____

Answer:
9 × 8.6 = 77.4

Explanation:
9 × 8.6 = 9 x (8 + 0.6) = (9 x 8) + (9 x 0.6) = 72 + 5.4 = 77.4

Question 16.
6 × 0.79 = _____

Answer:
6 × 0.79 = 4.74

Explanation:
6 x 0.79 = 4.74

Question 17.
4 × 9.3 = _____

Answer:
4 × 9.3 = 37.2

Explanation:
4 × 9.3 = 4 x (9 + 0.3) = (4 x 9) + (4 x 0.3) = 36 + 1.2 = 37.2

Go Math Grade 5 Chapter 4 Test Pdf Question 18.
7 × 0.81 = _____

Answer:
7 × 0.81 = 5.67

Explanation:
7 × 0.81 = 5.67

Question 19.
6 × 2.08 = _____

Answer:
6 × 2.08 = 12.48

Explanation:
6 × 2.08 = 6 x (2 + 0.08) = (6 x 2) + (6 x 0.08) = 12 + 0.48 = 12.48

Question 20.
5 × 23.66 = _____

Answer:
5 × 23.66 = 118.3

Explanation:
5 × 23.66 = 5 x (23 + 0.66) = (5 x 23) + (5 x 0.66) = 115 + 3.3 = 118.3

Problem Solving – Page No. 172

Use the table for 21–23.
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 4

Question 21.
Sari has a bag containing 6 half dollars. What is the weight of the half dollars in Sari’s bag?
_____ grams

Answer:
68.04 grams

Explanation:
Sari has a bag containing 6 half dollars.
Half dollars = 11.34 grams
6 x 11.34 = 68.04 grams
The weight of the half dollars in Sari’s bag is 68.04 grams.

Question 22.
Felicia is running a game booth at a carnival. One of the games requires participants to guess the weight, in grams, of a bag of 9 dimes. What is the actual weight of the dimes in the bag?
_____ grams

Answer:
20.43 grams

Explanation:
Felicia is running a game booth at a carnival. One of the games requires participants to guess the weight, in grams, of a bag of 9 dimes.
9 x 2.27 grams = 20.43 grams

Question 23.
Chance has $2 in quarters. Blake has $5 in dollar coins. Whose coins have the greatest weight? Explain.
_________

Answer:
Dollar coins has the greatest weight than quarters.

Explanation:
$2 means 4 quarters = 4 x 5.67 = 22.68
$5 in dollar coins = 5 x 8.1 = 40.5
Dollar coins has the greatest weight than quarters.

Question 24.
Julie multiplies 6.27 by 7 and claims the product is 438.9. Explain without multiplying how you know Julie’s answer is not correct. Find the correct answer.
Type below:
_________

Answer:
6.27 has two decimal digits
438.9 has one decimal digit
Therefore, Julie’s answer is not correct.
6.27 x 7 = 43.89

Question 25.
Test Prep Every day on his way to and from school, Milo walks a total of 3.65 miles. If he walks to school 5 days, how many miles will Milo have walked?
_____ miles

Answer:
18.25 miles

Explanation:
Milo walks a total of 3.65 miles.
If he walks to school 5 days, 5 x 3.65 = 18.25 miles

Share and Show – Page No. 175

Draw a model to find the product.

Question 1.
19 × 0.75 =
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 5
_____

Answer:
grade 5 chapter 4 Multiply Decimals 175 image 1
14.25

Explanation:
19 × 0.75
19 = 10 + 9
0.75 = 0.7 + 0.05
10 x 0.7 = 7
10 x 0.05 = 0.5
9 x 0.7 = 6.3
9 x 0.05 = 0.45
7 + 0.5 + 6.3 + 0.45 = 14.25
19 × 0.75 = 14.25

Go Math Grade 5 Lesson 4 Multiply Decimals by Decimals Question 2.
27 × 8.3 =
_____

Answer:
grade 5 chapter 4 Multiply Decimals 175 image 2
224.1

Explanation:
27 × 8.3 = 224.1
27 = 20 + 7
8.3 = 8 + 0.3
20 x 8 = 160
20 x 0.3 = 6
7 x 8 = 56
7 x 0.3 = 2.1
160 + 6 + 56 + 2.1 = 224.1

Find the product.

Question 3.
18 × 8.7 = _____

Answer:
18 × 8.7 = 156.6

Explanation:
8.7 x 10 = 87
18 x 87 = 1566
87 x 0.1 = 8.7
1566 x 0.1 = 156.6

Question 4.
23 × 56.1 = _____

Answer:
1290.3

Explanation:
56.1 x 10 = 561
561 x 23 = 12,903
561 x 0.1 = 56.1
12,903 x 0.1 = 1290.3

Question 5.
47 × 5.92 = _____

Answer:
278.24

Explanation:
5.92 x 100 = 592
592 x 47 = 27,824
592 x 0.01 = 5.92
27,824 x 0.01 = 278.24

On Your Own

Draw a model to find the product.

Question 6.
71 × 8.3 =
_____

Answer:
grade 5 chapter 4 Multiply Decimals 175 image 3
589.3

Explanation:
71 = 70 + 1
8.3 = 8 + 0.3
70 x 8 = 560
70 x 0.3 = 21
1 x 8 = 8
1 x 0.3 = 0.3
560 + 21 + 8 + 0.3 = 589.3

Question 7.
28 × 0.91 =
_____

Answer:
grade 5 chapter 4 Multiply Decimals 175 image 4
25.48

Explanation:
28 = 20 + 8
0.91 = 0.90 + 0.01
20 x 0.90 = 18
20 x 0.01 = 0.2
8 x 0.90 = 7.2
8 x 0.01 = 0.08
18 + 0.2 + 7.2 + 0.08 = 25.48

Find the product.

Question 8.
19 × 0.65 = _____

Answer:
19 × 0.65 = 12.35

Explanation:
0.65 x 100 = 65
65 x 19 = 1235
65 x 0.01 = 0.65
1235 x 0.01 = 12.35

Question 9.
34 × 98.3 = _____

Answer:
34 × 98.3 = 3342.2

Explanation:
98.3 x 10 = 983
983 x 34 = 33,422
983 x 0.1 = 98.3
33,422 x 0.1 = 3342.2

Lesson 4 Homework Practice Multiply Decimals by Decimals Answer Key Question 10.
26 × 16.28 = _____

Answer:
26 × 16.28 = 423.28

Explanation:
16.28 x 100 = 1628
1628 x 26 = 42,328
1628 x 0.01 = 16.28
42,328 x 0.01 = 423.28

UNLOCK the Problem – Page No. 176

Question 11.
While researching facts on the planet Earth, Kate learned that a true Earth day is about 23.93 hours long. How many hours are in 2 weeks on Earth?
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 6
a. What are you being asked to find?
Type below:
_________

Answer:
We need to find How many hours are in 2 weeks on Earth? 2 weeks x 23.93 hours per day?

Question 11.
b. What information do you need to know to solve the problem?
Type below:
_________

Answer:
Number of days in a week
Hours per day

Question 11.
c. Write an expression to represent the problem to be solved.
Type below:
_________

Answer:
2 weeks = 14 days
14 x 23.93 hours

Question 11.
d. Show the steps you used to solve the problem.
Type below:
_________

Answer:
335.02 hours

Explanation:
23.93 = 23.93 x 100 = 2393
2393 x 14 = 33,502
2393 x 0.01 = 23.93
33502 x 0.01 = 335.02

Question 11.
e. Complete the sentences.
On Earth, there are about _____ hours in a day, _____ days in 1 week, and _____ days in two weeks.
Since _____ × _____ = _____, there are about _____ hours in 2 weeks on Earth.
Type below:
_________

Answer:
On Earth, there are about 23.93 hours in a day,  7 days in 1 week, and 14 days in two weeks.
Since 23.93 × 14 = 335.02, there are about 335.02 hours in 2 weeks on Earth.

Question 12.
Michael’s favorite song is 3.19 minutes long. If he listens to the song 15 times on repeat, how long will he have listened to the same song?
_____ minutes

Answer:
47.85 minutes

Explanation:
Michael’s favorite song is 3.19 minutes long.
If he listens to the song 15 times, 15 x 3.19 = 47.85 minutes

Question 13.
Test Prep A car travels 56.7 miles in an hour. If it continues at the same speed, how far will the car travel in 12 hours?
Options:
a. 68.004 miles
b. 680.04 miles
c. 680.4 miles
d. 6,804 miles

Answer:
c. 680.4 miles

Explanation:
A car travels 56.7 miles in an hour.
In 12 hours, 12 x 56.7 = 680.4 hours

Share and Show – Page No. 179

Question 1.
Manuel collects $45.18 for a fundraiser. Gerome collects $18.07 more than Manuel. Cindy collects 2 times as much as Gerome. How much money does Cindy collect for the fundraiser?
First, draw a diagram to show the amount Manuel collects.
Then, draw a diagram to show the amount Gerome collects.
Next, draw a diagram to show the amount Cindy collects.
Finally, find the amount each person collects.
Cindy collects ______ for the fundraiser.
Type below:
_________

Answer:
Manuel collects $45.18 for a fundraiser. Gerome collects $18.07 more than Manuel. Cindy collects 2 times as much as Gerome.
grade 5 chapter 4 Multiply Decimals 179 image 1
Manuel: $45.18
Gerome: $45.18 + $18.07 = $63.25
Cindy: 2 x $63.25 = $126.5

Question 2.
What if Gerome collects $9.23 more than Manuel? If Cindy still collects 2 times as much as Gerome, how much money would Cindy collect?
Type below:
_________

Answer:
Gerome collects $9.23 more than Manuel
Manuel: $45.18
Gerome: $45.18 + $9.23 = $54.41
Cindy: 2 x $54.41 = $108.82

Question 3.
It costs $5.15 to rent a kayak for 1 hour at a local state park. The price per hour stays the same for up to 5 hours of rental. After 5 hours, the cost is decreased to $3.75 per hour. How much would it cost to rent a kayak for 6 hours?
$ ______

Answer:
$29.5

Explanation:
It costs $5.15 to rent a kayak for 1 hour at a local state park. The price per hour stays the same for up to 5 hours of rental. After 5 hours, the cost is decreased to $3.75 per hour.
For first 5 hours, $5.15
Next hour after 5 hours, it decreased to $3.75
For 6 hours, 5 x $5.15 + 1 x $3.75
5 x $5.15 = $25.75
1 x $3.75 = $3.75
$25.75 + $3.75 = $29.5

Go Math 5th Grade Lesson 5 Multiply Decimals Question 4.
Jenn buys a pair of jeans for $24.99. Her friend Karen spends $3.50 more for the same pair of jeans. Vicki paid the same price as Karen for the jeans but bought 2 pairs. How much did Vicki spend?
$ ______

Answer:
$56.98

Explanation:
Jenn buys a pair of jeans for $24.99.
Karen: $24.99 + $3.50 = $28.49
Vicky: 2 x $28.49 = $56.98

On Your Own – Page No. 180

Use the sign for 5–8.
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 7

Question 5.
Austin shops at Surfer Joe’s Surf Shop before going to the beach. He buys 2 T-shirts, a pair of board shorts, and a towel. If he gives the cashier $60, how much change will Austin get back?
$ ______

Answer:
$2.86

Explanation:
T-Shirt = $12.75
Board Shorts = $25.99
Sandals = $8.95
Towel = $5.65
Sunglasses = $15.50
Austin shops at Surfer Joe’s Surf Shop before going to the beach. He buys 2 T-shirts, a pair of board shorts, and a towel.
(2 x $12.75) + ($25.99) + $5.65 = $25.5 + $31.64 = $57.14
$60 – $57.14 = $2.86

Question 6.
Maria buys 3 T-shirts and 2 pairs of sandals at Surfer Joe’s Surf Shop. How much does Maria spend?
$ ______

Answer:
$56.15

Explanation:
Maria buys 3 T-shirts and 2 pairs of sandals at Surfer Joe’s Surf Shop.
3 x $12.75 = $38.25
2 x $8.95 = $17.9
$38.25 + $17.9 = $56.15

Question 7.
Nathan receives a coupon in the mail for $10 off of a purchase of $100 or more. If he buys 3 pairs of board shorts, 2 towels, and a pair of sunglasses, will he spend enough to use the coupon? How much will his purchase cost?
Type below:
_________

Answer:
$94.77

Explanation:
3 pairs of board shorts, 2 towels, and a pair of sunglasses
3 x $25.99 = $77.97
2 x $5.65 = $11.3
Sunglasses = $15.50
$77.97 + $11.3 + $15.50 = $104.77
$10 off of a purchase of $100 or more
$104.77 – $10 = $94.77

Go Math Grade 4 Chapter 4 Mid Chapter Checkpoint Answer Key Question 8.
Moya spends $33.90 on 3 different items. If she did not buy board shorts, which three items did Moya buy?
Type below:
_________

Answer:
T-Shirt, Towel, and Sunglasses

Explanation:
Moya spends $33.90 on 3 different items. If she did not buy board shorts,
T-Shirt = $12.75
Towel = $5.65
Sunglasses = $15.50

Question 9.
Test Prep At a donut shop in town, each donut costs $0.79. If Mr. Thomas buys a box of 8 donuts, how much will he pay for the donuts?
Options:
a. $6.32
b. $8.79
c. $63.20
d. $87.90

Answer:
a. $6.32

Explanation:
At a donut shop in town, each donut costs $0.79. If Mr. Thomas buys a box of 8 donuts, 8 x $0.79 = $6.32

Mid-Chapter Checkpoint – Page No. 181

Concepts and Skills

Question 1.
Explain how you can use a quick picture to find 3 × 2.7.
Type below:
________

Answer:
3 × 2.7 = 8.1;
As there are 8 ones and 1 tenth, we can draw eight square boxes and 1 line to represent 1 tenth.

Complete the pattern.

Question 2.
1 × 3.6 = _______
10 × 3.6 = _______
100 × 3.6 = _______
1000 × 3.6 = _______

Answer:
1 × 3.6 = 3.6
10 × 3.6 = 36
100 × 3.6 = 360
1000 × 3.6 = 3,600

Question 3.
100 × 17.55 = _______
101 × 17.55 = _______
102 × 17.55 = _______
103 × 17.55 = _______

Answer:
100 × 17.55 = 17.55
101 × 17.55 = 175.5
102 × 17.55 = 1755
103 × 17.55 = 17,550

Explanation:
100 × 17.55 = 1 x 17.55 = 17.55
101 × 17.55 = 10 x 17.55 = 175.5
102 × 17.55 = 100 x 17.55 = 1755
103 × 17.55 = 1000 x 17.55 = 17,550

Question 4.
1 × 29 = _______
0.1 × 29 = _______
0.01 × 29 = _______

Answer:
1 × 29 = 29
0.1 × 29 = 2.9
0.01 × 29 = 0.29

Find the product.

Question 5.
3.14
×   8
———–
_____

Answer:
25.12

Explanation:
8 x (3.14) = 8 x (3 + 0.14) = (8 x 3) + (8 x 0.14) = 24 + 1.12 = 25.12

Question 6.
17 × 0.67 = _____

Answer:
11.39

Explanation:
0.67 x 100 = 67
67 x 17 = 1139
67 x 0.01 = 0.67
1139 x 0.01 = 11.39

Question 7.
29 × 7.3 = _____

Answer:
211.7

Explanation:
29 × 7.3 = 29 x (7 + 0.3) = (29 x 7) + (29 x 0.3) = 203 + 8.7 = 211.7

Draw a diagram to solve.

Question 8.
Julie spends $5.62 at the store. Micah spends 5 times as much as Julie. Jeremy spends $6.72 more than Micah. How much money does each person spend?
Julie: $ _______
Micah: $ _______
Jeremy: $ _______

Answer:
grade 5 chapter 4 Multiply Decimals 181 image 1
Julie: $ 5.62
Micah spends 5 times as much as Julie = 5 x $5.62 = $28.1
Jeremy spends $6.72 more than Micah = $28.1 + $6.72 = $34.82

Mid-Chapter Checkpoint – Page No. 182

Question 9.
Sarah is cutting ribbons for a pep rally. The length of each ribbon needs to be 3.68 inches. If she needs 1,000 ribbons, what is the length of ribbon Sarah needs?
_____ inches

Answer:
3680 inches

Explanation:
Sarah is cutting ribbons for a pep rally. The length of each ribbon needs to be 3.68 inches.
If she needs 1,000 ribbons, 3.68 x 1,000 = 3680 inches

Question 10.
Adam is carrying books to the classroom for his teacher. Each book weighs 3.85 pounds. If he carries 4 books, how many pounds is Adam carrying?
_____ pounds

Answer:
15.4 pounds

Explanation:
Adam is carrying books to the classroom for his teacher. Each book weighs 3.85 pounds. If he carries 4 books, 4 x 3.85 = 15.4 pounds.

Question 11.
A car travels 54.9 miles in an hour. If the car continues at the same speed for 12 hours, how many miles will it travel?
_____ miles

Answer:
658.8 miles

Explanation:
A car travels 54.9 miles in an hour. If the car continues at the same speed for 12 hours, 12 x 54.9 = 658.8 miles

Question 12.
Charlie saves $21.45 each month for 6 months. In the seventh month, he only saved $10.60. How much money will Charlie have saved after 7 months?
$ __________

Answer:
$139.3

Explanation:
Charlie saves $21.45 each month for 6 months. In the seventh month, he only saved $10.60.
6 x $21.45 + $10.60 = $128.7 + $10.60 = $139.3

Share and Show – Page No. 185

Multiply. Use the decimal model.

Question 1.
0.8 × 0.4 =
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 8

Answer:
0.8 × 0.4 = 0.32
grade 5 chapter 4 Multiply Decimals 183 image 1

Explanation:
The shaded and crossed parts represent the product.
32 hundredths = 0.32

Question 2.
0.1 × 0.7 =
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 9
_____

Answer:
grade 5 chapter 4 Multiply Decimals 183 image 2
0.1 × 0.7 = 0.7

Explanation:
Count the number of overlapped boxes to find the product. 7 tenths = 0.7

Chapter 4 Go Math 5th Grade Lesson 4.6 Answer Key Question 3.
0.4 × 1.6 =
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 10
_____

Answer:
0.4 × 1.6 = 0.64
grade 5 chapter 4 Multiply Decimals 185 image 1

Explanation:
Count the red line crossed boxes to get the product.
4 x 16 = 64
0.1 x 0.1 = 0.01
64 x 0.01 = 0.64

Question 4.
0.3 × 0.4 =
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 11
_____

Answer:
0.3 × 0.4 = 0.12
grade 5 chapter 4 Multiply Decimals 190 image 2

Explanation:
3 x 4 = 12
0.1 x 0.1 = 0.01
12 x 0.01 = 0.12

Question 5.
0.9 × 0.6 =
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 12
_____

Answer:
0.9 x 0.6 = 0.54
grade 5 chapter 4 Multiply Decimals 190 image 4

Explanation:
9 x 6 = 54
0.1 x 0.1 = 0.01
54 x 0.01 = 0.54

Question 6.
0.5 × 1.2 =
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 13
_____

Answer:
0.5 × 1.2 = 0.60
grade 5 chapter 4 Multiply Decimals 185 image 2

Explanation:
Count the red line crossed boxes to get the product.
5 x 12 = 60
0.1 x 0.1 = 0.01
60 x 0.01 = 0.60

Question 7.
0.8 × 0.9 =
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 14
_____

Answer:
0.8 × 0.9 = 0.72
grade 5 chapter 4 Multiply Decimals 190 image 3

Explanation:
8 x 9 = 72
0.1 x 0.1 = 0.01
72 x 0.01 = 0.72

Question 8.
0.5 × 0.3 =
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 15
_____

Answer:
0.5 × 0.3 = 0.15
grade 5 chapter 4 Multiply Decimals 190 image 1

Explanation:
5 x 3 = 15
0.1 x 0.1 = 0.01
15 x 0.01 = 0.15

Question 9.
0.5 × 1.5 =
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 16
_____

Answer:
0.5 × 1.5 = 0.75
grade 5 chapter 4 Multiply Decimals 185 image 3

Explanation:
Count the red line crossed boxes to get the product.
5 x 15 = 75
0.1 x 0.1 = 0.01
75 x 0.01 = 0.75

Go Math Lesson 4.6 Answer Key 5th Grade Question 10.
Explain why when you multiply and find one-tenth of one-tenth, it is equal to one hundredth.
Type below:
_________

Answer:
When you do one-tenth of one-tenth, it is one-tenth over 10 —-> (1/10) /10
So, you can consider it as (1/10) / (10/1). This is only for simplicity.
Now, you have to multiply the denominator of the fraction in the numerator with the numerator of the fraction in the denominator i.e., 10 with 10 and this comes in the denominator only.
and numerator of the fraction in the numerator with the denominator of the fraction in the denominator i.e., 1 with 1.
So, you get, (1*1) / (10*10) = 1/100
This is again the 10th part of one-tenth OR 100th part of 1 = one hundredth

Problem Solving – Page No. 186

Sense or Nonsense?

Question 11.
Randy and Stacy used models to find 0.3 of 0.5. Both Randy’s and Stacy’s models are shown below. Whose model makes sense? Whose model is nonsense? Explain your reasoning below each model. Then record the correct answer.
Randy’s Model
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 17

Stacy’s Model
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 18
0.3 × 0.5 =
• For the answer that is nonsense, describe the error the student made.
_________ model is correct

Answer:
Randy’s Model is correct. Stacy’s Model makes nonsense.
Because Stacy’s Model is showing 0.10 x 0.8 which is not equal to 0.3 x 0.5

Explanation:
Randy and Stacy used models to find 0.3 of 0.5
0.3 x 0.5 = 0.15

Share and Show – Page No. 188

Place the decimal point in the product.

Question 1.
3.62
× 1.4
———-

5068
Think: A hundredth is being multiplied by a tenth. Use the pattern 0.01 × 0.1.
___

Answer:
5.068

Explanation:
3.62 x 100 = 362 = 362 x 0.01
1.4 x 10 = 14 = 14 x 0.1
362 x 14 = 5068
0.01 x 0.1 = 0.001
5068 x 0.001 = 5.068

Question 2.
6.8
×1.2
———-
816
_____

Answer:
8.16

Explanation:
6.8 x 10 = 68 = 68 x 0.1
1.2 x 10 = 12 = 12 x 0.1
68 x 12 = 816
0.1 x 0.1 = 0.01
816 x 0.01 = 8.16

Find the product.

Question 3.
0.9
× 0.8
———-
_____

Answer:
0.72

Explanation:
0.9 x 10 = 9 = 9 x 0.1
0.8 x 10 = 8 = 8 x 0.1
9 x 8 = 72
0.1 x 0.1 = 0.01
72 x 0.01 = 0.72

Question 4.
84.5
×  5.5
———-
_____

Answer:
464.75

Explanation:
84.5 x 10 = 845 = 845 x 0.1
5.5 x 10 = 55 = 55 x 0.1
845 x 55 = 46475
0.1 x 0.1 = 0.01
46475 x 0.01 = 464.75

Lesson 4.7 Answer Key Chapter 4 Go Math 5th Grade Question 5.
2.39
×2.7
———-
_____

Answer:
6.453

Explanation:
2.39 x 100 = 239 = 239 x 0.01
2.7 x 10 = 27 = 27 x 0.1
239 x 27 = 6453
0.01 x 0.1 = 0.001
6453 x 0.001 = 6.453

On Your Own – Page No. 189

Find the product.

Question 6.
7.9
× 3.4
———-
_____

Answer:
26.86

Explanation:
7.9 x 10 = 79 = 79 x 0.1
3.4 x 10 = 34 = 34 x 0.1
79 x 34 = 2686
0.1 x 0.1 = 0.01
2686 x 0.01 = 26.86

Question 7.
9.2
×5.6
———-
_____

Answer:
51.52

Explanation:
9.2 x 10 = 92 = 92 x 0.1
5.6 x 10 = 56 = 56 x 0.1
92 x 56 = 5152
0.1 x 0.1 = 0.01
5152 x 0.01 = 51.52

Question 8.
3.45
× 9.7
———-
_____

Answer:
33.465

Explanation:
3.45 x 100 = 345 = 345 x 0.01
9.7 x 10 = 97 = 97 x 0.1
345 x 97 = 33465
0.01 x 0.1 = 0.001
33465 x 0.001 = 33.465

Question 9.
45.3
× 0.8
———-
_____

Answer:
36.24

Explanation:
45.3 x 10 = 453 = 453 x 0.1
0.8 x 10 = 8 = 8 x 0.1
453 x 8 = 3624
0.1 x 0.1 = 0.01
3624 x 0.01 = 36.24

Question 10.
6.98
× 2.5
———-
_____

Answer:
17.450

Explanation:
6.98 x 100 = 698 = 698 x 0.01
2.5 x 10 = 25 = 25 x 0.1
698 x 25 = 17,450
0.01 x 0.1 = 0.001
17450 x 0.001 = 17.450

Question 11.
7.02
×3.4
———-
_____

Answer:
23.868

Explanation:
7.02 x 100 = 702 = 702 x 0.01
3.4 x 10 = 34 = 34 x 0.1
702 x 34 = 23868
0.01 x 0.1 = 0.001
23868 x 0.001 = 23.868

Question 12.
14.9
×0.35
———-
_____

Answer:
5.215

Explanation:
14.9 x 10 = 149 = 149 x 0.1
0.35 x 100 = 35 = 35 x 0.01
149 x 35 = 5215
0.1 x 0.01 = 0.001
5215 x 0.001 = 5.215

Question 13.
50.99
×  3.7
———-
_____

Answer:
188.663

Explanation:
50.99 x 100 = 5099 = 5099 x 0.01
3.7 x 10 = 37 = 37 x 0.1
5099 x 37 = 188663
0.01 x 0.1 = 0.001
188663 x 0.001 = 188.663

Question 14.
18.43
×  1.9
———-
_____

Answer:
35.017

Explanation:
18.43 x 100 = 1843 = 1843 x 0.01
1.9 x 10 = 19 = 19 x 0.1
1843 x 19 = 35017
0.01 x 0.1 = 0.001
35017 x 0.001 = 35.017

Practice: Copy and Solve Find the product.

Question 15.
3.4 × 5.2 = _____

Answer:
17.68

Explanation:
3.4 × 5.2
34 x 52 = 1768
0.1 x 0.1 = 0.01
1768 x 0.01 = 17.68

Question 16.
0.9 × 2.46 = _____

Answer:
2.214

Explanation:
9 x 246 = 2214
0.1 x 0.01 = 0.001
2214 x 0.001 = 2.214

Question 17.
9.1 × 5.7 = ____

Answer:
51.87

Explanation:
91 x 57 = 5187
0.1 x 0.1 = 0.01
5187 x 0.01 = 51.87

Question 18.
4.8 × 6.01 = _____

Answer:
28.848

Explanation:
48 x 601 = 28848
0.1 x 0.01 = 0.001
28848 x 0.001 = 28.848

Question 20.
7.6 × 18.7 = _____

Answer:
142.12

Explanation:
76 x 187 = 14212
0.1 x 0.1 = 0.01
14212 x 0.01 = 142.12

Question 21.
0.77 × 14.9 = _____

Answer:
114.73

Explanation:
77 x 149 = 11473
0.01 x 0.1 = 0.01
11473 x 0.01 = 114.73

Question 22.
3.3 × 58.14 = _____

Answer:
191.862

Explanation:
33 x 5814 = 191862
0.1 x 0.01 = 0.001
191862 x 0.001 = 191.862

Problem Solving – Page No. 190

Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 19

Question 23.
Charlie has an adult Netherlands dwarf rabbit that weighs 1.2 kilograms. Cliff’s adult Angora rabbit weighs 2.9 times as much as Charlie’s rabbit. How much does Cliff’s rabbit weigh?
_____ kilograms

Answer:
3.48 kilograms

Explanation:
Charlie has an adult Netherlands dwarf rabbit that weighs 1.2 kilograms. Cliff’s adult Angora rabbit weighs 2.9 times as much as Charlie’s rabbit.
1.2 x 2.9 = 3.48 kilograms

Question 24.
John has pet rabbits in an enclosure that has an area of 30.72 square feet. The enclosure Taylor is planning to build for his rabbits will be 2.2 times as large as John’s. What will be the area of the enclosure Taylor is planning to build?
_____ square feet

Answer:
67.584 square feet

Explanation:
John has pet rabbits in an enclosure that has an area of 30.72 square feet. The enclosure Taylor is planning to build for his rabbits will be 2.2 times as large as John’s.
30.72 x 2.2 = 67.584 square feet

Question 25.
A zoo is planning a new building for the penguin exhibit. First, they made a model that was 1.3 meters tall. Then, they made a more detailed model that was 1.5 times as tall as the first model. The building will be 2.5 times as tall as the height of the detailed model. What will be the height of the building?
_____ meters

Answer:
4.875 meters

Explanation:
A zoo is planning a new building for the penguin exhibit. First, they made a model that was 1.3 meters tall. Then, they made a more detailed model that was 1.5 times as tall as the first model.
1.3 x 1.5 = 1.95
The building will be 2.5 times as tall as the height of the detailed model.
2.5 x 1.95 = 4.875 meters

Question 26.
Leslie and Paul both solved the multiplication problem 5.5 x 4.6. Leslie says the answer is 25.30. Paul says the answer is 25.3. Whose answer is correct? Explain your reasoning.
Type below:
_________

Answer:
Both answers are correct. Because 25.30 = 25.3. The zeros have no value after the decimal point of a number.

Explanation:
5.5 x 4.6
55 x 46 = 2530
0.1 x 0.1 = 0.01
2530 x 0.01 = 25.30 = 25.3

Question 27.
Test Prep A vine in Mr. Jackson’s garden is 3.6 feet long. When it is measured again, it is 2.1 times as long. How long is the vine?
Options:
a. 5.7 feet
b. 6.6 feet
c. 7.5 feet
d. 7.56 feet

Answer:
a. 5.7 feet

Explanation:
A vine in Mr. Jackson’s garden is 3.6 feet long. When it is measured again, it is 2.1 times as long.
3.6 + 2.1 = 5.7 feet

Share and Show – Page No. 193

Write zeros in the product.

Question 1.
0.05
× 0.7
———-

Answer:

Explanation:

□35
Think: Hundredths are multiplied by tenths. What should be the place value of the product?
_____

Answer:
0.035

Explanation:
5 x 7 = 35
0.01 x 0.1 = 0.001
35 x 0.001 = 0.035

Question 2.
0.2
× 0.3
———-
_____

Answer:
0.06

Explanation:
2 x 3 = 6
0.1 x 0.1 = 0.01
6 x 0.01 = 0.06

Question 3.
0.02
× 0.2
———-
_____

Answer:
0.004

Explanation:
2 x 2 = 4
0.01 x 0.1 = 0.001
4 x 0.001 = 0.004

Find the product.

Question 4.
$0.05
× 0.8
———-
$ _____

Answer:
$0.04

Explanation:
5 x 8 = 40
0.01 x 0.1 = 0.001
40 x 0.001 = 0.040 = 0.04

Question 5.
0.09
× 0.7
———-
_____

Answer:
0.063

Explanation:
9 x 7 = 63
0.01 x 0.1 = 0.001
63 x 0.001 = 0.063

Question 6.
0.2
× 0.1
———-
_____

Answer:
0.02

Explanation:
2 x 1 = 2
0.1 x 0.1 = 0.01
2 x 0.01 = 0.02

On Your Own

Find the product.

Question 7.
0.3
× 0.3
———-
_____

Answer:
0.09

Explanation:
3 x 3 = 9
0.1 x 0.1 = 0.01
9 x 0.01 = 0.09

Question 8.
0.05
× 0.3
———-
_____

Answer:
0.015

Explanation:
5 x 3 = 15
0.01 x 0.1 = 0.001
15 x 0.001 = 0.015

Question 9.
0.02
× 0.4
———-
_____

Answer:
0.008

Explanation:
2 x 4 = 8
0.01 x 0.1 = 0.001
8 x 0.001 = 0.008

Question 10.
$0.40
× 0.1
———-
$ _____

Answer:
$0.04

Explanation:
40 x 1 = 40
0.10 x 0.1 = 0.010
40 x 0.010 = 0.04

Go Math Chapter 4 Test 5th Grade Answer Key Question 11.
0.09
× 0.2
———-
_____

Answer:
0.018

Explanation:
9 x 2 = 18
0.01 x 0.1 = 0.001
18 x 0.001 = 0.018

Question 12.
$ 0.05
× 0.6
———-
_____

Answer:
$0.3

Explanation:
5 x 6 = 30
0.01 x 0.1 = 0.001
30 x 0.001 = 0.30 = 0.3

Question 13.
0.04
× 0.5
———-
_____

Answer:
0.020

Explanation:
4 x 5 = 20
0.01 x 0.1 = 0.001
20 x 0.001 = 0.020

Question 14.
0.06
× 0.8
———-
_____

Answer:
0.048

Explanation:
6 x 8 = 48
0.01 x 0.1 = 0.001
48 x 0.001 = 0.048

Algebra Find the value of n.

Question 15.
0.03 × 0.6 = n
n = _____

Answer:
n = 0.018

Explanation:
0.03 × 0.6 = n
0.018 = n
n = 0.018

Question 16.
n × 0.2 = 0.08
n = _____

Answer:
n = 0.4

Explanation:
n × 0.2 = 0.08
n = 0.08/0.2
n = 0.4

Question 17.
0.09 × n = 0.063
n = _____

Answer:
n = 0.7

Explanation:
0.09 × n = 0.063
n = 0.063/0.09
n = 0.7

Page No. 194

Question 18.
On an average day, a garden snail can travel about 0.05 miles. If a snail travels 0.2 times as far as the average distance in a day, how far can it travel?
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals img 20
a. What are you being asked to find?
Type below:
_________

Answer:
We need to find how far a snail travels on 0.2 times as far as the average distance in a day.

Question 18.
b. What information will you use to solve the problem?
Type below:
_________

Answer:
On an average day, a garden snail can travel about 0.05 miles.
0.2 times as far as the average distance in a day

Question 18.
c. How will you use multiplication and place value to solve the problem?
Type below:
_________

Answer:
0.2 x 0.05

Question 18.
d. Show how you will solve the problem.
Type below:
_________

Answer:
2 x 5 = 10
0.1 x 0.01 = 0.001
10 x 0.001 = 0.010 = 0.01

Question 18.
e. Fill in the bubble for the correct answer choice above.
Options:
a. 0.7 mile
b. 0.25 mile
c. 0.1 mile
d. 0.01 mile

Answer:
d. 0.01 mile

Question 19.
In a science experiment, Tania uses 0.8 ounces of water to create a reaction. She wants the next reaction to be 0.1 times the size of the previous reaction. How much water should she use?
Options:
a. 0.08 ounce
b. 0.09 ounce
c. 0.8 ounce
d. 0.9 ounce

Answer:
a. 0.08 ounce

Explanation:
In a science experiment, Tania uses 0.8 ounces of water to create a reaction. She wants the next reaction to be 0.1 times the size of the previous reaction.
0.8 x 0.1 = 0.08 ounce

Question 20.
Michael multiplies 0.2 by a number. He records the product as 0.008. What number did Michael use?
Options:
a. 0.016
b. 0.04
c. 0.28
d. 0.4

Answer:
b. 0.04

Explanation:
Michael multiplies 0.2 by a number. He records the product as 0.008.
0.2 x n = 0.008
n = 0.008/0.2
n = 0.04
Michael use 0.04

Chapter Review/Test – Page No. 195

Check Concepts

Question 1.
Explain how estimation helps you to place the decimal point when multiplying 3.9 × 5.3.
Type below:
_________

Answer:
3.9 × 5.3
39 x 53 = 2067
0.1 x 0.1 = 0.01
2067 x 0.01 = 20.67

Complete the pattern.

Question 2.
1 × 7.45 = _______
10 × 7.45 = _______
100 × 7.45 = _______
1,000 × 7.45 = _______

Answer:
1 × 7.45 = 7.45
10 × 7.45 = 74.5
100 × 7.45 = 745
1,000 × 7.45 = 7,450

Question 3.
100 × 376.2 = _______
101 × 376.2 = _______
102 × 376.2 = _______
103 × 376.2 = _______

Answer:
100 × 376.2 = 376.2
101 × 376.2 = 3,762
102 × 376.2 = 37,620
103 × 376.2 = 376,200

Explanation:
100 × 376.2 = 1 x 376.2 = 376.2
101 × 376.2 = 10 x 376.2 = 3,762
102 × 376.2 = 100 x 376.2 =  37,620
103 × 376.2 = 1000 x 376.2 = 376,200

Question 4.
1 × 191 = _______
0.1 × 191 = _______
0.01 × 191 = _______

Answer:
1 × 191 = 191
0.1 × 191 = 19.1
0.01 × 191 = 1.91_

Find the product.

Question 5.
5 × 0.89 = _____

Answer:
4.45

Explanation:
5 × 0.89
5 x 9 = 45 hundredths; 4 tenths and 5 hundredths
5 x 8 = 40 tenths; 40 + 4 tenths = 44 tenths; 4 ones and 4 tenths
5 x 0 = 0; 0 + 4 = 4 ones
4.45

Question 6.
9 × 2.35 = _____

Answer:
21.15

Explanation:
9 × 2.35
9 x 5 = 45 hundredths; 4 tenths and 5 hundredths
9 x 3 = 27 tenths; 27 + 4 tenths = 31 tenths; 3 ones and 1 tenth
9 x 2 = 18; 18 + 3 = 21 ones
21.15

Question 7.
23 × 8.6 = _____

Answer:
197.8

Explanation:
23 x 8.6
23 x 6 = 138 tenths; 13 ones and 8 tenths
23 x 8 = 184 ones; 184 + 13 = 197 ones
197.8

Question 8.
7.3 × 0.6 = _____

Answer:
4.38

Explanation:
73 x 6 = 438
0.1 x 0.1 = 0.01
438 x 0.01 = 4.38

Question 9.
0.09 × 0.7 = _____

Answer:
0.063

Explanation:
9 x 7 = 63
0.01 x 0.1 = 0.001
63 x 0.001 = 0.063

Question 10.
0.8 × $0.40 = $ _____

Answer:
$0.32

Explanation:
8 x 4 = 32
0.1 x 0.1 = 0.01
32 x 0.01 = 0.32

Draw a diagram to solve.

Question 11.
In January, Dawn earns $9.25 allowance. She earns 3 times as much in February. If during March, she earns $5.75 more than she did in February, how much allowance does Dawn earn in March?
$ _________

Answer:
$33.5

Explanation:
In January, Dawn earns $9.25 allowance.
February: 3 x $9.25 = $27.75
March: $27.75 + $5.75 = $33.5

Chapter Review/Test – Page No. 196

Fill in the bubble completely to show your answer.

Question 12.
Janet hikes a trail at a local forest each day. The trail is 3.6 miles long, and she has hiked 5 days in the past week. How many miles has Janet hiked in the past week?
Options:
A. 18 miles
B. 15.3 miles
C. 11 miles
D. 8.6 miles

Answer:
A. 18 miles

Explanation:
Janet hikes a trail at a local forest each day. The trail is 3.6 miles long, and she has hiked 5 days in the past week.
3.6 x 5 = 18 miles

Question 13.
To earn money for his vacation, Grayson works at a local shop on weekends. His job is to cut bricks of fudge into 0.25 pound squares. If he cuts 36 equal-sized squares on Saturday, how many pounds of fudge has Grayson cut?
Options:
A. 7.25 pounds
B. 9 pounds
C. 90 pounds
D. 72.5 pounds

Answer:
B. 9 pounds

Explanation:
To earn money for his vacation, Grayson works at a local shop on weekends. His job is to cut bricks of fudge into 0.25 pound squares. If he cuts 36 equal-sized squares on Saturday,
0.25 x 36 = 9 pounds

Question 14.
James is making a scale model of his bedroom. The model is 0.6 feet wide. If the actual room is 17.5 times as wide as the model, what is the width of James’s room?
Options:
A. 18.1 feet
B. 17.11 feet
C. 16.9 feet
D. 10.5 feet

Answer:
D. 10.5 feet

Explanation:
James is making a scale model of his bedroom. The model is 0.6 feet wide. If the actual room is 17.5 times as wide as the model,
0.6 x 17.5 = 10.5 feet

Question 15.
The cost of admission to the matinee showing at a movie theater is $6.75. If 7 friends want to see the matinee showing of their favorite movie, how much will it cost?
Options:
A. $11.25
B. $14.75
C. $42.75
D. $47.25

Answer:
D. $47.25

Explanation:
The cost of admission to the matinee showing at a movie theater is $6.75. If 7 friends want to see the matinee showing of their favorite movie,
7 x $6.75 = $47.25

Chapter Review/Test – Page No. 197

Fill in the bubble completely to show your answer.

Question 16.
On Friday, Gail talked for 38.4 minutes on her cell phone. On Saturday, she uses 5.5 times as many minutes as she did on Friday. How long does Gail talk on her cell phone on Saturday?
Options:
A. 2.112 minutes
B. 21.12 minutes
C. 211.2 minutes
D. 2,112 minutes

Answer:
C. 211.2 minutes

Explanation:
On Friday, Gail talked for 38.4 minutes on her cell phone. On Saturday, she uses 5.5 times as many minutes as she did on Friday.
38.4 x 5.5 = 211.2 minutes

Question 17.
Harry walks to a produce market to buy bananas. If a pound of bananas costs $0.49, how much will Harry pay for 3 pounds of bananas?
Options:
A. $1.47
B. $3.49
C. $5.49
D. $10.47

Answer:
A. $1.47

Explanation:
Harry walks to a produce market to buy bananas. If a pound of bananas costs $0.49,
For 3 pound, 3 x $0.49 = $1.47

Question 18.
At Anne’s Fabric Emporium, a yard of chiffon fabric costs $7.85. Lee plans to purchase 0.8 yard for a craft project. How much money will Lee spend on chiffon fabric?
Options:
A. $0.63
B. $6.28
C. $7.05
D. $8.65

Answer:
B. $6.28

Explanation:
At Anne’s Fabric Emporium, a yard of chiffon fabric costs $7.85. Lee plans to purchase 0.8 yards for a craft project.
0.8 x $7.85 = $6.28

Question 19.
Mitchell has $18.79 in his savings account. Jeremy has 3 times as much as Mitchell. Maritza has $4.57 more than Jeremy. How much money does Maritza have in her savings account?
Options:
A. $13.71
B. $32.50
C. $56.37
D. $60.94

Answer:
D. $60.94

Explanation:
Mitchell: $18.79
Jeremy: 3 x $18.79 = $56.37
Maritza: $56.37 + $4.57 = $60.94

Chapter Review/Test – Page No. 198

Constructed Response

Question 20.
A river otter eats about 0.15 times its weight in food each day. At the Baytown Zoo, the male river otter weighs 5 pounds. About how much food will the otter at the zoo consume each day? Explain how you found your answer.
_____ pounds

Answer:
0.75 pounds

Explanation:
A river otter eats about 0.15 times its weight in food each day. At the Baytown Zoo, the male river otter weighs 5 pounds.
0.15 x 5 = 0.75 pounds

Performance Task

Question 21.
The cost of admission to the Baytown Zoo is shown below. Use the table to answer the questions.
Go Math Grade 5 Answer Key Chapter 4 Multiply Decimals Chapter Review/Test img 21
A. A family of 2 adults and 1 child plans to spend the day at the Baytown Zoo. How much does admission for the family cost? Explain how you found your answer.
$ _____

Answer:
$39.75

Explanation:
Senior Citizen = $10.50
Adult = $15.75
Child = $8.25
A family of 2 adults and 1 child plans to spend the day at the Baytown Zoo.
(2 x $15.75) + $8.25
$31.5 + $8.25 = $39.75

Question 21.
B. Describe another way you could solve the problem.
Type below:
________

Answer:
(2 x $15.75) + $8.25
$15.75 + $15.75 + $8.25 = $39.75

Question 21.
C. What if 2 more tickets for admission are purchased? If the two additional tickets cost $16.50, determine what type of tickets the family purchases.
Explain how you can determine the answer without calculating.
Options:
a. Senior tickets
b. Adult tickets
c. Child tickets

Answer:
c. Child tickets

Explanation:
If 2 more tickets for admission are purchased? If the two additional tickets cost $16.50,
$39.75 + $16.50 = $56.25
Two additional children’s tickets are purchased. Since senior citizen tickets cost about $10 each, then 2 tickets would cost about $20, which is too much. Adult tickets cost about $16 each, so 2 adult tickets would cost about $32, which is too much. Children’s tickets cost about $8, and 2 tickets would be about $16 which is correct.

Conclusion:

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Lesson 1: Algebra • Division Patterns with Decimals

Lesson 2: Investigate • Divide Decimals by Whole Numbers

Lesson 3: Estimate Quotients

Lesson 4: Division of Decimals by Whole Numbers

Mid-Chapter Checkpoint

Lesson 5: Investigate • Decimal Divisions

Lesson 6: Divide Decimals

Lesson 7: Write Zeros in the Dividend

Lesson 8: Problem Solving • Decimal Operations

Chapter 5 Review/Test

Share and Show – Page No. 203

Complete the pattern.

Question 1.
456 ÷ 100 = 456
456 ÷ 101 = 45.6
456 ÷ 102 = 4.56
Think: The dividend is being divided by an increasing power of 10, so the decimal point will move to the left one place for each increasing power of 10.
456 ÷ 103 = _____

Answer:
456 ÷ 103 = 0.456

Explanation:
The dividend is being divided by an increasing power of 10, so the decimal point will move to the left one place for each increasing power of 10.
456 ÷ 100 = 456
456 ÷ 101 = 45.6
456 ÷ 102 = 4.56
456 ÷ 103 = 0.456

Complete the pattern.

Question 2.
225 ÷ 100 = _____
225 ÷ 101 = _____
225 ÷ 102 = _____
225 ÷ 103 = _____

Answer:
225 ÷ 100 = 225
225 ÷ 101 = 22.5
225 ÷ 102 = 2.25
225 ÷ 103 = 0.25

Explanation:
The dividend is being divided by an increasing power of 10, so the decimal point will move to the left one place for each increasing power of 10.
225 ÷ 100 = 225/1 = 225
225 ÷ 101 = 225/10 = 22.5
225 ÷ 102 = 225/100 = 2.25
225 ÷ 103 = 225/1,000 = 0.25

Chapter 5 Math Test 5th Grade Question 3.
605 ÷ 100 = _____
605 ÷ 101 = _____
605 ÷ 102 = _____
605 ÷ 103 = _____

Answer:
605 ÷ 100 = 605
605 ÷ 101 = 60.5
605 ÷ 102 = 6.05
605 ÷ 103 = 0.605

Explanation:
The dividend is being divided by an increasing power of 10, so the decimal point will move to the left one place for each increasing power of 10.
605 ÷ 100 = 605/1 = 605
605 ÷ 101 = 605/10 = 60.5
605 ÷ 102 = 605/100 = 6.05
605 ÷ 103 = 605/1,000 = 0.605

Question 4.
74.3 ÷ 1 = _____
74.3 ÷ 10 = _____
74.3 ÷ 100 = _____

Answer:
74.3 ÷ 1 = 74.3
74.3 ÷ 10 = 7.43
74.3 ÷ 100 = 0.743

Explanation:
The dividend is being divided by an increasing power of 10, so the decimal point will move to the left one place for each increasing power of 10.
74.3 ÷ 100 = 74.3 ÷ 1 = 74.3
74.3 ÷ 101 = 74.3 ÷ 10 = 7.43
74.3 ÷ 102 = 74.3 ÷ 100 = 0.743

On Your Own

Complete the pattern.

Question 5.
156 ÷ 1 = _____
156 ÷ 10 = _____
156 ÷ 100 = _____
156 ÷ 1,000 = _____

Answer:
156 ÷ 1 = 156
156 ÷ 10 = 15.6
156 ÷ 100 = 1.56
156 ÷ 1,000 = 0.156

Explanation:
The dividend is being divided by an increasing power of 10, so the decimal point will move to the left one place for each increasing power of 10.
156 ÷ 1 = 156
156 ÷ 10 = 15.6
156 ÷ 100 = 1.56
156 ÷ 1,000 = 0.156

Question 6.
32 ÷ 1 = _____
32 ÷ 10 = _____
32 ÷ 100 = _____
32 ÷ 1,000 = _____

Answer:
32 ÷ 1 = 32
32 ÷ 10 = 3.2
32 ÷ 100 = 0.32
32 ÷ 1,000 = 0.032

Explanation:
The dividend is being divided by an increasing power of 10, so the decimal point will move to the left one place for each increasing power of 10.
32 ÷ 1 = 32
32 ÷ 10 = 3.2
32 ÷ 100 = 0.32
32 ÷ 1,000 = 0.032

Question 7.
16 ÷ 100 = _____
16 ÷ 101 = _____
16 ÷ 102 = _____
16 ÷ 103 = _____

Answer:
16 ÷ 100 = 16
16 ÷ 101 = 1.6
16 ÷ 102 = 0.16
16 ÷ 103 = 0.016

Explanation:
The dividend is being divided by an increasing power of 10, so the decimal point will move to the left one place for each increasing power of 10.
16 ÷ 100 = 16
16 ÷ 101 = 1.6
16 ÷ 102 = 0.16
16 ÷ 103 = 0.016

Question 8.
12.7 ÷ 1 = _____
12.7 ÷ 10 = _____
12.7 ÷ 100 = _____
12.7 ÷ 1,000 = _____

Answer:
12.7 ÷ 1 = 12.7
12.7 ÷ 10 = 1.27
12.7 ÷ 100 = 0.127
12.7 ÷ 1,000 = 0.0127

Explanation:
The dividend is being divided by an increasing power of 10, so the decimal point will move to the left one place for each increasing power of 10.
12.7 ÷ 1 = 12.7
12.7 ÷ 10 = 1.27
12.7 ÷ 100 = 0.127
12.7 ÷ 1,000 = 0.0127

Chapter 5 Review Test 5th Grade Answers Question 9.
92.5 ÷ 100 = _____
92.5 ÷ 101 = _____
92.5 ÷ 102 = _____
92.5 ÷ 103 = _____

Answer:
92.5 ÷ 100 = 92.5
92.5 ÷ 101 = 9.25
92.5 ÷ 102 = 0.925
92.5 ÷ 103 = 0.0925

Explanation:
The dividend is being divided by an increasing power of 10, so the decimal point will move to the left one place for each increasing power of 10.
92.5 ÷ 100 = 92.5
92.5 ÷ 101 = 9.25
92.5 ÷ 102 = 0.925
92.5 ÷ 103 = 0.0925

Question 10.
86.3 ÷ 100 = _____
86.3 ÷ 101 = _____
86.3 ÷ 102 = _____
86.3 ÷ 103 = _____

Answer:
86.3 ÷ 100 = 86.3
86.3 ÷ 101 = 8.63
86.3 ÷ 102 = 0.863
86.3 ÷ 103 = 0.0863

Explanation:
The dividend is being divided by an increasing power of 10, so the decimal point will move to the left one place for each increasing power of 10.
86.3 ÷ 100 = 86.3
86.3 ÷ 101 = 8.63
86.3 ÷ 102 = 0.863
86.3 ÷ 103 = 0.0863

Algebra Find the value of n.

Question 11.
268 ÷ n = 0.268
n = _____

Answer:
n = 1000

Explanation:
268 ÷ n = 0.268
268 = n x 0.268
n = 268 ÷ 0.268
n = 1000

Question 12.
n ÷ 102 = 0.123
n = _____

Answer:
n = 12.3

Explanation:
n ÷ 102 = 0.123
n = 0.123 x 102
n = 0.123 x 100
n = 12.3

Question 13.
n ÷ 101 = 4.6
n = _____

Answer:
n = 46

Explanation:
n ÷ 101 = 4.6
n = 4.6 x 101
n = 4.6 x 10
n = 46

Problem Solving – Page No. 204

Use the table to solve 14–16.
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 1

Question 14.
If each muffin contains the same amount of cornmeal, how many kilograms of cornmeal are in each corn muffin?
_____ kilograms

Answer:
0.15 kilograms

Explanation:
There are 1,000 muffins. Cornmeal = 150 Kg
If each muffin contains the same amount of cornmeal, 150 ÷ 1000 = 0.15
0.15 kilograms of cornmeal is in each corn muffin

Question 15.
If each muffin contains the same amount of sugar, how many kilograms of sugar, to the nearest thousandth, are in each corn muffin?
_____ kilograms

Answer:
0.07 kilograms

Explanation:
There are 1,000 muffins. Sugar = 66.7 kilograms
If each muffin contains the same amount of sugar, 66.7 ÷ 1000 = 0.0667.
0.0667 kilograms of sugar is in each corn muffin.
The thousandth digit is 6. 6 > 5
So, 0.07

5th Grade Go Math Chapter 5 Review Test Question 16.
The bakery decided to make only 100 corn muffins on Tuesday. How many kilograms of sugar will be needed?
_____ kilograms

Answer:
0.007 kilograms

Explanation:
The bakery decided to make only 100 corn muffins on Tuesday.
As 0.07 kilograms are required for 1,000 muffins,
for 100 muffins, (100 x 0.07) ÷ 1000 = 0.007

Question 17.
Explain how you know that the quotient 47.3 ÷ 101 is equal to the product 47.3 × 0.1.
Type below:
_________

Answer:
Quotient 47.3 ÷ 101 = 47.3 ÷ 10 = 4.73. The power of 101 = 10.
47.3 × 0.1 = 4.73.
Dividing 10 to a number is equal to multiplying 0.1 by that number.

Question 18.
Test Prep Ella used 37.2 pounds of apples to make applesauce. She used one-tenth as many pounds of sugar as pounds of apples. How many pounds of sugar did Ella use?
Options:
a. 372 pounds
b. 3.72 pounds
c. 0.372 pound
d. 0.0372 pound

Answer:
b. 3.72 pounds

Explanation:
Ella used 37.2 pounds of apples to make applesauce. She used one-tenth as many pounds of sugar as pounds of apples.
37.2 ÷ 10 = 3.72 pounds

Share and Show – Page No. 207

Use the model to complete the number sentence.

Question 1.
1.6 ÷ 4 =
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 2
_____

Answer:
1.6 ÷ 4  = 0.4

Explanation:
1.6 ÷ 4
Share your model among 4 equal groups.
Since 1 whole cannot be shared among 4 groups without regrouping, cut your model apart to show the tenths.
1 ones = 10 tenths
10 + 6 = 16 tenths
There are 16-tenths in 1.6.
Share the tenths equally among the 4 groups.
There are 0 ones and 16-tenths in each group.
Decimal for the amount in each group = 0.4
1.6 ÷ 4  = 0.4

Go Math Lesson 5.2 Answer Key 5th Grade Question 2.
3.42 ÷ 3 =
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 3
_____

Answer:
3.42 ÷ 3 = 1.14

Explanation:
3.42 ÷ 3
Share your model among 3 equal groups.
1 whole in each group. So, 3 wholes shared equally in 3 groups. 1 ones
3 ÷ 3 = 1 ones
3 tenths shared equally in 3 groups. 1 tenth has remained. 1 tenth
3 ÷ 3 = 1 tenths
1 tenth = 10 hundredths.
10 + 2 = 12 hundredths.
Share 12 hundredths equally among the 3 groups.
12 hundredths ÷ 3 = 4 hundredths.
Decimal for the amount in each group = 1.14
3.42 ÷ 3 = 1.14

Divide. Use base-ten blocks.

Question 3.
1.8 ÷ 3 = _____

Answer:
1.8 ÷ 3 = 0.6

Explanation:
1.8 ÷ 3
Share your model among 3 equal groups.
Since 1 whole cannot be shared among 3 groups without regrouping, cut your model apart to show the tenths. 0 ones
1 ones = 10 tenths
10 + 8 = 18 tenths
There are 18 tenths in 1.8.
Share the 18 tenths equally among the 3 groups.
18 ÷ 3 = 6
There are 0 ones and 18 tenths in each group.
Decimal for the amount in each group = 0.6
1.8 ÷ 3 = 0.6

Question 4.
3.6 ÷ 4 = _____

Answer:
3.6 ÷ 4 = 0.9

Explanation:
3.6 ÷ 4
Share your model among 4 equal groups.
Since 3 whole cannot be shared among 4 groups without regrouping, cut your model apart to show the tenths. 0 ones
1 ones = 10 tenths
30 + 6 = 36 tenths
There are 36 tenths in 3.6.
Share the 36 tenths equally among the 4 groups.
There are 0 ones and 36 tenths in each group.
36 ÷ 4 = 9
Decimal for the amount in each group = 0.9
3.6 ÷ 4 = 0.9

Question 5.
2.5 ÷ 5 = _____

Answer:
2.5 ÷ 5 = 0.5

Explanation:
2.5 ÷ 5
Share your model among 5 equal groups.
Since 2 whole cannot be shared among 5 groups without regrouping, cut your model apart to show the tenths. 0 ones
1 ones = 10 tenths
20 + 5 = 25 tenths
There are 25 tenths in 2.5.
Share the 25 tenths equally among the 5 groups.
There are 0 ones and 25 tenths in each group.
25 ÷ 5 = 5
Decimal for the amount in each group = 0.5
2.5 ÷ 5 = 0.5

Go Math Grade 5 Lesson 5.2 Answer Key Question 6.
2.4 ÷ 8 = _____

Answer:
2.4 ÷ 8 = 0.3

Explanation:
2.4 ÷ 8
Share your model among 8 equal groups.
Since 2 whole cannot be shared among 8 groups without regrouping, cut your model apart to show the tenths. 0 ones
1 ones = 10 tenths
20 + 4 = 24 tenths
There are 24-tenths in 2.4.
Share the 24-tenths equally among the 8 groups.
There are 0 ones and 24-tenths in each group.
24 ÷ 8 = 3
Decimal for the amount in each group = 0.3
2.4 ÷ 8 = 0.3

Question 7.
3.78 ÷ 3 = _____

Answer:
3.78 ÷ 3 = 1.26

Explanation:
3.78 ÷ 3
Share your model among 3 equal groups.
1 whole in each group. So, 3 wholes are shared equally in 3 groups.
3 ÷ 3 = 1 ones
6 tenths are shared equally in 3 groups. 1 tenth has remained.
6 ÷ 3 = 2 tenths
1 tenth = 10 hundredths.
10 + 8 = 18 hundredths.
Share 18 hundredths equally among the 3 groups.
18 hundredths ÷ 3 = 6 hundredths.
Decimal for the amount in each group = 1.26
3.78 ÷ 3 = 1.26

Question 8.
1.33 ÷ 7 = _____

Answer:
1.33 ÷ 7 = 0.19

Explanation:
1.33 ÷ 7
Share your model among 7 equal groups.
Since 1 whole cannot be shared among 7 groups without regrouping, cut your model apart to show the tenths. 0 ones
1 ones = 10 tenths
10 + 3 = 13 tenths
There are 13 tenths in 1.3.
Share the 13 tenths equally among the 7 groups.
Share 7 tenths equally among the 3 groups. 6 tenths remained.
7 ÷ 7 = 1 tenths
Since 6 tenths cannot be shared among 7 groups without regrouping, cut your model apart to show the tenths.
1 tenths = 10 hundredths
60 + 3 = 63 hundredths
Share 63 hundredths equally among the 7 groups.
63 ÷ 7 = 9 hundredths
Decimal for the amount in each group = 0.19
1.33 ÷ 7 = 0.19

Question 9.
4.72 ÷ 4 = _____

Answer:
4.72 ÷ 4 = 1.18

Explanation:
4.72 ÷ 4
Share your model among 4 equal groups.
1 whole in each group. So, 4 wholes shared equally in 4 groups. 1 ones
4 ÷ 4 = 1 ones
4 tenths shared equally in 4 groups. 3 tenths have remained.
4 ÷ 4 = 1 tenths
1 tenth = 10 hundredths.
30 + 2 = 32 hundredths.
Share 32 hundredths equally among the 4 groups.
32 hundredths ÷ 4 = 8 hundredths.
Decimal for the amount in each group = 1.18
4.72 ÷ 4 = 1.18

Go Math Lesson 5.2 5th Grade Question 10.
2.52 ÷ 9 = _____

Answer:
2.52 ÷ 9 = 0.28

Explanation:
2.52 ÷ 9
Share your model among 9 equal groups.
Since 2 whole cannot be shared among 9 groups without regrouping, cut your model apart to show the tenths.
9 ÷ 9 = 1 ones
1 ones = 10 tenths
20 + 5 = 25 tenths
There are 25 tenths in 2.5.
Share the 18 tenths equally among the 9 groups. 7 tenths remained.
18 ÷ 9 = 2 tenths
1 tenth = 10 hundredths.
70 + 2 hundredths = 72 hundredths
Share the 72 hundredths equally among the 9 groups.
72 ÷ 9 = 8
Decimal for the amount in each group = 0.28
2.52 ÷ 9 = 0.28

Question 11.
6.25 ÷ 5 = _____

Answer:
6.25 ÷ 5 = 1.25

Explanation:
6.25 ÷ 5
Share your model among 5 equal groups.
1 whole in each group. So, 5 wholes shared equally in 5 groups. 1 whole remained.
5 ÷ 5 = 1 ones 
1 ones = 10 tenths
10 + 2 = 12 tenths
10 tenths shared equally in 5 groups. 2 tenths have remained.
10 ÷ 5 = 2 tenths
1 tenth = 10 hundredths.
20 + 5 = 25 hundredths.
Share 25 hundredths equally among the 5 groups.
25 hundredths ÷ 5 = 5 hundredths.
Decimal for the amount in each group = 1.25
6.25 ÷ 5 = 1.25

Problem Solving – Page No. 208

What’s the Error?

Question 12.
Aida is making banners from a roll of paper that is 4.05 meters long. She will cut the paper into 3 equal lengths. How long will each banner be?
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 4
Look how Aida solved the problem.      Solve the problem and correct
Find the error.                                            the error.
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 5
So, Aida said that each banner would be _________ meters long, but each banner should be _________ meters long.
Type below:
_________

Answer:
So, Aida said that each banner would be 4.05 meters long, but each banner should be 1.35 meters long.
So, 1 ones, 3 tenths, and 5 hundredths are shared among 3 groups.
But Aida draws only one whole and 5 hundredths among 3 groups.

Explanation:
Aida is making banners from a roll of paper that is 4.05 meters long. She will cut the paper into 3 equal lengths.
4.05 ÷ 3
Share your model among 3 equal groups.
1 whole in each group. So, 3 wholes shared equally in 5 groups. 1 whole remained.
3 ÷ 3 = 1 ones 
1 ones = 10 tenths
10 + 0 = 10 tenths
9 tenths shared equally in 3 groups. 1 tenth remained.
9 ÷ 3 = 3 tenths
1 tenth = 10 hundredths.
10 + 5 = 15 hundredths.
Share 6 hundredths equally among the 3 groups.
15 hundredths ÷ 3 = 5 hundredths.
Decimal for the amount in each group = 1.35
4.05 ÷ 3 = 1.35

Question 12.
• Describe Aida’s error.
Type below:
_________

Answer:
So, Aida said that each banner would be 4.05 meters long, but each banner should be 1.35 meters long.
So, 1 one, 3 tenths, and 5 hundredths are shared among 3 groups.
But Aida draws only one whole and 5 hundredths among 3 groups.

5th Grade Math Workbook Pdf With Answers Question 12.
• What if the roll of paper were 4.35 meters long? How long would each banner be?
Type below:
_________

Answer:
1.45 meters long

Explanation:
If the roll paper were 4.35 meters long,
4.35 ÷ 3
Share your model among 3 equal groups.
1 whole in each group. So, 3 wholes are shared equally in 5 groups. 1 whole remained.
3 ÷ 3 = 1 ones 
1 ones = 10 tenths
10 + 3 = 13 tenths
12 tenths shared equally in 3 groups. 1 tenth remained.
12 ÷ 3 = 4 tenths
1 tenth = 10 hundredths.
10 + 5 = 15 hundredths.
Share 6 hundredths equally among the 3 groups.
15 hundredths ÷ 3 = 5 hundredths.
Decimal for the amount in each group = 1.45
4.35 ÷ 3 = 1.45

Share and Show – Page No. 211

Use compatible numbers to estimate the quotient.

Question 1.
28.8 ÷ 9
Type below:
_________

Answer:
About to 3

Explanation:
28.8 is closer to 30
9 is closer to 10
30 ÷ 10 = 3

Question 2.
393.5 ÷ 41
_____ ÷ _____ = _____

Answer:
400 ÷ 40 = 10

Explanation:
Use a whole number greater than the dividend.
393.5 is closer to 400
41 is closer to 40
400 ÷ 40 = 10
Use a whole number less than the dividend.
393.5 is closer to 360
41 is closer to 40
360 ÷ 40 = 9
The quotient should be between 9 and 10.
393.5 is closer to 400.
So, the answer is about 10

Estimate the quotient.

Question 3.
161.7 ÷ 7
_____

Answer:
About 23

Explanation:
161.7 is closer to 161
161 ÷ 7 = 23

Question 4.
17.9 ÷ 9
_____

Answer:
About 2

Explanation:
17.9 is closer to 18
18 ÷ 9 = 2

Question 5.
145.4 ÷ 21
_____

Answer:
about 7

Explanation:
Use a whole number greater than the dividend.
145.4 is closer to 160
21 is closer to 20
160 ÷ 20 = 8
Use a whole number less than the dividend.
145.4 is closer to 140
21 is closer to 20
140 ÷ 20 = 7
The quotient should be between 7 and 8.
145.4 is closer to 140.
So, the answer is about 7

On Your Own

Estimate the quotient.

Question 6.
15.5 ÷ 4
_____

Answer:
About 4

Explanation:
15.5 is closer to 16
16 ÷ 4 = 4

Go Math Grade 5 Chapter 5 Review Test Answer Key Question 7.
394.8 ÷ 7
_____

Answer:
About 60

Explanation:
394.8 is closer to 420
420 ÷ 7 = 60
About 60

Question 8.
410.5 ÷ 18
_____

Answer:
About 22

Explanation:
410.5 is closer to 396
396 ÷ 18 = 22

Question 9.
72.1 ÷ 7
_____

Answer:
About 10

Explanation:
72.1 is closer to 70
70 ÷ 7 = 10

Question 10.
32.4 ÷ 52
_____

Answer:
About 1

Explanation:
32.4 is closer to 52
52 ÷ 52 = 1

Question 11.
$134.42 ÷ 28
$ _____

Answer:
about 4

Explanation:
Use a whole number greater than the dividend.
$134.42 is closer to 150
28 is closer to 30
150 ÷ 30 = 5
Use a whole number less than the dividend.
$134.42 is closer to 120
28 is closer to 30
120 ÷ 30 = 4
The quotient should be between 4 and 5.
$134.42 is closer to $120.
So, the answer is about 4

Question 12.
21.8 ÷ 4
_____

Answer:
About 5

Explanation:
21.8 is closer to 20
20 ÷ 4 = 5

Question 13.
3.4 ÷ 5
_____

Answer:
About 1

Explanation:
3.4 is closer to 5
5 ÷ 5 = 1
About 1

Question 14.
$759.92 ÷ 42
$ _____

Answer:
About $18

Explanation:
$759.92 is closer to $756
$756 ÷ 42 = 18
About 18

Go Math Grade 5 Chapter 5 Review Test Question 15.
157.5 ÷ 38
_____

Answer:
About 4

Explanation:
157.5 is closer to 152
152 ÷ 38 = 4

Question 16.
379.2 ÷ 6
_____

Answer:
About 63

Explanation:
379.2 is closer to 378
378 ÷ 6 = 63

Question 17.
108.4 ÷ 21
_____

Answer:
About 5

Explanation:
108.4 is closer to 100
21 is closer to 20
100 ÷ 20 = 5

Problem Solving – Page No. 212

Use the table to solve 18–20.
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 6

Question 18.
Estimate the average daily snowfall for Alaska’s greatest 7-day snowfall.
_____ inches

Answer:
26 inches

Explanation:
Alaska = 186.9 inches snowfall for 7 days.
For 1 day, 186.9 ÷ 7
186.9 is closer to 182
1825 ÷ 7 = 26 inches

Question 19.
How does the estimate of the average daily snowfall for Wyoming’s greatest 7-day snowfall compare to the estimate of the average daily snowfall for South Dakota’s greatest 7-day snowfall?
Type below:
_________

Answer:
South Dakota’s snowfall is greater than Wyoming’s snowfall.

Explanation:
Wyoming’s = 84.5 inches of snowfall for 7 days.
For 1 day, 84.5 ÷ 7
84.5 is closer to 84
84 ÷ 7 = 12 inches
South Dakota’s = 112.7 inches of snowfall for 7 days.
For 1 day, 112.7 ÷ 7
112.7 is closer to 112
112 ÷ 7 = 16 inches

Question 20.
The greatest monthly snowfall total in Alaska is 297.9 inches. This happened in February 1953. Compare the daily average snowfall for February 1953, with the average daily snowfall for Alaska’s greatest 7-day snowfall. Use estimation.
Type below:
_________

Answer:
The average snowfall of Alaska in February 1953 is greater than the snowfall for Alaska’s greatest 7-day snowfall.

Explanation:
Alaska = 186.9 inches of snowfall for 7 days.
For 1 day, 186.9 ÷ 7
186.9 is closer to 182
1825 ÷ 7 = 26 inches
Alaska = 297.9 inches of snowfall for 7 days.
For 1 day, 297.9 ÷ 7
297.9 is closer to 294
294 ÷ 7 = 42 inches

Go Math 5th Grade Chapter 5 Review Test Answer Key Question 21.
What’s the Error? During a 3-hour storm, it snowed 2.5 inches. Jacob said that it snowed an average of about 8 inches per hour.
Type below:
_________

Answer:
During a 3-hour storm, it snowed 2.5 inches.
For 1 hour, 2.5 ÷ 3 = 0.833
Jacob said that it snowed an average of about 8 inches per hour. He missed the remained inches.

Question 22.
Test Prep A plant grew 23.8 inches over 8 weeks. Which is the best estimate of the average number of inches the plant grew each week?
Options:
a. 0.2 inch
b. 0.3 inch
c. 2 inch
d. 3 inch

Answer:
d. 3 inch

Explanation:
A plant grew 23.8 inches over 8 weeks.
23.8 is closer to 24
24 ÷ 8 = 3 inch

Share and Show – Page No. 215

Write the quotient with the decimal point placed correctly.

Question 1.
4.92 ÷ 2 = 246
_____

Answer:
2.46

Explanation:
Divide. 4 ones ÷ 2
Multiply. 2 × 2 ones = 4 ones. Subtract. 4 ones − 4 ones = 0
Check. 4 ones are shared among 2 groups as 2 wholes.
Divide. 9 tenths ÷ 2
Multiply. 2 × 4 tenths = 8 tenths. Subtract. 9 tenths − 8 tenths = 1 tenths
Check. 8 tenths shared among 2 groups as 4 tenths. 1 tenth remained.
1 tenth = 10 hundredths.
10 + 2 = 12 hundredths
Divide. 12 hundredths ÷ 2
Multiply. 2 × 6 hundredths = 12 hundredths. Subtract. 12 hundredths − 12 hundredths = 0 hundredths
Check. 12 hundredths shared among 2 groups as 6 hundredths.
So, 2.46

Question 2.
50.16 ÷ 38 = 132
_____

Answer:
1.32

Explanation:
Divide. 50 ones ÷ 38
Multiply. 38 × 1 ones = 38 ones. Subtract. 50 ones − 38 ones = 12 ones
Check. 38 ones shared among 38 groups as 1 whole.
12 one(s) cannot be shared among 38 groups without regrouping.
120 + 1 = 121 tenths
Divide. 121 tenths ÷ 38
Multiply. 38 x 3 tenths = 114 tenths. Subtract. 121 tenths − 114 tenths = 7 tenths
Check. 114 tenths shared among 38 groups as 3 tenths. 7 tenths remained.
1 tenth = 10 hundredths.
70 + 6 = 76 hundredths
Divide. 76 hundredths ÷ 38
Multiply. 38 x 2 hundredths = 76 hundredths. Subtract. 76 hundredths − 76 hundredths = 0 hundredths
Check. 76 hundredths shared among 38 groups as 2 hundredths.
So, 1.32

Divide.

Question 3.
5)\(\overline { 8.65 }\)
_____

Answer:
1.73

Explanation:
8.65 ÷ 5
Divide. 8 ones ÷ 5
Multiply. 5 × 1 ones = 5ones. Subtract. 8 ones − 5 ones = 3 ones
Check. 5 ones shared among 5 groups as 1 whole.
3 one(s) cannot be shared among 5 groups without regrouping.
30 + 6 = 36 tenths
Divide. 36 tenths ÷ 5
Multiply. 5 x 7 tenths = 35 tenths. Subtract. 36 tenths − 35 tenths = 7 tenths
Check. 35 tenths shared among 5 groups as 7 tenths.
1 tenths(s) cannot be shared among 5 groups without regrouping.
1 tenth = 10 hundredths.
10 + 5 = 15 hundredths
Divide. 15 hundredths ÷ 5
Multiply. 5 x 3 hundredths = 15 hundredths. Subtract. 15 hundredths − 15 hundredths = 0 hundredths
Check. 15 hundredths shared among 5 groups as 3 hundredths.
So, 1.73

5th Grade Go Math Chapter 5 Review Test Question 4.
3)\(\overline { 2.52 }\)
_____

Answer:
0.84

Explanation:
2.52 ÷ 3
2 one(s) cannot be shared among 3 groups without regrouping.
20 + 5 = 25 tenths
Divide. 25 tenths ÷ 3
Multiply. 3 x 8 tenths = 24 tenths. Subtract. 25 tenths − 24 tenths = 1 tenths
Check. 24 tenths shared among 3 groups as 8 tenths.
1 tenths(s) cannot be shared among 3 groups without regrouping.
1 tenth = 10 hundredths.
10 + 2 = 12 hundredths
Divide. 12 hundredths ÷ 3
Multiply. 3 x 4 hundredths = 12 hundredths. Subtract. 12 hundredths − 12 hundredths = 0 hundredths
Check. 12 hundredths shared among 3 groups as 4 hundredths.
So, 0.84

Question 5.
27)\(\overline { 97.2 }\)
_____

Answer:
3.6

Explanation:
97.2 ÷ 27
Divide. 97 ones ÷ 27
Multiply. 27 x 3 ones = 81 ones. Subtract. 97 ones − 81 ones = 16 ones
Check. 81 ones shared among 27 groups as 3 whole.
16 one(s) cannot be shared among 27 groups without regrouping.
160 + 2 = 162 tenths
Divide. 162 tenths ÷ 27
Multiply. 27 x 6 tenths = 162 tenths. Subtract. 162 tenths − 162 tenths = 0 tenths
Check. 162 tenths shared among 27 groups as 6 tenths.
So, 3.6

On Your Own

Divide.

Question 6.
6)\(\overline { 8.94 }\)
_____

Answer:
1.49

Explanation:
8.94 ÷ 6
Divide. 8 ones ÷ 6
Multiply. 6 × 1 ones = 6 ones. Subtract. 8 ones − 6 ones = 2 ones
Check. 6 ones shared among 6 groups as 1 whole.
2 one(s) cannot be shared among 6 groups without regrouping.
20 + 9 = 29 tenths
Divide. 29 tenths ÷ 6
Multiply. 6 x 4 tenths = 24 tenths. Subtract. 29 tenths − 24 tenths = 5 tenths
Check. 24 tenths shared among 6 groups as 4 tenths.
5 tenths(s) cannot be shared among 6 groups without regrouping.
1 tenth = 10 hundredths.
50 + 4 = 54 hundredths
Divide. 54 hundredths ÷ 6
Multiply. 6 x 9 hundredths = 54 hundredths. Subtract. 54 hundredths − 54 hundredths = 0 hundredths
Check. 54 hundredths shared among 6 groups as 54 hundredths.
So, 1.49

Question 7.
5)\(\overline { 3.75 }\)
_____

Answer:
0.75

Explanation:
3.75 ÷ 5
3 one(s) cannot be shared among 5 groups without regrouping.
30 + 7 = 37 tenths
Divide. 37 tenths ÷ 5
Multiply. 5 x 7 tenths = 35 tenths. Subtract. 37 tenths − 35 tenths = 2 tenths
Check. 35 tenths shared among 5 groups as 7 tenths.
2 tenths(s) cannot be shared among 5 groups without regrouping.
1 tenth = 10 hundredths.
20 + 5 = 25 hundredths
Divide. 25 hundredths ÷ 5
Multiply. 5 x 5 hundredths = 25 hundredths. Subtract. 25 hundredths − 25 hundredths = 0 hundredths
Check. 25 hundredths shared among 5 groups as 25 hundredths.
So, 0.75

Question 8.
19)\(\overline { 55.1 }\)
_____

Answer:
2.9

Explanation:
55.1 ÷ 19
Divide. 55 ones ÷ 19
Multiply. 19 × 2 ones = 38 ones. Subtract. 55 ones − 38 ones = 17 ones
Check. 38 ones shared among 19 groups as 2 whole.
17 one(s) cannot be shared among 19 groups without regrouping.
170 + 1 = 171 tenths
Divide. 171 tenths ÷ 19
Multiply. 19 x 9 tenths = 171 tenths. Subtract. 171 tenths − 171 tenths = 0 tenths
Check. 171 tenths shared among 19 groups as 9 tenths.
So, 2.9

Question 9.
23)\(\overline { 52.9 }\)
_____

Answer:
2.3

Explanation:
52.9 ÷ 23
Divide. 52 ones ÷ 23
Multiply. 23 × 2 ones = 46 ones. Subtract. 52 ones − 46 ones = 6 ones
Check. 46 ones shared among 23 groups as 2 whole.
6 one(s) cannot be shared among 23 groups without regrouping.
60 + 9 = 69 tenths
Divide. 69 tenths ÷ 23
Multiply. 23 x 3 tenths = 69 tenths. Subtract. 69 tenths − 69 tenths = 0 tenths
Check. 69 tenths shared among 23 groups as 3 tenths.
So, 2.3

Go Math Grade 5 Workbook Lesson 5.5 Answer Key Question 10.
8)\(\overline { $8.24 }\)
$ _____

Answer:

Explanation:
8.24 ÷ 8
Divide. 8 ones ÷ 8
Multiply. 8 × 1 ones = 8 ones. Subtract. 8 ones − 8 ones = 0 ones
Check. 8 ones shared among 8 groups as 1 whole.
2 tenths(s) cannot be shared among 8 groups without regrouping.
1 tenth = 10 hundredths.
20 + 4 = 24 hundredths
Divide. 24 hundredths ÷ 8
Multiply. 8 x 3 hundredths = 24 hundredths. Subtract. 24 hundredths − 24 hundredths = 0 hundredths
Check. 24 hundredths shared among 8 groups as 3 hundredths.
So, 1.03

Question 11.
5)\(\overline { 44.5 }\)
_____

Answer:

Explanation:
44.5 ÷ 5
Divide. 44 ones ÷ 5
Multiply. 5 x 8 ones = 40 ones. Subtract. 44 ones − 40 ones = 4 ones
Check. 40 ones shared among 5 groups as 8 wholes.
4 one(s) cannot be shared among 5 groups without regrouping.
40 + 5 = 45 tenths
Divide. 45 tenths ÷ 5
Multiply. 5 x 9 tenths = 45 tenths. Subtract. 45 tenths − 45 tenths = 0 tenths
Check. 45 tenths shared among 5 groups as 9 tenths.
So, 8.9

Practice: Copy and Solve Divide.

Question 12.
3)\(\overline { $7.71 }\)
$_____

Answer:
2.57

Explanation:
7.71 ÷ 3
Divide. 7 ones ÷ 3
Multiply. 3 x 2 ones = 6 ones. Subtract. 7 ones − 6 ones = 1 ones
Check. 6 ones shared among 3 groups as 2 wholes.
1 one(s) cannot be shared among 3 groups without regrouping.
10 + 7 = 17 tenths
Divide. 17 tenths ÷ 3
Multiply. 3 x 5 tenths = 15 tenths. Subtract. 17 tenths − 15 tenths = 2 tenths
Check. 15 tenths shared among 3 groups as 5 tenths.
2 tenths(s) cannot be shared among 3 groups without regrouping.
1 tenth = 10 hundredths.
20 + 1 = 21 hundredths
Divide. 21 hundredths ÷ 3
Multiply. 3 x 7 hundredths = 21 hundredths. Subtract. 21 hundredths − 21 hundredths = 0 hundredths
Check. 21 hundredths shared among 3 groups as 7 hundredths.
So, 2.57

Question 13.
14)\(\overline { 79.8 }\)
_____

Answer:
5.7

Explanation:
79.8 ÷ 14
Divide. 79 ones ÷ 14
Multiply. 14 x 5 ones = 70 ones. Subtract. 79 ones − 70 ones = 9 ones
Check. 70 ones shared among 14 groups as 5 wholes.
9 one(s) cannot be shared among 14 groups without regrouping.
90 + 8 = 98 tenths
Divide. 98 tenths ÷ 14
Multiply. 14 x 7 tenths = 98 tenths. Subtract. 98 tenths − 98 tenths = 0 tenths
Check. 98 tenths shared among 14 groups as 7 tenths.
So, 5.7

Question 14.
33)\(\overline { 25.41 }\)
_____

Answer:
0.77

Explanation:
25.41 ÷ 33
Divide. 25 ones ÷ 33
25 one(s) cannot be shared among 33 groups without regrouping.
250 + 4 = 254 tenths
Divide. 254 tenths ÷ 33
Multiply. 33 x 7 tenths = 231 tenths. Subtract. 254 tenths − 231 tenths = 23 tenths
Check. 231 tenths shared among 33 groups as 7 tenths.
23 tenths(s) cannot be shared among 33 groups without regrouping.
1 tenth = 10 hundredths.
230 + 1 = 231 hundredths
Divide. 231 hundredths ÷ 33
Multiply. 33 x 7 hundredths= 231 hundredths. Subtract. 231 hundredths− 231 hundredths = 0 hundredths
Check. 231 tenths shared among 33 groups as 7 tenths.
So, 0.77

Question 15.
7)\(\overline { 15.61 }\)
_____

Answer:
2.23

Explanation:
15.61 ÷ 7
Divide. 15 ones ÷ 7
Multiply. 7 x 2 ones =  14 ones. Subtract. 15 ones − 14 ones = 1 ones
Check. 14 ones shared among 7 groups as 2 wholes.
1 one(s) cannot be shared among 7 groups without regrouping.
10 + 6 = 16 tenths
Divide. 16 tenths ÷ 7
Multiply. 7 x 2 tenths = 14 tenths. Subtract. 16 tenths − 14 tenths = 2 tenths
Check. 14 tenths shared among 7 groups as 2 tenths.
2 tenths(s) cannot be shared among 7 groups without regrouping.
1 tenth = 10 hundredths.
20 + 1 = 21 hundredths
Divide. 21 hundredths ÷ 7
Multiply. 7 x 3 hundredths = 21 hundredths. Subtract. 21 hundredths − 21 hundredths = 0 hundredths
Check. 21 hundredths shared among 7 groups as 3 hundredths.
So, 2.23

Question 16.
14)\(\overline { 137.2 }\)
_____

Answer:
9.8

Explanation:
137.2 ÷ 14
Divide. 137 ones ÷ 14
Multiply. 14 x 9 ones =  126 ones. Subtract. 137 ones − 126 ones = 11 ones
Check. 126 ones shared among 14 groups as 9 wholes.
11 one(s) cannot be shared among 14 groups without regrouping.
110 + 2 = 112 tenths
Divide. 112 tenths ÷ 14
Multiply. 14 x 8 tenths = 112 tenths. Subtract. 112 tenths − 112 tenths = 0 tenths
Check. 112 tenths shared among 14 groups as 8 tenths.
So, 9.8

Lesson 5.4 Answer Key Grade 5 Question 17.
34)\(\overline { 523.6 }\)
_____

Answer:
15.4

Explanation:
523.6 ÷ 34
Divide. 523 ones ÷ 34
Multiply. 34 x 15 ones = 510 ones. Subtract. 523 ones − 510 ones = 13 ones
Check. 510 ones shared among 34 groups as 15 wholes.
13 one(s) cannot be shared among 34 groups without regrouping.
130 + 6 = 136 tenths
Divide. 136 tenths ÷ 34
Multiply. 34 x 4 tenths = 136 tenths. Subtract. 136 tenths − 136 tenths = 0 tenths
Check. 136 tenths shared among 34 groups as 4 tenths.
So, 15.4

Algebra Write the unknown number for each ■.

Question 18.
■ ÷ 5 = 1.21
■ = _____

Answer:
6.05

Explanation:
■ ÷ 5 = 1.21
■ = 1.21 x 5
■ = 6.05

Question 19.
46.8 ÷ 1.2 = ■
■ = _____

Answer:
39

Explanation:
46.8 ÷ 1.2 = ■
39 = ■

Question 20.
34.1 ÷ ■ = 22
■ = _____

Answer:
1.55

Explanation:
34.1 ÷ ■ = 22
■ = 34.1 ÷ 22
■ = 1.55

UNLOCK the Problem – Page No. 216

Question 21.
The standard width of 8 lanes in swimming pools used for competitions is 21.92 meters. The standard width of 9 lanes is 21.96 meters. How much wider is each lane when there are 8 lanes than when there are 9 lanes?
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 7
a. What are you asked to find?
Type below:
_________

Answer:
We have to find how much wider is each line When there are 8 lanes than when there are 9 lanes.

Question 21.
b. What operations will you use to solve the problem?
Type below:
_________

Answer:
Division
Subtraction

Question 21.
c. Show the steps you used to solve the problem.
Type below:
_________

Answer:
21.92 ÷ 8 = 2.74 meters
21.96 ÷ 9 = 2.44 meters
2.74 – 2.44 = 0.30 meters

Question 21.
d. Complete the sentences.
Each lane is ______ meters wide when there are 8 lanes.
Each lane is ______ meters wide when there are 9 lanes.
Since ______ – ______ = ______ , the lanes are ______ meter(s) wider when there are 8 lanes than when there are 9 lanes.
Type below:
_________

Answer:
Each lane is 2.74 meters wide when there are 8 lanes.
Each lane is 2.44 meters wide when there are 9 lanes.
Since 2.74 – 2.44 = 0.30, the lanes are 0.30 meter(s) wider when there are 8 lanes than when there are 9 lanes.

Question 21.
e. Fill in the bubble for the correct answer choice.
Options:
a. 0.30 meter
b. 2.44 meters
c. 2.74 meters
d. 22.28 meters

Answer:
a. 0.30 meter

Go Math 5th Grade Lesson 5.4 Answer Key Question 22.
Robert pays $32.04 for 6 student tickets to the basketball game. What is the cost of each student ticket?
Options:
a. $192.24
b. $53.40
c. $26.04
d. $5.34

Answer:
d. $5.34

Explanation:
Robert pays $32.04 for 6 student tickets to the basketball game.
$32.04 ÷ 6 = $5.34

Question 23.
Jasmine uses 14.24 pounds of fruit for 16 servings of fruit salad. If each serving contains the same amount of fruit, how much fruit is in each serving?
Options:
a. 0.089 pound
b. 0.89 pound
c. 1.76 pounds
d. 17.6 pounds

Answer:
b. 0.89 pound

Explanation:
Jasmine uses 14.24 pounds of fruit for 16 servings of fruit salad. If each serving contains the same amount of fruit, 14.24 ÷ 16 = 0.89 pounds

Mid-Chapter Checkpoint – Page No. 217

Concepts and Skills

Question 1.
Explain how the position of the decimal point changes in a quotient as you divide by increasing powers of 10.
Type below:
_________

Answer:
Dividing a number by ten shifts the decimal point of the dividend one place to the left, making that into a smaller number, the desired quotient, which is one-tenth of the dividend.

Question 2.
Explain how you can use base-ten blocks to find 2.16 ÷ 3.
Type below:
_________

Answer:
0.72

Explanation:
2.16 ÷ 3
There are 2 ones, 1 tenths, and 6 hundredths.
2.16 ÷ 3 =
Chapter 5 grade 5 Divide Decimals 217 image 1
2 ones cannont be shared for 3 groups.
So, write 2 ones as 20 tenths.
20 + 1 = 21 tenths.
21 tenths ÷ 3 = 7 tenths.
7 tenths shared amount 3 groups = 21 tenths
6 hundredths ÷ 3 = 2 hundredths.
2 hundredths shared amount 3 groups = 6 hundredths.
0.72

Complete the pattern.

Question 3.
223 ÷ 1 = _______
223 ÷ 10 = _______
223 ÷ 100 = _______
223 ÷ 1000 = _______

Answer:
223 ÷ 1 = 223
223 ÷ 10 = 22.3
223 ÷ 100 = 2.23
223 ÷ 1000 = 0.223

Explanation:
223 ÷ 1 = 223
223 ÷ 10 = 22.3
223 ÷ 100 = 2.23
223 ÷ 1000 = 0.223

Question 4.
61 ÷ 1 = 61
61 ÷ 10 = 6.1
61 ÷ 100 = 0.61
61 ÷ 1,000 = 0.061

Answer:
61 ÷ 1 = 61
61 ÷ 10 = 6.1
61 ÷ 100 = 0.61
61 ÷ 1,000 = 0.061

Explanation:

Question 5.
57.4 ÷ 100 = _______
57.4 ÷ 101 = _______
57.4 ÷ 102 = _______

Answer:
57.4 ÷ 100 = 57.4
57.4 ÷ 101 = 5.74
57.4 ÷ 102 = 0.574

Explanation:
57.4 ÷ 100 = 57.4 ÷ 1 = 57.4
57.4 ÷ 101 = 57.4 ÷ 10 = 5.74
57.4 ÷ 102 = 57.4 ÷ 100 = 0.574

Estimate the quotient.

Question 6.
31.9 ÷ 4 = ______

Answer:
About 8

Explanation:
31.9 is closer to 32
32 ÷ 4 = 8

Question 7.
6.1 ÷ 8 = ______

Answer:
About 8

Explanation:
6.1 is closer to 64
64 ÷ 8 = 8

Question 8.
492.6 ÷ 48 = ______

Answer:
About 10

Explanation:
492.6 is closer to 480
480 ÷ 48 = 10

Divide.

Question 9.
5)\(\overline { 4.35 }\)
_____

Answer:
0.87

Explanation:
4.35 ÷ 5
Divide. 8 ones ÷ 5
4 one(s) cannot be shared among 5 groups without regrouping.
40 + 3 = 43 tenths
Divide. 43 tenths ÷ 5
Multiply. 5 x 8 tenths = 40 tenths. Subtract. 43 tenths − 40 tenths = 3 tenths
Check. 40 tenths shared among 5 groups as 8 tenths.
3 tenths(s) cannot be shared among 5 groups without regrouping.
1 tenth = 10 hundredths.
30 + 5 = 35 hundredths
Divide. 35 hundredths ÷ 5
Multiply. 5 x 7 hundredths = 35 hundredths. Subtract. 35 hundredths − 35 hundredths = 0 hundredths
Check. 35 hundredths shared among 5 groups as 7 hundredths.
So, 0.87

Question 10.
8)\(\overline { 9.92 }\)
_____

Answer:
1.24

Explanation:
9.92 ÷ 8
Divide. 9 ones ÷ 8
Multiply. 8 × 1 ones = 8 ones. Subtract. 9 ones − 8 ones = 1 ones
Check. 8 ones shared among 8 groups as 1 whole.
1 one(s) cannot be shared among 8 groups without regrouping.
10 + 9 = 19 tenths
Divide. 19 tenths ÷ 8
Multiply. 8 x 2 tenths = 16 tenths. Subtract. 19 tenths − 16 tenths = 3 tenths
Check. 16 tenths shared among 8 groups as 2 tenths.
3 tenths(s) cannot be shared among 8 groups without regrouping.
1 tenth = 10 hundredths.
30 + 2 = 32 hundredths
Divide. 32 hundredths ÷ 8
Multiply. 8 x 4 hundredths = 32 hundredths. Subtract. 32 hundredths − 32 hundredths = 0 hundredths
Check. 32 hundredths shared among 8 groups as 4 hundredths.
So, 1.24

Question 11.
61)\(\overline { 207.4 }\)
_____

Answer:
3.4

Explanation:
207.4 ÷ 61
Divide. 207 ones ÷ 61
Multiply. 61 x 3 ones = 183 ones. Subtract. 207 ones − 183 ones = 24 ones
Check. 183 ones shared among 61 groups as 3 wholes.
24 one(s) cannot be shared among 61 groups without regrouping.
240 + 4 = 244 tenths
Divide. 244 tenths ÷ 61
Multiply. 61 x 4 tenths = 244 tenths. Subtract. 244 tenths − 244 tenths = 0 tenths
Check. 244 tenths shared among 61 groups as 4 tenths.
So, 3.4

Mid-Chapter Checkpoint – Page No. 218

Question 12.
The Westside Bakery uses 440 pounds of flour to make 1,000 loaves of bread. Each loaf contains the same amount of flour. How many pounds of flour are used in each loaf of bread?
_____ pounds

Answer:
0.440 pounds

Explanation:
The Westside Bakery uses 440 pounds of flour to make 1,000 loaves of bread. Each loaf contains the same amount of flour.
440/1000 = 0.440 pounds

Question 13.
Elise pays $21.75 for 5 student tickets to the fair. What is the cost of each student ticket?
$ _____

Answer:
$4.35

Explanation:
Elise pays $21.75 for 5 student tickets to the fair.
$21.75/5 = $4.35

Question 14.
Jason has a piece of wire that is 62.4 inches long. He cuts the wire into 3 equal pieces. Estimate the length of 1 piece of wire.
_____ in

Answer:
20.8 inches

Explanation:
Jason has a piece of wire that is 62.4 inches long. He cuts the wire into 3 equal pieces.
62.4/3 = 20.8 inches

Question 15.
Elizabeth uses 23.25 ounces of granola and 10.5 ounces of raisins for 15 servings of trail mix. If each serving contains the same amount of trail mix, how much trail mix is in each serving?
_____ ounces

Answer:
2.25 ounces

Explanation:
Elizabeth uses 23.25 ounces of granola and 10.5 ounces of raisins for 15 servings of trail mix.
23.25 + 10.5 = 33.75
33.75/15 = 2.25 ounces

Share and Show – Page No. 221

Use the model to complete the number sentence.

Question 1.
1.2 ÷ 0.3 =
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 8
_____

Answer:
1.2 ÷ 0.3 = 4

Explanation:
There are 4 groups of 3 tenths.
So, 1.2 ÷ 0.3 = 4

Question 2.
0.45 ÷ 0.09 =
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 9
_____

Answer:
0.45 ÷ 0.09 = 5

Explanation:
There are 5 groups. Each group has 9 hundredths.
0.09 x 5 = 0.45
So, 0.45 ÷ 0.09 = 5

Question 3.
0.96 ÷ 0.24 =
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 10
_____

Answer:
0.96 ÷ 0.24 = 4

Explanation:
There are 4 groups. Each group has 2 tenths and 4 hundredths. 24 hundredths
0.24 x 4 = 0.96
0.96 ÷ 0.24 = 4

Question 4.
1 ÷ 0.5 =
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 11
_____

Answer:
2

Explanation:
There are 2 groups. Each group has 5 tenths.
0.5 x 2 = 1.0 = 1
1 ÷ 0.5 = 2

Divide. Use decimal models.

Question 5.
1.8 ÷ 0.6 =
_____

Answer:
3

Explanation:
1.8
There are 1 one(s) and 8 tenth(s).
Cut 1.8 to show groups of 0.6.
There are 3 groups of 1.8 tenths.
1.8 ÷ 0.6 = 3

Question 6.
1.2 ÷ 0.3 =
_____

Answer:
4

Explanation:
1.2
There are 1 one(s) and 2 tenth(s).
Cut 1.2 to show groups of 0.3.
There are 4 groups of 1.2 tenths.
1.2 ÷ 0.3 = 4

Question 7.
0.24 ÷ 0.04 =
_____

Answer:
6

Explanation:
0.24
There are 0 one(s) and 2 tenth(s) and 4 hundredth(s).
Cut 0.24 to show groups of 0.04.
There are 6 groups of 0.04 hundredths.
0.24 ÷ 0.04 = 6

Question 8.
1.75 ÷ 0.35 =
_____

Answer:
5

Explanation:
1.75
There are 1 one(s) and 7 tenth(s) and 5 hundredth(s).
Cut 1.75 to show groups of 0.35.
There are 5 groups of 1.75 hundredths.
1.75 ÷ 0.35 = 5

Question 9.
2 ÷ 0.4 =
_____

Answer:
5

Explanation:
2
There are 2 one(s).
Cut 2 to show groups of 0.4.
There are 5 groups of 2 ones.
2 ÷ 0.4 = 5

Question 10.
2.7 ÷ 0.9 =
_____

Answer:
3

Explanation:
2.7
There are 2 one(s) and 7 tenth(s).
Cut 2.7 to show groups of 0.9.
There are 3 groups of 2.7 tenths.
2.7 ÷ 0.9 = 3

Question 11.
1.24 ÷ 0.62 =
_____

Answer:
2

Explanation:
1.24
There are 1 one(s), 2 tenth(s) and 4 hundredth(s).
Cut 1.24 to show groups of 0.62.
There are 2 groups of 1.24 hundredths.
1.24 ÷ 0.62 = 2

Question 12.
0.84 ÷ 0.14 =
_____

Answer:
6

Explanation:
0.84
There are 0 one(s), 8 tenth(s) and 4 hundredth(s).
Cut 0.84 to show groups of 0.14.
There are 6 groups of 0.84 hundredths.
0.84 ÷ 0.14 = 6

Question 13.
1.6 ÷ 0.4 =
_____

Answer:
4

Explanation:
1.6
There are 1 one(s) and 6 tenth(s).
Cut 1.6 to show groups of 0.4.
There are 4 groups of 1.6 tenths.
1.6 ÷ 0.4 = 4

Use the model to find the unknown value.

Question 14.
2.4 ÷ □ = 3
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 12
_____

Answer:
0.8

Explanation:
2.4 ÷ □ = 3
There are 3 groups with 8 tenths in each group.
So, 2.4 ÷ 0.8 = 3
The unknown number is 0.8

Question 15.
□ ÷ 0.32 = 4
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 13
_____

Answer:
1.28

Explanation:
□ ÷ 0.32 = 4
There are 4 groups with 32 hundredths in each group.
So, 0.32 x 4 = 1.28
The unknown number is 1.28

Question 16.
Make a model to find 0.6 ÷ 0.15. Describe your model.
_____

Answer:
0.6 ÷ 0.15
Divide 6 tenths into 15 hundredths each group.
15 hundredths + 15 hundredths + 15 hundredths + 15 hundredths
4 groups.
0.6 ÷ 0.15 = 4

Question 17.
Explain, using the model, what the equation represents in Exercise 15.
Type below:
_________

Answer:
Using the decimal model, we have to find the value of 0.6 ÷ 0.15
0.6 ÷ 0.15 = 4

Problem Solving – Page No. 222

Pose a Problem
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 14

Question 18.
Emilio buys 1.2 kilograms of grapes. He separates the grapes into packages that contain 0.3 kilogram of grapes each. How many packages of grapes does Emilio make?
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 15
1.2 ÷ 0.3 = 4
Emilio made 4 packages of grapes.
Write a new problem using a different amount for the weight in each package. The amount should be a decimal with tenths. Use a total amount of 1.5 kilograms of grapes. Then use decimal models to solve your problem.
Pose a problem.                          Solve your problem. Draw a picture of the
model you used to solve your problem.
• Explain why you chose the amount you did for your problem.
Type below:
_________

Answer:
Emilio buys 1.5 kilograms of grapes. He separates the grapes into packages that contain 0.5 kilogram of grapes each.
1.5/0.5 = 3
3 groups

Share and Show – Page No. 225

Copy and complete the pattern.

Question 1.
45 ÷ 9 = _____
4.5 ÷ _____ = 5
_____ ÷ 0.09 = 5

Answer:
45 ÷ 9 = 5
4.5 ÷ 0.9 = 5
0.45 ÷ 0.09 = 5

Explanation:
45 ÷ 9 = 5
4.5 ÷ _____ = 5
45 ÷ 10 = 4.5. So, 9 ÷ 10 = 0.9
4.5 ÷ 0.9 = 5
_____ ÷ 0.09 = 5
0.9 ÷ 10 = 0.09
4.5 ÷ 10 = 0.45
0.45 ÷ 0.09 = 5

Go Math Grade 5 Chapter 5 Test Question 2.
175 ÷ 25 = _____
17.5 ÷ _____ = 7
_____ ÷ 0.25 = 7

Answer:
175 ÷ 25 = 7
17.5 ÷ 2.5 = 7
1.75 ÷ 0.25 = 7

Explanation:
175 ÷ 25 = 7
17.5 ÷ _____ = 7
175 ÷ 10 = 17.5. So, 25 ÷ 10 = 2.5
17.5 ÷ 2.5 = 7
_____ ÷ 0.25 = 7
2.5 ÷ 10 = 0.25
17.5 ÷ 10 = 1.75
1.75 ÷ 0.25 = 7

Question 3.
164 ÷ 2 = _____
16.4 ÷ _____ = 82
_____ ÷ 0.02 = 82

Answer:
164 ÷ 2 = 82
16.4 ÷ 0.2 = 82
1.64 ÷ 0.02 = 82

Explanation:
164 ÷ 2 = 82
16.4 ÷ _____ = 82
164 ÷ 10 = 16.4
2 ÷ 10 = 0.2
16.4 ÷ 0.2 = 82
_____ ÷ 0.02 = 82
0.2 ÷ 10 = 0.02
16.4 ÷ 10 = 1.64
1.64 ÷ 0.02 = 82

Divide.

Question 4.
1.6)\(\overline { 9.6 }\) = _____

Answer:
6

Explanation:
9.6 ÷ 1.6
9.6 x 10 = 96
1.6 x 10 = 16
96 ÷ 16 = 6
So, 9.6 ÷ 1.6 = 6

Question 5.
0.3)\(\overline { 0.24 }\) = _____

Answer:
0.8

Explanation:
0.24 ÷ 0.3
0.24 x 10 = 2.4
0.3 x 10 = 3
2.4 ÷ 3 = 0.8
0.24 ÷ 0.3 = 0.8

Question 6.
3.45 ÷ 1.5 = _____

Answer:
2.3

Explanation:
3.45 ÷ 1.5
3.45 x 10 = 34.5
1.5 x 10 = 15
34.5 ÷ 15 = 2.3
3.45 ÷ 1.5 = 2.3

On Your Own

Divide.

Question 7.
0.6)\(\overline { 13.2 }\) = _____

Answer:
22

Explanation:
13.2 ÷ 0.6
13.2 x 10 = 132
0.6 x 10 = 6
132 ÷ 6 = 22
13.2 ÷ 0.6 = 22

Question 8.
0.3)\(\overline { 0.9 }\) = _____

Answer:
3

Explanation:
0.9 ÷ 0.3
0.9 x 10 = 9
0.3 x 10 = 3
9 ÷ 3 = 3
0.9 ÷ 0.3 = 3

Go Math Chapter 5 Review Test 5th Grade Question 9.
0.26)\(\overline { 1.56 }\) = _____

Answer:
6

Explanation:
1.56 ÷ 0.26
1.56 x 100 = 156
0.26 x 100 = 26
156 ÷ 26 = 6
1.56 ÷ 0.26 = 6

Question 10.
0.45)\(\overline { 5.85 }\) = _____

Answer:
13

Explanation:
5.85 ÷ 0.45
5.85 x 100 = 585
0.45 x 100 = 45
585 ÷ 45 = 13

Question 11.
0.3)\(\overline { 0.69 }\) = _____

Answer:
2.3

Explanation:
0.69 ÷ 0.3
0.69 x 10 = 6.9
0.3 x 10 = 3
6.9 ÷ 3 = 2.3

Question 12.
3.6 ÷ 0.4 = _____

Answer:
9

Explanation:
3.6 ÷ 0.4
3.6 x 10 = 36
0.4 x 10 = 4
36 ÷ 4 = 9
3.6 ÷ 0.4 = 9

Question 13.
1.26 ÷ 2.1 = _____

Answer:
0.6

Explanation:
1.26 ÷ 2.1
1.26 x 10 = 12.6
2.1 x 10 = 21
12.6 ÷ 21 = 0.6

Question 14.
7.84 ÷ 0.28 = _____

Answer:
28

Explanation:
7.84 ÷ 0.28
7.84 x 100 = 784
0.28 x 100 = 28
784 ÷ 28 = 28
7.84 ÷ 0.28 = 28

Question 15.
9.28 ÷ 2.9 = _____

Answer:
3.2

Explanation:
9.28 ÷ 2.9
9.28 x 10 = 92.8
2.9 x 10 = 29
92.8 ÷ 29 = 3.2
9.28 ÷ 2.9 = 3.2

Problem Solving – Page No. 226

Use the table to solve 16—19.
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 16

Question 16.
Connie paid $1.08 for pencils. How many pencils did she buy?
_____ pencils

Answer:
9 pencils

Explanation:
1 pencil = $0.12
Connie paid $1.08 for pencils.
$1.08 ÷ $0.12 = 9
she buys 9 pencils

Question 17.
Albert has $2.16. How many more pencils can he buy than markers?
_____

Answer:
Albert can buy 12 more pencils than markers

Explanation:
Albert has $2.16.
1 pencil = $0.12
$2.16/$0.12 = 18 pencils
1 marker = $0.36
$2.16/$0.36 = 6 markers
18 – 6 = 12 more pencils

Question 18.
How many erasers can Ayita buy for the same amount that she would pay for one notepad?
_____ erasers

Answer:
Ayita can buy 13 erasers with one notepad of money.

Explanation:
1 notepad = $0.65
$0.65/$0.05 = 13
Ayita can buy 13 erasers with one notepad of money.

Question 19.
Ramon paid $3.25 for notepads and $1.44 for markers. What is the total number of items he bought?
_____ items

Answer:
9 items

Explanation:
Ramon paid $3.25 for notepads.
$3.25/$0.65 = 5
He paid $1.44 for markers
$1.44/$0.36 = 4
5 + 4 = 9
He bought 9 items

Question 20.
What’s the Error? Katie divided 4.25 by 0.25 and got a quotient of 0.17.
_____

Answer:
Katie divided 4.25 by 0.25
4.25 ÷ 0.25
4.25 x 100 = 425
0.25 x 100 = 25
425 ÷ 25 = 17
4.25 ÷ 0.25 = 17
But he said 0.17

Go Math Grade 5 Chapter 5 Review Question 21.
Test Prep Marcus bought apples that cost $0.45 per pound. He paid $1.35 for the apples. How many pounds of apples did he buy?
Options:
a. 0.3 pound
b. 2.8 pounds
c. 3 pounds
d. 30 pounds

Answer:
c. 3 pounds

Explanation:
Marcus bought apples that cost $0.45 per pound.
He paid $1.35 for the apples.
$1.35 ÷ $0.45 = 3 pounds

Share and Show – Page No. 229

Write the quotient with the decimal point placed correctly.

Question 1.
5 ÷ 0.8 = 625
_____

Answer:
5 ÷ 0.8 = 6.25

Explanation:
5 ÷ 0.8 = 5 ÷ 0.800
50 ÷ 8 = 6.25
Divide 5 ÷ 0.8 until you get the remainder 0
Divide: 50 ÷ 8 = 6
8 x 6 = 48; Subtract: 50 – 48 = 2
Divide: 20 ÷ 8 = 2;
Subtract: 20 – 16 = 4
Divide: 40 ÷ 8 = 5
8 x 5 = 40; Subtract: 40 – 40 = 0
So, 6.25

Question 2.
26.1 ÷ 6 = 435
_____

Answer:

Explanation:
26.1 ÷ 6 = 26.1 ÷ 6.0
261 ÷ 60.0
Divide 26.1 ÷ 6 until you get the remainder 0
Divide: 261 ÷ 60 = 4;
60 x 4 = 240 Subtract: 261 – 240 = 21
Divide: 210 ÷ 60 = 3
60 x 3 = 180; Subtract: 210 – 180 = 30
Divide: 300 ÷ 60 = 5;
60 x 5 = 300; Subtract: 300 – 300 = 0
261 ÷ 60 = 4.35

Question 3.
0.42 ÷ 0.35 = 12
_____

Answer:
1.2

Explanation:
0.42 ÷ 0.35 = 42 ÷ 35
Divide 0.42 ÷ 0.35 until you get remainder 0
Divide: 42 ÷ 35 = 1;
35 x 1 = 35 Subtract: 42 – 35 = 7
Divide: 70 ÷ 35 = 2
35 x 2 = 70; Subtract: 70 – 70 = 0
0.42 ÷ 0.35 = 1.2

Question 4.
80 ÷ 50 = 16
_____

Answer:
1.6

Explanation:
80 ÷ 50
8 ÷ 5
Divide 8 ÷ 5
5 x 1 = 5 : Subtract: 8 – 5 = 3
Divide 30 ÷ 5 = 6
80 ÷ 50 = 1.6

Divide.

Question 5.
4)\(\overline { 32.6 }\) = _____

Answer:
8.15

Explanation:
32.6 ÷ 4
Divide: 32/4 = 8
8 x 4 = 32; Subtract: 32 – 32 = 0
Divide: 6/4 = 1
4 x 1 = 4; Subtract: 6 – 4 = 2
Add zero
20 ÷ 4 = 5
So, 8.15

Question 6.
1.2)\(\overline { 9 }\) = _____

Answer:
0.1333

Explanation:
1.2/9 = 12/90; 12 < 90
12 cannot be divided by 90. So add zero to 12.
120/90 = 1; 120 – 90 = 30; 30 < 90
300/90 = 3; 300 – 270 = 30
So, 0.13333

Question 7.
15)\(\overline { 42 }\) = _____

Answer:
2.8

Explanation:
42/15 = 2
15 x 2 = 30; 42 – 30 = 12
120/15 = 8;
So, 2.8

Go Math Grade 5 Chapter 5 Review/Test Answer Key Question 8.
0.14)\(\overline { 0.91 }\) = _____

Answer:
6.5

Explanation:
0.91/0.14 = 91/14
91/14 = 6
14 x 6 = 84; 91 – 84 = 7; 7 < 14
70/14 = 5
So, 6.5

On Your Own

Divide.

Question 9.
8)\(\overline { 84 }\) = _____

Answer:
10.5

Explanation:
84/8 = 10
8 x 10 = 80; 84 – 80 = 4;4 < 8
40/8 = 5
So, 10.5

Question 10.
2.5)\(\overline { 4 }\) = _____

Answer:

Explanation:
4/2.5 = 40/25
40/25 = 1;
40 – 25 = 15; 15 < 25
150/25 = 6
So, 1.6

Question 11.
5)\(\overline { 16.2 }\) = _____

Answer:
3.24

Explanation:
16.2/5 = 162/50
162/50 = 3
50 x 3 = 150; 162 – 150 = 12; 12 < 50
120/50 = 2
50 x 2 = 100; 120 – 100 = 20; 20 < 50
200/50 = 4
So, 3.24

Question 12.
0.6)\(\overline { 2.7 }\) = _____

Answer:
4.5

Explanation:
2.7/0.6 = 27/6
27/6 = 4
4 x 6 = 24; 27 – 24 = 3; 3 < 6
30/6 = 5
So, 4.5

Question 13.
18 ÷ 7.5 = _____

Answer:
2.4

Explanation:
18/7.5 = 180/75
180/75 = 2
75 x 2 = 150; 180 – 150 = 30; 30 < 75
300/75 = 4
So, 2.4

Question 14.
34.8 ÷ 24 = _____

Answer:
1.45

Explanation:
34.8/24 = 348/240
348/240 = 1;
240 x 1 = 240; 348 – 240 = 108 < 240
1080/240 = 4
240 x 4 = 960; 1080 – 960 = 120; 120 < 240
1200/240 = 5
So, 1.45

Question 15.
5.16 ÷ 0.24 = _____

Answer:
21.5

Explanation:
5.16/0.24 = 516/24
516/24 = 21
24 x 21 = 504: 516 – 504 = 12; 12 < 24
120/24 = 5;
So, 21.5

Question 16.
81 ÷ 18 = _____

Answer:
4.5

Explanation:
81/18 = 4
18 x 4 = 72; 81 – 72 = 9; 9 < 18
90/18 = 5
4.5

Practice: Copy and Solve Divide.

Question 17.
1.6)\(\overline { 20 }\) = _____

Answer:
12.5

Explanation:
20/1.6 = 200/16
200/16 = 12
16 x 12 = 192; 200 – 192 = 8; 8 < 16
80/16 = 5;
12.5

Question 18.
15)\(\overline { 4.8 }\) = _____

Answer:
0.32

Explanation:
4.8/15 = 48/150; 48 < 150
480/150 = 3
150 x 3 = 450; 480 – 450 = 30 < 150
300/150 = 2
0.32

Chapter 5 Review Test Go Math 5th Grade Answer Key Question 19.
0.54)\(\overline { 2.43 }\) = _____

Answer:
4.5

Explanation:
2.43/0.54 = 243/54
243/54 = 4
54 x 4 = 216; 243 – 216 = 27 < 54
270/54 = 5
4.5

Question 20.
28)\(\overline { 98 }\) = _____

Answer:
3.5

Explanation:
98/28 = 3
28 x 3 = 84; 98 – 84 = 14 < 28
140/28 = 5
3.5

Question 21.
1.8 ÷ 12 = _____

Answer:
0.15

Explanation:
1.8/12 = 18/120; 18 < 120
180/120 = 1;
120 x 1 = 120; 180 – 120 = 60; 60 < 120
600/120 = 5
0.15

Question 22.
3.5 ÷ 2.5 = _____

Answer:
1.4

Explanation:
3.5/2.5 = 35/25
35/25 = 1;
25 x 1 = 25; 35 – 25 = 10; 10 < 25
100/25 = 4
1.4

Question 23.
40 ÷ 16 = _____

Answer:
2.5

Explanation:
40/16 = 2
16 x 2 = 32; 40 – 32 = 8 < 16
80/16 = 5
2.5

Question 24.
2.24 ÷ 0.35 = _____

Answer:
6.4

Explanation:
2.24/0.35 = 224/35
224/35 = 6
35 x 6 = 210; 224 – 210 = 14 < 35
140/35 = 4
6.4

Problem Solving – Page No. 230

Solve.

Question 25.
Jerry takes trail mix on hikes. A package of dried apricots weighs 25.5 ounces. Jerry divides the apricots equally among 6 bags of trail mix. How many ounces of apricots are in each bag?
_____ ounces

Answer:
4.25 ounces

Explanation:
Jerry takes trail mix on hikes. A package of dried apricots weighs 25.5 ounces. Jerry divides the apricots equally among 6 bags of trail mix.
25.5/6 = 4.25 ounces

Question 26.
Amy has 3 pounds of raisins. She divides the raisins equally into 12 bags. How many pounds of raisins are in each bag? Tell how many zeros you had to write at the end of the dividend.
_____ pound

Answer:
4 pound

Explanation:
Amy has 3 pounds of raisins. She divides the raisins equally into 12 bags.
12/3 = 4 pound. There are no zeros required at the end of the dividend.

Question 27.
Find 65 ÷ 4. Write your answer using a remainder, a fraction, and a decimal. Then tell which form of the answer you prefer. Explain your choice.
Type below:
_________

Answer:
65 ÷ 4 = 16 and 1 remainder.
Fraction = 65/4
65/4 = 16.25
The decimal answer is best to choose as there are no mathematical operations required.

Question 28.
Test Prep Todd has a piece of rope that is 1.6 meters long. He cuts the rope into 5 equal pieces. What is the length of each piece?
Options:
a. 0.8 meter
b. 0.32 meter
c. 3.2 meters
d. 8 meters

Answer:
b. 0.32 meter

Explanation:
Todd has a piece of rope that is 1.6 meters long. He cuts the rope into 5 equal pieces.
1.6/5 = 0.32 meter

Connect to Science

Rate of Speed Formula

The formula for velocity, or rate of speed, is r = d ÷ t, where r represents rate of speed, d represents distance, and t represents time. For example, if an object travels 12 feet in 10 seconds, you can find its rate of speed by using the formula.
r = d ÷ t
r = 12 ÷ 10
r = 1.2 feet per second
Use division and the formula for rate of speed to solve.
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals img 17

Question 29.
A car travels 168 miles in 3.2 hours. Find the car’s rate of speed in miles per hour.
_____ miles per hour

Answer:
52.5 miles per hour

Explanation:
168/3.2 = 52.5 miles per hour

Question 30.
A submarine travels 90 kilometers in 4 hours. Find the submarine’s rate of speed in kilometers per hour.
_____ kilometers per hour

Answer:
22.5 kilometers per hour

Explanation:
A submarine travels 90 kilometers in 4 hours.
For an hour, 90/4 = 22.5 kilometers per hour

Share and Show – Page No. 233

Question 1.
Hector spent $36.75 for 2 DVDs with the same cost. The sales tax was $2.15. Hector also used a coupon for $1.00 off his purchase. How much did each DVD cost?
First, make a flowchart to show the information and show how you would work backward.
Type below:
_________

Answer:
grade 5 Chapter 5 Divide Decimals 232 image 1
Question 1.
Then, work backward to find the cost of 2 DVDs.
Type below:
_________

Answer:
Price of the DVD is s
2s + $2.15 – $1.00 = $36.75
2s = $35.60

Question 1.
Finally, find the cost of one DVD.
So, each DVD costs ________ .
$ _____

Answer:
2s = $35.60
s = $35.60/2
s = $17.8

Question 2.
What if Hector spent $40.15 for the DVDs, the sales tax was $2.55, and he didn’t have a coupon? How much would each DVD cost?
$ _____

Answer:

Explanation:
If Hector spent $40.15 for the DVDs. The sales tax was $2.55, and he didn’t have a coupon
Price of the DVD is s
2s + $2.55 = $40.15
2s = $37.60
s = $18.8
Each DVD price =$18.8

Lesson 8 Divide Decimals by Decimals Answer Key Question 3.
Sophia spent $7.30 on school supplies. She spent $3.00 for a notebook and $1.75 for a pen. She also bought 3 large erasers. If each eraser had the same cost, how much did she spend for each eraser?
$ _____

Answer:
$0.85

Explanation:
Sophia spent $7.30 for school supplies. She spent $3.00 for a notebook and $1.75 for a pen.
$3.00 + $1.75 = $4.75
$7.30 – $4.75 = $2.55
If she bought 3 erasers, $2.55/3 = $0.85
Each eraser cost = $0.85

On Your Own – Page No. 234

Question 4.
The change from a gift purchase was $3.90. Each of 6 students donated an equal amount for the gift. How much change should each student receive?
$ _____

Answer:
$0.65

Explanation:
The change from a gift purchase was $3.90. Each of the 6 students donated an equal amount for the gift.
$3.90/6 = $0.65

Question 5.
If you divide this mystery number by 4, add 8, and multiply by 3, you get 42. What is the mystery number?
_____

Answer:
24

Explanation:
Let the unknown number = s.
(s/4 + 8) x 3 = 42
s/4 + 8 = 42/3
s/4 + 8 = 14
s/4 = 6
s = 6 x 4 = 24
s = 24

Question 6.
A mail truck picks up two boxes of mail from the post office. The total weight of the boxes is 32 pounds. One box is 8 pounds heavier than the other box. How much does each box weigh?
Type below:
_________

Answer:
20 pounds.
other box = 12 pounds

Explanation:
If one box weight is s, the other box weight is 8 pounds heavier than the other box. s – 8.
Total weight of two boxes =32
s + s – 8 = 32
2s = 40
s = 20

Question 7.
Stacy buys 3 CDs in a set for $29.98. She saved $6.44 by buying the set instead of buying the individual CDs. If each CD costs the same amount, how much does each of the 3 CDs cost when purchased individually?
$ _____

Answer:
$12.14

Explanation:
Stacy buys 3 CDs in a set for $29.98. She saved $6.44 by buying the set instead of buying the individual CDs.
Cost to buy 3 CDs = $29.98 + $6.44 = $36.42
$36.42/3 = $12.14

Question 8.
A school cafeteria sold 1,280 slices of pizza the first week, 640 the second week, and 320 the third week. If this pattern continues, in what week will the cafeteria sell 40 slices? Explain how you got your answer.
_____ th week

Answer:
sixth week

Explanation:
A school cafeteria sold 1,280 slices of pizza the first week, 640 the second week, and 320 the third week.
1280, 640, 320
1280/2 = 640
640/2 = 320
320/2 = 160
160/2 = 80
80/2 = 40
6th term shows 40. So, the answer is the sixth week.

Question 9.
Test Prep While working at the school store, John sold a jacket for $40.00 and notebooks for $1.50 each. If he collected $92.50, how many notebooks did he sell?
Options:
a. 3.5
b. 6.1
c. 35
d. 61

Answer:
c. 35

Explanation:
John sold a jacket for $40.00 and notebooks for $1.50 each.
$40 + $1.50S = $92.50
$1.50S = $52.5
S = $52.5/$1.50 = 35

Chapter Review/Test – Page No. 235

Concepts and Skills

Complete the pattern.

Question 1.
341 ÷ 1 = ________
341 ÷ 10 = ________
341 ÷ 100 = ________
341 ÷ 1,000 = ________

Answer:
341 ÷ 1 = 341
341 ÷ 10 = 34.1
341 ÷ 100 = 3.41
341 ÷ 1,000 = 0.341

Explanation:
341 ÷ 1 = 341
341 ÷ 10 = 34.1
341 ÷ 100 = 3.41
341 ÷ 1,000 = 0.341

Question 2.
15 ÷ 1 = ________
15 ÷ 10 = ________
15 ÷ 100 = ________
15 ÷ 1,000 = ________

Answer:
15 ÷ 1 = 15
15 ÷ 10 = 1.5
15 ÷ 100 = 0.15
15 ÷ 1,000 = 0.015

Explanation:
15 ÷ 1 = 15
15 ÷ 10 = 1.5
15 ÷ 100 = 0.15
15 ÷ 1,000 = 0.015

Question 3.
68.2 ÷ 100 = ________
68.2 ÷ 101 = ________
68.2 ÷ 102 = ________

Answer:
68.2 ÷ 100 = 68.2
68.2 ÷ 101 = 6.82
68.2 ÷ 102 = 0.682

Explanation:
68.2 ÷ 100 = 68.2 ÷ 1 = 68.2
68.2 ÷ 101 = 68.2 ÷ 10 = 6.82
68.2 ÷ 102 = 68.2 ÷ 100 = 0.682

Estimate the quotient.

Question 4.
49.3 ÷ 6 = _____

Answer:
About 8

Explanation:
49.3 is closer to 48
48 ÷ 6 = 8

Question 5.
3.5 ÷ 4 = _____

Answer:
about 1

Explanation:
3.5 is closer to 4
4 ÷ 4 = 1

Question 6.
396.5 ÷ 18 = _____

Answer:
About 22

Explanation:
396.5 is closer to 396
396 ÷ 18 = 22

Divide.

Question 7.
6)\(\overline { 3.24 }\) = _____

Answer:
0.54

Explanation:
3.24 ÷ 6
Divide. 3 ones ÷ 6
3 one(s) cannot be shared among 6 groups without regrouping.
30 + 2 = 32 tenths
Divide. 32 tenths ÷ 6
Multiply. 6 x 5 tenths = 30 tenths. Subtract. 32 tenths − 30 tenths = 2 tenths
Check. 30 tenths shared among 6 groups as 5 tenths.
2 tenths(s) cannot be shared among 6 groups without regrouping.
1 tenth = 10 hundredths.
20 + 4 = 24 hundredths
Divide. 24 hundredths ÷ 6
Multiply. 6 x 4 hundredths = 24 hundredths. Subtract. 24 hundredths − 24 hundredths = 0 hundredths
Check. 24 hundredths shared among 6 groups as 4 hundredths.
So, 0.54

Question 8.
5)\(\overline { 6.55 }\) = _____

Answer:
1.51

Explanation:
6.55 ÷ 5
Divide. 6 ones ÷ 5
Multiply. 5 × 1 ones = 5 ones. Subtract. 6 ones − 5 ones = 1 ones
Check. 5 ones shared among 5 groups as 1 whole.
1 one(s) cannot be shared among 5 groups without regrouping.
10 + 5 = 15 tenths
Divide. 15 tenths ÷ 5
Multiply. 5 x 3 tenths = 15 tenths. Subtract. 15 tenths − 15 tenths = 0 tenths
Check. 35 tenths shared among 5 groups as 3 tenths.
Divide. 5 hundredths ÷ 5
Multiply. 5 x 1 hundredths = 5 hundredths. Subtract. 5 hundredths − 5 hundredths = 0 hundredths
Check. 5 hundredths shared among 5 groups as 1 hundredth.
So, 1.51

Question 9.
26)\(\overline { 96.2 }\) = _____

Answer:
3.7

Explanation:
96.2 ÷ 26
Divide. 96 ones ÷ 26
Multiply. 26 × 3 ones = 78 ones. Subtract. 96 ones − 78 ones = 18 ones
Check. 78 ones shared among 26 groups as 3 wholes.
18 one(s) cannot be shared among 26 groups without regrouping.
180 + 2 = 182 tenths
Divide. 182 tenths ÷ 26
Multiply. 26 x 7 tenths = 182 tenths. Subtract. 182 tenths − 182 tenths = 0 tenths
So, 3.7

Question 10.
1.08 ÷ 0.4 = _____

Answer:
2.7

Explanation:
1.08 ÷ 0.4
1.08 x 10 = 10.8
0.4 x 10 = 4
10.8 ÷ 4 = 2.7

Question 11.
8.84 ÷ 0.68 = _____

Answer:
13

Explanation:
8.84 ÷ 0.68
8.84 x 100 = 884
0.68 x 100 = 68
884 ÷ 68 = 13

Question 12.
7.31 ÷ 1.7 = _____

Answer:
4.3

Explanation:
7.31 ÷ 1.7
7.31 x 10 = 73.1
1.7 x 10 = 17
73.1 ÷ 17 = 4.3

Question 13.
9.18 ÷ 0.9 = _____

Answer:
10.2

Explanation:
9.18 ÷ 0.9
9.18 x 10 = 91.8
0.9 x 10 = 9
91.8 ÷ 9 = 10.2

Question 14.
12.7 ÷ 5 = _____

Answer:
2.54

Explanation:
12.7 ÷ 5
12.7 x 10 = 127
5 x 10 = 50
127 ÷ 50 = 2.54

Question 15.
8.33 ÷ 0.34 = _____

Answer:
24.5

Explanation:
8.33 ÷ 0.34
8.33 x 100 = 833
0.34 x 100 = 34
833 ÷ 34 = 24.5

Chapter Review/Test – Page No. 236

Fill in the bubble completely to show your answer.

Question 16.
The Orchard Pie Company uses 95 pounds of apples to make 100 pies. Each pie contains the same amount of apples. How many pounds of apples are used in each pie?
Options:
A. 0.095 pound
B. 0.95 pound
C. 9.5 pounds
D. 95 pounds

Answer:
B. 0.95 pound

Explanation:
The Orchard Pie Company uses 95 pounds of apples to make 100 pies. Each pie contains the same amount of apples.
95/100 = 0.95 pounds

Question 17.
During a special sale, all CDs have the same price. Mr. Ortiz pays $228.85 for 23 CDs. Which is the best estimate of the price of each CD?
Options:
A. $9
B. $10
C. $12
D. $13

Answer:
B. $10

Explanation:
During a special sale, all CDs have the same price. Mr. Ortiz pays $228.85 for 23 CDs.
$228.85/23 = $9.95

Question 18.
Ryan earns $20.16 working for 3 hours. How much does he earn per hour?
Options:
A. $60.48
B. $6.82
C. $6.72
D. $6.71

Answer:
C. $6.72

Explanation:
Ryan earns $20.16 working for 3 hours.
$20.16/3 = $6.72

Question 19.
Anna hikes 6.4 miles during a 4-day vacation. If she hikes the same distance each day, how many miles does she hike each day?
Options:
A. 1.06 miles
B. 1.1 miles
C. 1.4 miles
D. 1.6 miles

Answer:
D. 1.6 miles

Explanation:
Anna hikes 6.4 miles during a 4-day vacation. If she hikes the same distance each day, 6.4/4 = 1.6 miles

Chapter Review/Test – Page No. 237

Fill in the bubble completely to show your answer.

Question 20.
Karina pays $1.92 for pencil erasers. The erasers cost $0.08 each. How many erasers does she buy?
Options:
A. 2.4
B. 2.5
C. 24
D. 25

Answer:
C. 24

Explanation:
Karina pays $1.92 for pencil erasers. The erasers cost $0.08 each.
$1.92/$0.08 = 24

Question 21.
Wyatt has 25.4 ounces of fruit juice. He divides the juice equally into 4 glasses. How much juice is in each glass?
Options:
A. 6 ounces
B. 6.35 ounces
C. 6.4 ounces
D. 6.45 ounces

Answer:
B. 6.35 ounces

Explanation:
Wyatt has 25.4 ounces of fruit juice. He divides the juice equally into 4 glasses.
25.4/4 = 6.35 ounces

Question 22.
Jacob walks 70.4 feet in 0.2 hour. If he walks at the same rate the whole time, what is his speed in feet per hour?
Options:
A. 352 feet per hour
B. 140.8 feet per hour
C. 35.2 feet per hour
D. 14.08 feet per hour

Answer:
A. 352 feet per hour

Explanation:
Jacob walks 70.4 feet in 0.2 hour. If he walks at the same rate the whole time,
7.4/0.2 = 352 feet per hour

Question 23.
Meghan earns $20.00 by walking dogs. She uses all of her earnings to buy a shirt for $12.85 and some stickers for $0.65 each. How many stickers does she buy?
Options:
A. 4.65
B. 11
C. 46
D. 110

Answer:
B. 11

Explanation:
Meghan earns $20.00 by walking dogs. She uses all of her earnings to buy a shirt for $12.85 and some stickers for $0.65 each.
$20 – $12.85 = $7.15
$7.15/$0.65 = 11

Chapter Review/Test – Page No. 238

Constructed Response

Question 24.
Percy buys tomatoes that cost $0.58 per pound. He pays $2.03 for the tomatoes. How many pounds of tomatoes does he buy? Show your work using words, pictures, or numbers. Explain how you know your answer is reasonable.
_____ pounds

Answer:
3.5 pounds

Explanation:
Percy buys tomatoes that cost $0.58 per pound. He pays $2.03 for the tomatoes.
$2.03/$0.58
200/50 = 4; Using Compitable numbers
Multiply the divisor by a power of 10 to make it a whole number. Then, multiply the dividend by the same power of 10.
0.58 x 100 = 58
2.03 x 100 = 203
203/58
Divide until you have an amour less than the divisor left over.
Insert a decimal point and a zero at the end of the dividend.
Place a decimal point in the quotient above the decimal point in the dividend.
203/58 = 3.5 pounds

Performance Task

Question 25.
Isabella is buying art supplies. The table at the right shows the prices of the items she wants to buy.
A Isabella spends $2.25 on poster boards. How many poster boards does she buy?
Go Math Grade 5 Answer Key Chapter 5 Divide Decimals Chapter Review/Test img 18
_____ posters

Answer:
3 posters

Explanation:
1 Poster Board = $0.75.
Isabella spends $2.25 on poster boards.
$2.25/$0.75 = 3

Question 25.
B Isabella spends $4.87 on paintbrushes and paint. How many of each item does she buy? Explain how you found your answer.
_______ paint brushes
_______ jars of paint

Answer:
2 paint brushes
3 jars of paint

Explanation:
paintbrushes = $0.95
Paint = $0.99
If she buys 2 paint brushes and 2 paints, she spent $1.9 for paintbrushes and $1.98 for 2 paints. The remaining amount is $0.99. So, she can buy one more paint with them. So, she can buy 2 paint brushes and 3 jars of paint.

Question 25.
C. Isabella spends less than $14.00 for glass beads, paintbrushes, poster board, and paint. She spends $1.68 on beads and $3.96 on paint. She buys more than 3 poster boards and more than 3 paintbrushes. Find how many ounces of glass beads and how many jars of paint she buys. Then, suggest the number of poster boards and paintbrushes she might buy for the total spent.
Type below:
_________

Answer:
Isabella spends less than $14.00 for glass beads, paintbrushes, poster board, and paint.
She spends $1.68 on beads and $3.96 on paint.
Each beads = $0.28
$1.68/$0.28 = 6 beads
Each paint = $0.99
$3.96/$0.99 = 4 paints
$14 – ($1.68 + $3.96) = $8.36.
So, $8.36 needs to spend on more than 3 poster boards and more than 3 paintbrushes.
So, Each poster board = $0.75
paintbrushes = $0.95
If she buys more than 3, 3 x $0.75 = $2.25
$0.95 x 3 = $2.85
$2.25 + $2.85 = $5.1
So, $8.36 – $5.1 = $3.26
If $0.75 x 3 = $2.25
$0.95 x 1 = $0.95
$2.25 + $0.95 = 3.2
So, she can buy 3 + 3 = 6 poster boards
and 3 + 1 = 4 paintbrushes.

Conclusion:

Free PDF of Go Math Grade 5 Answer Key Chapter 5 Divide Decimals is available here. Learn the easy tricks and tips to solve Grade 5 practice questions. Practice Books and questions are provided along with the explanations. Refer to Go Math Grade 5 Divide Decimals Answer Key for free.

Go Math Grade 5 Chapter 5 Answer Key Pdf Divide Decimals Read More »

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Go Math Grade 5 Chapter 1 Answer Key Pdf Place Value, Multiplication, and Expressions

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Lesson 1: Investigate • Place Value and Patterns

Lesson 2: Place Value of Whole Numbers

Lesson 3: Algebra • Properties

Lesson 4: Algebra • Powers of 10 and Exponents

Lesson 5: Algebra • Multiplication Patterns

Mid-Chapter Checkpoint

Lesson 6: Multiply by 1-Digit Numbers

Lesson 7: Multiply by Multi-Digit Numbers

Lesson 8: Relate Multiplication to Division

Lesson 9: Problem Solving • Multiplication and Division

Lesson 10: Algebra • Numerical Expressions

Lesson 11: Algebra • Evaluate Numerical Expressions

Lesson 12: Algebra • Grouping Symbols

Review/Test

Place Value and Patterns – Share and Show – Page No. 7

Complete the sentence.

Question 1.
500 is 10 times as much as ______

Answer:
50

Explanation:
Let the unknown number is S.
500 = 10S
S = 500/10 = 50.
500 is 10 times as much as 50.

Question 2.
20,000 is \(\frac{1}{10}\) of ______

Answer:
2,00,000

Explanation:
Let the unknown number is S.
20,000 = \(\frac{1}{10}\) S
S = 20,000 X 10 = 2,00,000

Go Math 5th Grade Lesson 1.1 Homework Answers Question 3.
900 is \(\frac{1}{10}\) of ______

Answer:
9,000

Explanation:
Let the unknown number is S.
900 = \(\frac{1}{10}\) S
S = 900 X 10 = 9,000

Question 4.
600 is 10 times as much as ______

Answer:
60

Explanation:
Let the unknown number is S.
600 = 10S
S = 600/10 = 60.

Use place-value patterns to complete the table

Question 5.

Numbers 10 times as much as \(\frac{1}{10}\) of
10 ______ ______
3,000 ______ ______
800 ______ ______
50 ______ ______

Answer:

Numbers 10 times as much as \(\frac{1}{10}\) of
10 ___1___ ___100___
3,000 ___300___ ___30,000___
800 ___80___ ___8,000___
50 ___5___ ___500___

Explanation:
1. 10 is 10 times as much as ______
Let the unknown number is S.
10 = 10S
S = 10/10 = 1.
10 is 10 times as much as 1.
10 is \(\frac{1}{10}\) of ______
Let the unknown number is S.
10 = \(\frac{1}{10}\) S
S = 10 X 10 = 100.
2. 3,000 is 10 times as much as ______
Let the unknown number is S.
3,000 = 10S
S = 3,000/10 = 300.
3,000 is 10 times as much as 300.
3,000 is \(\frac{1}{10}\) of ______
Let the unknown number is S.
3,000 = \(\frac{1}{10}\) S
S = 3,000 X 10 = 30,000.
3. 800 is 10 times as much as ______
Let the unknown number is S.
800 = 10S
S = 800/10 = 80.
800 is 10 times as much as 80.
800 is \(\frac{1}{10}\) of ______
Let the unknown number is S.
800 = \(\frac{1}{10}\) S
S = 800 X 10 = 8,000.
4. 50 is 10 times as much as ______
Let the unknown number is S.
50 = 10S
S = 50/10 = 5.
50 is 10 times as much as 5.
50 is \(\frac{1}{10}\) of ______
Let the unknown number is S.
50 = \(\frac{1}{10}\) S
S = 50 X 10 = 500.

Question 6.

Numbers 10 times as much as \(\frac{1}{10}\) of
400 ______ ______
90 ______ ______
6,000 ______ ______
200 ______ ______

Answer:

Numbers 10 times as much as \(\frac{1}{10}\) of
400 __40____ ___4,000___
90 ___9___ ___900___
6,000 __600____ __60,000____
200 ___20___ ___2,000___

Explanation:
1. 400 is 10 times as much as ______
Let the unknown number is S.
400 = 10S
S = 400/10 = 40.
400 is 10 times as much as 40.
400 is \(\frac{1}{10}\) of ______
Let the unknown number is S.
400 = \(\frac{1}{10}\) S
S = 400 X 10 = 4,000.
2. 90 is 10 times as much as ______
Let the unknown number is S.
90 = 10S
S = 90/10 = 9.
90 is 10 times as much as 9.
90 is \(\frac{1}{10}\) of ______
Let the unknown number is S.
90 = \(\frac{1}{10}\) S
S = 90 X 10 = 900.
3. 6,000 is 10 times as much as ______
Let the unknown number is S.
6,000 = 10S
S = 6,000/10 = 600.
6,000 is 10 times as much as 600.
6,000 is \(\frac{1}{10}\) of ______
Let the unknown number is S.
6,000 = \(\frac{1}{10}\) S
S = 6,000 X 10 = 60,000.
4. 200 is 10 times as much as ______
Let the unknown number is S.
200 = 10S
S = 200/10 = 20.
200 is 10 times as much as 20.
200 is \(\frac{1}{10}\) of ______
Let the unknown number is S.
200 = \(\frac{1}{10}\) S
S = 200 X 10 = 2,000.

Complete the sentence with 100 or 1,000.

Question 13.
200 is ______ times as much as 2

Answer:
200 is 100 times as much as 2

Explanation:
Let the unknown number is S.
200 = 2S
S = 200/2 = 100

Math Expressions Grade 5 Pdf Answer Key Question 14.
4,000 is ______ times as much as 4

Answer:
4,000 is 1000 times as much as 4

Explanation:
Let the unknown number is S.
4,000 = 2S
S = 4,000/2 = 1,000

Question 15.
700,000 is ______ times as much as 700

Answer:
700,000 is 1,000 times as much as 700

Explanation:
Let the unknown number is S.
700,000 = 700S
S = 700,000/700 = 1,000

Question 16.
600 is ______ times as much as 6

Answer:
600 is 100 times as much as 6

Explanation:
Let the unknown number is S.
600 = 6S
S = 600/6= 100

Question 17.
50,000 is ______ times as much as 500

Answer:
50,000 is 100_ times as much as 500

Explanation:
Let the unknown number is S.
50,000 = 500S
S = 50,000/500= 100

Question 18.
30,000 is ______ times as much as 30

Answer:
30,000 is 1,000 times as much as 30

Explanation:
Let the unknown number is S.
30,000 = 30S
S = 30,000/30 = 1,000

Question 19.
Explain how you can use place-value patterns to describe how 50 and 5,000 compare.
Type below:
__________

Answer:
5,000 is 100 times as much as 50

Explanation:
5,000/50 = 100

Place Value and Patterns – Problem Solving – Page No. 8

Sense or Nonsense?

Question 20.
Mark and Robyn used base-ten blocks to show that 300 is 100 times as much as 3. Whose model makes sense? Whose model is nonsense? Explain your reasoning.
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Place Value and Patterns img 1
Type below:
__________

Answer:
Robyn’s model makes sense. Because the given data 300 is 100 times as much as 3. It clearly states that there are 100 model-blocks and one model blocks should take to solve the problem.

Question 20.
Explain how you would help Mark understand why he should have used small cubes instead of longs.
Type below:
__________

Answer:
Mark’s drew 100 model-blocks and 10 model-blocks which. To get 300 is 100 times as much as 3, he needs to do 300/3 = 100 model blocks.

Place Value of Whole Numbers – Share and Show – Page No. 11

Complete the place-value chart to find the value of each digit.

Question 1.
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Place Value of Whole Numbers img 2
Type below:
__________

Answer:
Grade 5 Chapter 1 Image 1
7,333,820

Explanation:
7 x 1,000,000 = 7,000,000
3 x 100,000 = 300,000
3 x 1,000 = 3000
8 x 100 = 800
2 x 10 = 20

Write the value of the underlined digit.

Question 2.
1,574,833
__________

Answer:
4,000

Explanation:
(1 x 1,000,000) + (5 x 1,00,000) + (7 x 10,000) + (4 x 1,000) + (8 x 100) + (3 x 10) + (3 x 1)
4 x 1,000 = 4 thousands = 4,000

Go Math 5th Grade Lesson 1.11 Homework Answers Question 3.
598,102
__________

Answer:
100

Explanation:
(5 x 1,00,000) + (9 x 10,000) + (8 x 1,000) + (1 x 100) + (0 x 10) + (2 x 1)
1 x 100 = 4 hundreds = 100

Question 4.
7,093,455
__________

Answer:
90,000

Explanation:
(7 x 1,000,000) + (0 x 1,00,000) + (9 x 10,000) + (3 x 1,000) + (4 x 100) + (5 x 10) + (5 x 1)
9 x 10,000 = 9 ten-thousands = 90,000

Question 5.
301,256,878
__________

Answer:
3,00,000,000

Explanation:
(3 x 1,00,000,000) + (0 x 10,000,000) + (1 x 1,000,000) + (2 x 1,00,000) + (5 x 10,000) + (6 x 1,000) + (8 x 100) + (7 x 10) + (8 x 1)
3 x 1,00,000,000 = 3 hundred- millions = 3,00,000,000

Write the number in two other forms.

Question 6.
(8 × 100,000) + (4 × 1,000) + (6 × 1) =
__________

Answer:
80,4006
Eight Hundred Four Thousand Six

Explanation:
(8 × 100,000) + (4 × 1,000) + (6 × 1) = 800,000 + 4,000 + 6 = 80,4006

Question 7.
seven million, twenty thousand, thirty-two
__________

Answer:
7,020,032
Seven Million Twenty Thousand Thirty-Two

Explanation:
seven million = 7,000,000
twenty thousand = 20,000
thirty-two = 32

On Your Own

Write the value of the underlined digit.

Question 8.
849,567,043
__________

Answer:
40,000,000

Explanation:
(8 x 1,00,000,000) + (4 x 10,000,000) + (9 x 1,000,000) + (5 x 1,00,000) + (6 x 10,000) + (7 x 1,000) + (0 x 100) + (4 x 10) + (3 x 1)
4 x 10,000,000 = 4 ten- millions = 40,000,000

Question 9.
9,422,850
__________

Answer:
4,00,000

Explanation:
(9 x 1,000,000) + (4 x 1,00,000) + (2 x 10,000) + (2 x 1,000) + (8 x 100) + (5 x 10) + (0 x 1)
4 x 1,00,000 = 4 Hundred Thousand = 4,00,000

Question 10.
96,283
__________

Answer:
90,000

Explanation:
(9 x 10,000) + (6 x 1,000) + (2 x 100) + (8 x 10) + (3 x 1)
9 x 10,000 = 9 ten-thousands = 90,000

Question 11.
498,354,021
__________

Answer:
4,00,000,000

Explanation:
(4 x 1,00,000,000) + (9 x 10,000,000) + (8 x 1,000,000) + (3 x 1,00,000) + (5 x 10,000) + (4 x 1,000) + (0 x 100) + (2 x 10) + (1 x 1)
4 x 1,00,000,000 = Four Hundred Million = 4,00,000,000

Lesson 1.1 Numerical Expressions Answer Key Question 12.
791,350
__________

Answer:
300

Explanation:
(7 x 1,00,000) + (9 x 10,000) + (1 x 1,000) + (3 x 100) + (5 x 10) + (0 x 1)
3 x 100 = 3 hundred = 300

Question 13.
27,911,534
__________

Answer:
7,000,000

Explanation:
(2 x 10,000,000) + (7 x 1,000,000) + (9 x 1,00,000) + (1 x 10,000) + (1 x 1,000) + (5 x 100) + (3 x 10) + (4 x 1)
7 x 1,000,000 = Seven Million = 7,000,000

Question 14.
105,980,774
__________

Answer:
80,000

Explanation:
(1 x 1,00,000,000) + (0 x 10,000,000) + (5 x 1,000,000) + (9 x 1,00,000) + (8 x 10,000) + (0 x 1,000) + (7 x 100) + (7 x 10) + (4 x 1)
8 x 10,000 = 8 ten-thousand = 80,000

Question 15.
8,265,178
__________

Answer:
5,000

Explanation:
(8 x 1,000,000) + (2 x 1,00,000) + (6 x 10,000) + (5 x 1,000) + (1 x 100) + (7 x 10) + (8 x 1)
5 x 1,000 = 5 one-thousand = 5,000

Write the number in two other forms.

Question 16.
345,000
Type below:
__________

Answer:
Three Hundred Forty-Five Thousand
(3 x 1,00,000) + (4 x 10,000) + (5 x 1,000) + (0 x 100) + (0 x 10) + (0 x 1)

Question 17.
119,000,003
Type below:
__________

Answer:
One Hundred Nineteen Million Three
(1 x 100,000,000) + (1 x 10,000,000) + (9 x 1,000,000) + (0 x 1,00,000) + (0 x 10,000) + (0 x 1,000) + (0 x 100) + (0 x 10) + (3 x 1)

Place Value of Whole Numbers – Problem Solving – Page No. 12

Use the table for 18–19.

Question 18.
Which planet is about 10 times as far as Earth is from the Sun?
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Place Value of Whole Numbers img 3
__________

Answer:
Saturn

Explanation:
Saturn = 1,427,000/10 = 142,700 which is 10 times as far as Earth

Question 19.
Which planet is about \(\frac{1}{10}\) of the distance Uranus is from the Sun?
__________

Answer:
Mars

Explanation:
Mars = 227,900
\(\frac{1}{10}\) x 2,871,000 = 287,100
Which planet is about \(\frac{1}{10}\) of the distance Uranus is from the Sun

Question 20.
What’s the Error? Matt wrote the number four million, three hundred five thousand, seven hundred sixty-two as 4,350,762. Describe and correct his error.
Type below:
__________

Answer:
Matt switched 2 digits in the thousands period: 4,305,762

Place Value And Patterns Lesson 1.1 Answers Question 21.
Explain how you know that the values of the digit 5 in the numbers 150,000 and 100,500 are not the same.
Type below:
__________

Answer:
In 150,000, the digit 5 is in the ten-thousands place, So, its value is 50,000; in 100,500, the digit 5 is in the hundreds place. So, its value is 500.

Question 22.
Test Prep In the number 869,653,214, which describes how the digit 6 in the ten-millions place compares to the digit 6 in the hundred-thousands place?
Options:
A. 10 times as much as
B. 100 times as much as
C. 1,000 times as much as
D.\(\frac{1}{10}\) of

Answer:
B. 100 times as much as

Explanation:
869,653,214
(8 x 100,000,000) + (6 x 10,000,000) + (9 x 1,000,000) + (6 x 1,00,000) + (5 x 10,000) + (3 x 1,000) + (2 x 100) + (1 x 10) + (4 x 1)
6 x 10,000,000 = 60,000,000
6 x 1,00,000 = 6,00,000
60,000,000/6,00,000 = 100

Properties – Share and Show – Page No. 15

Use properties to find 4 × 23 × 25.

Question 1.
23 × × 25 ________ Property of Multiplication
23 × ( × ) ________ Property of Multiplication
23 ×
__________
____

Answer:
23 x 4 x 25; Commutative Property of Multiplication
23 x (4 x 25); Associative Property of Multiplication
23 x 100
2,300

Use properties to find the sum or product.

Question 2.
89 + 27 + 11 = ____

Answer:
89 + (27 + 11); Associative Property of Addition
89 + 38
127

Question 3.
9 × 52 = ____

Answer:
468

Explanation:
9 x 52
Write 52 = (50 + 2)
9 x (50 + 2)
(9 x 50) + (9 x 2); Distributive Property of Multiplication
450 + 18
468

Question 4.
107 + 0 + 39 + 13 = ____

Answer:
107 + 0 + 39 + 13
(107 + 0) + (39 + 13); Associative Property of Addition
107 + 0 = 107; Identity Property of Addition
107 + 52 = 159

Complete the equation, and tell which property you used.

Question 5.
9 × (30 + 7) = (9 × ____) + (9 × 7)

Answer:
9 × (30 + 7) = (9 ×30) + (9 × 7)
Distributive Property of Multiplication

Explanation:
9 x (30 + 7)
(9 x 30) + (9 x 7); Distributive Property of Multiplication
270 + 63 = 333

Question 6.
0 + ____ = 47

Answer:
47; Identity Property of Addition

Explanation:
0 + 47 = 47; Identity Property of Addition

Question 6.
Describe how you can use properties to solve problems more easily.
Type below:
__________

Answer:
Using Properties of Addition and Properties of Multiplication, we can solve problems more easily. Simplifying problems is easy with the properties.

On Your Own

Practice: Copy and Solve Use properties to find the sum or product.

Question 7.
3 × 78 = ____

Answer:
234, Associative Property of Multiplication

Explanation:
Write 78 as 6 x 13
3 x 6 x 13
(3 x 6) x 13; Associative Property of Multiplication
18 x 13 = 234

Go Math Grade 5 Lesson 1.1 Question 8.
4 × 60 × 5 = ____

Answer:
1,200; Associative Property of Multiplication

Explanation:
4 x 60 x 5
4 x (60 x 5); Associative Property of Multiplication
4 x 300 = 1,200

Question 9.
21 + 25 + 39 + 5 = ____

Answer:
90; Associative Property of Addition

Explanation:
(21 + 25) + (39 + 5); Associative Property of Addition
46 + 44 = 90

Complete the equation, and tell which property you used.

Question 10.
11 + (19 + 6) = (11 + ____) + 6

Answer:
11 + (19 + 6) = (11 + 19) + 6; Associative Property of Addition

Question 11.
25 + 14 = ____ + 25

Answer:
25 + 14 = 14 + 25; Commutative Property of Addition

Question 12.
Show how you can use the Distributive Property to rewrite and find (32 × 6) + (32 × 4).
____

Answer:
(32 × 6) + (32 × 4) = 32 x (6 + 4); Distributive Property

Properties – Problem Solving – Page No. 16

Question 13.
Three friends’ meals at a restaurant cost $13, $14, and $11. Use parentheses to write two different expressions to show how much the friends spent in all. Which property does your pair of expressions demonstrate?
$ ____

Answer:
$38; Associative Law of Addition

Explanation:
Three friends’ meals at a restaurant cost $13, $14, and $11.
Friends spent in all = $13 + $14 + $11
$13 + ($14 + $11) = ($13 + $14) + $11 Associative Law of Addition

Question 14.
Jacob is designing an aquarium for a doctor’s office. He plans to buy 6 red blond guppies, 1 blue neon guppy, and 1 yellow guppy. The table shows the price list for the guppies. How much will the guppies for the aquarium cost?
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Properties img 4
$ ____

Answer:
$162

Explanation:
Jacob is designing an aquarium for a doctor’s office. He plans to buy 6 red-blond guppies, 1 blue neon guppy, and 1 yellow guppy.
(6 x $22) + (1 x $11) + (1 x $19) = $132 + $11 + $19 = $162

Question 15.
Sylvia bought 8 tickets to a concert. Each ticket costs $18. To find the total cost in dollars, she added the product 8 × 10 to the product 8 × 8, for a total of 144. Which property did Sylvia use?
i. Distributive Property
ii. Associative Property

Answer:
i. Distributive Property

Explanation:
Sylvia bought 8 tickets to a concert. Each ticket costs $18.
To find the total cost in dollars = 8 x $18
Using Distributive Property
(8 × 10) + (8 × 8) = 8 x (10 + 8) = 144.

Question 16.
Sense or Nonsense? Julie wrote (15 – 6) – 3 = 15 – (6 – 3). Is Julie’s equation sense or nonsense? Do you think the Associative Property works for subtraction? Explain.
__________

Answer:
Nonsense;
(15 – 6) – 3 = 9 – 3 = 6.
15 – (6 – 3) = 15 – 3 = 12
6 is not equal to 12.
So, Associative Property does not work for subtraction

Place Value Grade 5 Lesson 1 Understand Place Value Answer Key Question 17.
Test Prep Canoes rent for $29 per day. Which expression can be used to find the cost in dollars of renting 6 canoes for a day?
Options:
A. (6 + 20) + (6 + 9)
B. (6 × 20) + (6 × 9)
C. (6 + 20) × (6 + 9)
D. (6 × 20) × (6 × 9)

Answer:
B. (6 × 20) + (6 × 9)

Explanation:
Canoes rent for $29 per day. For renting 6 canoes for a day, 6 x $29
6 x $(20 + 9) = (6 x 20) + (6 x 9)

Powers of 10 and Exponents – Share and Show – Page No. 18

Write in exponent form and word form.

Question 1.
10 × 10
Exponent form:
Word form:
Type below:
__________

Answer:
Exponent form: 102
Word form: the second power of ten

Explanation:
10 × 10
Base = 10;
Exponent = 2;
Exponent Form: 102
Word Form: the second power of ten

Question 2.
10 × 10 × 10 × 10
Exponent form:
Word form:
Type below:
__________

Answer:
Exponent Form: 104
Word Form: The fourth power of ten

Explanation:
10 × 10 × 10 × 10
Base = 10;
Exponent = 4;
Exponent Form: 104
Word Form: The fourth power of ten

Find the value.

Question 3.
102 = ____

Answer:
100

Explanation:
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;

Question 4.
4 × 102 = ____

Answer:
400

Explanation:
4 × 102 =
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
4 x 100 = 400

Question 5.
7 × 102 = ____

Answer:
700

Explanation:
7 × 102 =
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
7 x 100 = 700

Powers of 10 and Exponents – On Your Own – Page No. 19

Write in exponent form and word form.

Question 6.
10 × 10 × 10
exponent form:
word form:
Type below:
__________

Answer:
Exponent form: 103
Word form: the third power of ten

Explanation:
10 × 10 × 10
Base = 10;
Exponent = 3;
Exponent Form: 103
Word Form: The third power of ten

Question 7.
10 × 10 × 10 × 10 × 10
exponent form:
word form:
Type below:
__________

Answer:
Exponent form: 105
Word form: the fifth power of ten

Explanation:
10 × 10 × 10 × 10 × 10
Base = 10;
Exponent = 5;
Exponent Form: 105
Word Form: The fifth power of ten

Find the value.

Question 8.
104 = ____

Answer:
10,000

Explanation:
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
104 = 10 x 10 x 10 x 10 = 10,000;

Go Math Grade 5 Chapter 1 Lesson 1.2 Answer Key Question 9.
2 × 103 = ____

Answer:
2,000

Explanation:
2 × 103 =
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
2 x 1,000 = 2,000

Question 10.
6 × 104 = ____

Answer:
60,000

Explanation:
6 × 104
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
104 = 10 x 10 x 10 x 10 = 10,000;
6 x 10,000 = 60,000

Complete the pattern.

Question 11.
7 × 100 = 7 × 1 = _______
7 × 101 = 7 × 10 = _______
7 × 102 = 7 × 10 × 10 = _______
7 × 103 = 7 × 10 × 10 × 10 = _______
7 × 104 = 7 × 10 × 10 × 10 × 10 = _______

Answer:
7 × 100 = 7 × 1 = 7
7 × 101 = 7 × 10 = 70
7 × 102 = 7 × 10 × 10 = 7 x 100 = 700
7 × 103 = 7 × 10 × 10 × 10 = 7 x 1,000 = 7,000
7 × 104 = 7 × 10 × 10 × 10 × 10 = 7 x 10,000 = 70,000

Explanation:
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
104 = 10 x 10 x 10 x 10 = 10,000;

Question 12.
9 × 100 = _______ = 9
9 × 101 = _______ = 90
9 × 102 = _______ = 900
9 × 103 = _______ = 9,000
9 × 104 = _______ = 90,000

Answer:
9 × 100 = 9 x 1 = 9
9 × 101 = 9 x 10 = 90
9 × 102 = 9 x 10 x 10 = 900
9 × 103 = 9 x 10 x 10 x 10= 9,000
9 × 104 = 9 x 10 x 10 x 10 x 10 = 90,000

Explanation:
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
104 = 10 x 10 x 10 x 10 = 10,000;

Question 13.
12 × 100 = 12 × 1 = _______
12 × 101 = 12 × 10 = _______
12 × 102 = 12 × 10 × 10 = _______
12 × 103 = 12 × 10 × 10 × 10 _______
12 × 104 = 12 × 10 × 10 × 10 × 10 _______

Answer:
12 × 100 = 12 × 1 = 12
12 × 101 = 12 × 10 = 120
12 × 102 = 12 × 10 × 10 = 1,200
12 × 103 = 12 × 10 × 10 × 10 = 12,000
12 × 104 = 12 × 10 × 10 × 10 × 10 = 120,000

Explanation:
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
104 = 10 x 10 x 10 x 10 = 10,000;

Question 14.
103 = 10 × 10n What is the value of n?
Think: 103 = 10 × () × (), or 10 × ()
The value of n is ……..
n = ______

Answer:
2

Explanation:
103 = 10 × 10n
103 = 10 x 10 x 10 = 10 x 102
The value of n is 2

Question 15.
Explain how to write 50,000 using exponents.
Type below:
__________

Answer:
5 x 104

Explanation:
5 x 10,000
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
104 = 10 x 10 x 10 x 10 = 10,000;
10,000 = 10 x 10 x 10 x 10 = 104
5 x 104

Powers of 10 and Exponents – UNLOCK the Problem – Page No. 20

Question 16.
Lake Superior is the largest of the Great Lakes. It covers a surface area of about 30,000 square miles. How can you show the estimated area of Lake Superior as a whole number multiplied by a power of ten?
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Powers of 10 and Exponents img 5
a. What are you asked to find?
Options:
A. 3 × 102 sq mi
B. 3 × 103 sq mi
C. 3 × 104 sq mi
D. 3 × 105 sq mi

Answer:
C. 3 × 104 sq mi

Explanation:
Lake Superior is the largest of the Great Lakes. It covers a surface area of about 30,000 square miles.
3 x 10,000
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
104 = 10 x 10 x 10 x 10 = 10,000;
10,000 = 10 x 10 x 10 x 10 = 104
3 x 104

Question 16.
b. How can you use a pattern to find the answer?
Type below:
__________

Answer:
3 x 10,000
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
104 = 10 x 10 x 10 x 10 = 10,000;
10,000 = 10 x 10 x 10 x 10 = 104
3 x 104

Question 16.
c. Write a pattern using the whole number 3 and powers of ten.
3 × 101 = 3 × 10   =
3 × 102 =              =
3 × 103 =              =
3 × 104 =              =
Type below:
__________

Answer:
3 × 101 = 3 × 10   =
3 × 102 = 3 x 10 x 10 = 300
3 × 103 = 3 x 10 x 10 x 10 = 3,000
3 × 104 = 3 x 10 x 10 x 10 x 10 = 30,000

Question 16.
d. Fill in the correct answer choice above.
Type below:
__________

Answer:
3 × 104 = 3 x 10 x 10 x 10 x 10 = 30,000

Question 17.
The Earth’s diameter through the equator is about 8,000 miles. What is the Earth’s estimated diameter written as a whole number multiplied by a power of ten?
Options:
A. 8 × 101 miles
B. 8 × 102 miles
C. 8 × 103 miles
D. 8 × 104 miles

Answer:
C. 8 × 103 miles

Explanation:
The Earth’s diameter through the equator is about 8,000 miles.
8 x 1,000
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
1,000 = 10 x 10 x 10
8 x 1,000 = 8 x 103

Place Value and Patterns 5th Grade Lesson 1.4 Answers Question 18.
The Earth’s circumference around the equator is about 25 × 103 miles. What is the Earth’s estimated circumference written as a whole number?
Options:
A. 250,000 miles
B. 25,000 miles
C. 2,500 miles
D. 250 miles

Answer:
B. 25,000 miles

Explanation:
The Earth’s circumference around the equator is about 25 × 103 miles.
25 × 103 miles;
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
25 x 1,000 = 25,000 miles

Multiplication Patterns – Share and Show – Page No. 22

Use mental math and a pattern to find the product.

Question 1.
• What basic fact can you use to help you find 30×4,000?
30 × 4,000 = ____

Answer:
3 x 4 = 12

Explanation:
30 × 4,000
The basic fact is 3 x 4 = 12

Use mental math to complete the pattern.

Question 2.
1 × 1 = 1
1 × 101 = _______
1 × 102 = _______
1 × 103 = _______

Answer:
1 × 1 = 1
1 × 101 = 10
1 × 102 = 100
1 × 103 = 1,000

Explanation:
1 × 1 = 1
1 × 101 = 1 x 10 = 10
1 × 102 = 1 x 10 x 10 = 100
1 × 103 = 1 x 10 x 10 x 10 = 1,000

Question 3.
7 × 8 = 56
(7 × 8) × 101 = _______
(7 × 8) × 102 = _______
(7 × 8) × 106 = _______

Answer:
7 × 8 = 56
(7 × 8) × 101 = 560
(7 × 8) × 102 = 5,600
(7 × 8) × 106 = 56,000,000

Explanation:
7 × 8 = 56
(7 × 8) × 101 = 56 x 10 = 560
(7 × 8) × 102 = 56 x 10 x 10 = 5,600
(7 × 8) × 106 = 56 x 10 x 10 x 10 x 10 x 10 x 10 = 56,000,000

Question 4.
6 × 5 = _______
6 × 5 × _______ = 300
6 × 5 × _______ = 3000
6 × 5 × _______ = 30,000

Answer:
6 × 5 = 30
6 × 5 × 101 = 300
6 × 5 × 103 = 3000
6 × 5 × 104 = 30,000

Explanation:
6 × 5 = 30
6 × 5 × 10 = 300
6 × 5 × 10 x 10 x 10 = 3000
6 × 5 × 10 x 10 x 10 x 10 = 30,000

On Your Own

Use mental math to complete the pattern.

Question 5.
9 × 5 = 45
(9 × 5) × 101 = _______
(9 × 5) × 102 = _______
(9 × 5) × 103 = _______

Answer:
9 × 5 = 45
(9 × 5) × 101 = 450
(9 × 5) × 102 = 4,500
(9 × 5) × 103 = 45,000

Explanation:
9 × 5 = 45
(9 × 5) × 101 = 45 x 10 = 450
(9 × 5) × 102 = 45 x 10 x 10 = 4,500
(9 × 5) × 103 = 45 x 10 x 10 x 10 = 45,000

Question 6.
3 × 7 = 21
(3 × 7) × 101 = _______
(3 × 7) × 102 = _______
(3 × 7) × 103 = _______

Answer:
3 × 7 = 21
(3 × 7) × 101 = 210
(3 × 7) × 102 = 2,100
(3 × 7) × 103 = 21,000

Explanation:
3 × 7 = 21
(3 × 7) × 101 = 21 x 10 = 210
(3 × 7) × 102 = 21 x 10 x 10 = 2,100
(3 × 7) × 103 = 21 x 10 x 10 x 10 = 21,000

Question 7.
5 × 4 = _______
(5 × 4) × _______ = 200
(5 × 4) × _______ = 2,000
(5 × 4) × _______ = 20,000

Answer:
5 × 4 = 20
(5 × 4) × 101 = 200
(5 × 4) × 102 = 2,000
(5 × 4) × 103 = 20,000

Explanation:
5 × 4 = 20
(5 × 4) × 10 = 200
(5 × 4) × 10 x 10 = 2,000
(5 × 4) × 10 x 10 x 10 = 20,000

Question 8.
5 × 7 = _______
(5 × 7) × _______ = 350
(5 × 7) × _______ = 3,500
(5 × 7) × _______ = 35,000

Answer:
5 × 7 = 35
(5 × 7) × 101 = 350
(5 × 7) × 102 = 3,500
(5 × 7) × 103 = 35,000

Explanation:
5 × 7 = 35
(5 × 7) × 10 = 350
(5 × 7) × 10 x 10 = 3,500
(5 × 7) × 10 x 10 x 10 = 35,000

5th Grade Go Math Book Question 9.
4 × 2 = 8
(4 × 2) × 101 = _______
(4 × 2) × 102 = _______
(4 × 2) × 103 = _______

Answer:
4 × 2 = 8
(4 × 2) × 101 = 80
(4 × 2) × 102 = 800
(4 × 2) × 103 = 8,000

Explanation:
4 × 2 = 8
(4 × 2) × 101 = 8 x 10 = 80
(4 × 2) × 102 = 8 x 10 x 10 = 800
(4 × 2) × 103 = 8 x 10 x 10 x 10 = 8,000

Question 10.
6 × 7 = 42
(6 × 7) × 101 = _______
(6 × 7) × 102 = _______
(6 × 7) × 103 = _______

Answer:
6 × 7 = 42
(6 × 7) × 101 = 420
(6 × 7) × 102 = 4,200
(6 × 7) × 103 = 42,000

Explanation:
6 × 7 = 42
(6 × 7) × 101 = 42 x 10 = 420
(6 × 7) × 102 = 42 x 10 x 10 = 4,200
(6 × 7) × 103 = 42 x 10 x 10 x 10 = 42,000

Use mental math and a pattern to find the product.

Question 11.
(6 × 6) × 101 = ____

Answer:
(6 × 6) × 101 =  360

Explanation:
6 x 6 =36
(6 × 6) × 101 = 36 x 10 = 360

Question 12.
(7 × 4) × 103 = ____

Answer:
28,000

Explanation:
7 x 4 = 28
(7 × 4) × 101 = 28 x 10 = 280
(7 × 4) × 102 = 28 x 10 x 10 = 2,800
(7 × 4) × 103 = 28 x 10 x 10 x 10 = 28,000

Question 13.
(9 × 8) × 102 = ____

Answer:
7,200

Explanation:
(9 × 8) = 72
(9 × 8) × 101 = 72 x 10 = 720
(9 × 8) × 102 = 72 x 10 x 10 = 7,200

Question 14.
(4 × 3) × 102 = ____

Answer:
1,200

Explanation:
(4 × 3) = 12
(4 × 3) × 101 = 12 x 10 = 120
(4 × 3) × 102 = 12 x 10 x 10 = 1,200

Question 15.
(2 × 5) × 103 = ____

Answer:
10,000

Explanation:
(2 × 5) = 10
(2 × 5) × 101 = 10 x 10 = 100
(2 × 5) × 102 = 10 x 10 x 10 = 1,000
(2 × 5) × 103 = 10 x 10 x 10 x 10 = 10,000

Question 16.
(2 × 8) × 102 = ____

Answer:
1,600

Explanation:
(2 × 8) = 16
(2 × 8) × 101 = 16 x 10 = 160
(2 × 8) × 102 = 16 x 10 x 10 = 1,600

Question 17.
(6 × 5) × 103 = ____

Answer:
30,000

Explanation:
(6 × 5) = 30
(6 × 5) × 101 = 30 x 10 = 300
(6 × 5) × 102 = 30 x 10 x 10 = 3,000
(6 × 5) × 103 = 30 x 10 x 10 x 10 = 30,000

Question 18.
(8 × 8) × 104 = ____

Answer:
640,000

Explanation:
(8 × 8) = 64
(8 × 8) × 101 = 64 x 10 = 640
(8 × 8) × 102 = 64 x 10 x 10 = 6,400
(8 × 8) × 103 = 64 x 10 x 10 x 10 = 64,000
(8 × 8) × 104 = 64 x 10 x 10 x 10 x 10 = 640,000

Question 19.
(7 × 8) × 104 = ____

Answer:
560,000

Explanation:
(7 × 8) = 56
(7 × 8) × 101 = 56 x 10 = 560
(7 × 8) × 102 = 56 x 10 x 10 = 5,600
(7 × 8) × 103 = 56 x 10 x 10 x 10 = 56,000
(7 × 8) × 104 = 56 x 10 x 10 x 10 x 10 = 560,000

Multiplication Patterns – Share and Show – Page No. 23

Use mental math to complete the table.

Question 20.
1 roll = 50 dimes ; Think:50 dimes per roll × 20 rolls =(5 × 2) × (10 × 10)
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Multiplication Patterns img 6
Type below:
__________

Answer:
Grade 5 Chapter 1 Image 4

Explanation:
1 roll = 50 dimes ;
Think:50 dimes per roll × 20 rolls =(5 × 2) × (10 × 10) = 10 x 102
50 dimes per roll × 30 rolls = (5 x 3) x (10 × 10) = 15 x 102
50 dimes per roll × 40 rolls = (5 x 4) x (20 × 10) = 20 x 102
50 dimes per roll × 50 rolls = (5 x 5) x (10 × 10) = 25 x 102
50 dimes per roll × 60 rolls = (5 x 6) x (10 × 10) = 30 x 102
50 dimes per roll × 70 rolls = (5 x 7) x (10 × 10) = 35 x 102
50 dimes per roll × 80 rolls = (5 x 8) x (10 × 10) = 40 x 102
50 dimes per roll × 90 rolls = (5 x 9) x (10 × 10) = 45 x 102
50 dimes per roll × 100 rolls = (5 x 10) x (10 × 10) = 50 x 102

Question 21.
1 roll = 40 quarters ; Think:40 quarters per roll × 20 rolls =(4 × 2) × (10 × 10)
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Multiplication Patterns img 7
Type below:
__________

Answer:
Grade 5 Chapter 1 Image 5

Explanation:
1 roll = 40 quarters ;
Think:40 quarters per roll × 20 rolls =(4 × 2) × (10 × 10) = 8 x 102
40 quarters per roll × 30 rolls =(4 × 3) × (10 × 10) = 12 x 102
40 quarters per roll × 40 rolls =(4 × 4) × (10 × 10) = 16 x 102
40 quarters per roll × 50 rolls =(4 × 5) × (10 × 10) = 20 x 102
40 quarters per roll × 60 rolls =(4 × 6) × (10 × 10) = 24 x 102
40 quarters per roll × 70 rolls =(4 × 7) × (10 × 10) = 28 x 102
40 quarters per roll × 80 rolls =(4 × 8) × (10 × 10) = 32 x 102
40 quarters per roll × 90 rolls =(4 × 9) × (10 × 10) = 36 x 102
40 quarters per roll × 100 rolls =(4 × 10) × (10 × 10) = 40 x 102

Question 22.
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Multiplication Patterns img 8
Type below:
__________

Answer:
Grade 5 Chapter 1 Image 6

Explanation:
80 x 800 = 64 x 103
80 x 6 = (8 x 6) x 10 = 48 x 101
80 x 70 = (8 x 7) x (10 x 10) = 56 x 102
80 x 9,000 = (8 x 9) x (10 x 10 x 10 x 10) = 64 x 104

Go Math Grade 5 Chapter 1 Answer Key Question 23.
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Multiplication Patterns img 9
Type below:
__________

Answer:
Grade 5 Chapter 1 Image 7

Explanation:
Given that
90 x 9,000 = (9 x 9) x 10 x 10 x 10 x 10 = 81 x 104
90 x 6 = (9 x 6) x 10 = 54 x 101
90 x 70 = (9 x 7) x (10 x 10) = 63 x 102
90 x 800 = (9 x 8) x (10 x 10 x 10) = 72 x 103

Problem Solving

Use the table for 24–26.

Question 24.
What if you magnified the image of a cluster fly by 9 × 103 ? What would the length appear to be?
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Multiplication Patterns img 10
____ mm

Answer:
9,000 mm

Explanation:
9 × 103  = 9 x 10 x 10 x 10 = 9,000

Question 25.
If you magnified the image of a fire ant by 4 × 103 and a treehopper by 3 × 103, which insect would appear longer? How much longer?
____ mm

Answer:
103 mm

Explanation:
fire ant: 4 × 103  = 4 x 10 x 10 x 10 = 4,000 mm
tree hopper: 3 × 103 = 3 x 10 x 10 x 10 = 3,000 mm
4,000 > 3,000.
So, the fire ant appears to be longer.
4,000 – 3,000 = 1,000 = 103

Question 26.
John wants to magnify the image of a fire ant and a crab spider so they appear to be the same length. How many times their actual sizes would he need to magnify each image?
Fire ant by _______ times
Crab spider by ______ times

Answer:
Fire ant by 5 times
Crab spider by 4 times

Explanation:
Given that Fire ant = 4 mm
crab spider = 5 mm
So, to make them have the same lengths, multiply fire ant by 5 mm and multiply Crab spider by 4 mm

Multiplication Patterns – Share and Show – Page No. 24

Question 27.
What does the product of any whole-number factor multiplied by 100 always have? Explain.
Type below:
__________

Answer:
The product of any whole number factor multiplied by 100 has two digits which are 0 in ones and tens place.
Example: 2 x 100 = 200

Question 28.
Test Prep How many zeros are in the product (5 × 4) × 104?
Options:
A. 3
B. 4
C. 5
D. 6

Answer:
C. 5

Explanation:
(5 × 4) × 104 = 20 x 104 = 2 x 105
5 zeroes

Use patterns and mental math to solve.

Question 29.
The human body has about 30 times as many platelets as white blood cells. A small sample of blood has 8×103 white blood cells. About how many platelets are in the sample?
______ platelets

Answer:
24 x 104 platelets

Explanation:
Let the number of platelets = s.
s = 30 x 8×103
s = 30 x 8 x 10 x 10 x 10 = (3 x 8) x (10 x 10 x 10 x 10) = 24 x 104

Question 30.
Basophils and monocytes are types of white blood cells. A blood sample has about 5 times as many monocytes as basophils. If there are 60 basophils in the sample, how many monocytes are there?
______ monocytes

Answer:
3 x 102 monocytes

Explanation:
Let the number of monocytes = S
S = 5 x 60 = 300 = 3 x 100
S = 3 x 102

Question 31.
Lymphocytes and eosinophils are types of white blood cells. A blood sample has about 10 times as many lymphocytes as eosinophils. If there are 2 × 102 eosinophils in the sample, how many lymphocytes are there?
______ lymphocytes

Answer:
2 × 103 lymphocytes

Explanation:
Lymphocytes and eosinophils are types of white blood cells. A blood sample has about 10 times as many lymphocytes as eosinophils.
There are 2 × 102 eosinophils in the sample
Then, Lymphocytes = 10 x 2 × 102 eosinophils = 2 × 103

Go Math Grade 5 Chapter 1 Extra Practice Answer Key Question 32.
An average person has 6 × 102 times as many red blood cells as white blood cells. A small sample of blood has 7 × 103 white blood cells. About how many red blood cells are in the sample?
______ red blood cells

Answer:
42 x 10 red blood cells

Explanation:
Let the red blood cells = S
S = 7 × 103 x 6 × 102
S = 42 x 10

Mid-Chapter Checkpoint – Vocabulary – Page No. 25

Choose the best term for the box.

Question 1.
A group of three digits separated by commas in a multidigit number is a __
________

Answer:
Period

Question 2.
An __ is the number that tells how many times a base is used as a factor
________

Answer:
exponent

Concepts and Skills

Complete the sentence.

Question 3.
7 is \(\frac{1}{10}\) of ______

Answer:
70

Explanation:
Let the unknown number is S.
7 = \(\frac{1}{10}\) S
S = 7 X 10 = 70

Question 4.
800 is 10 times as much as ______

Answer:
80

Explanation:
Let the unknown number is S.
800 = 10S
S = 800/10 = 80.

Write the value of the underlined digit.

Question 5.
6,581,678
________

Answer:
80,000

Explanation:
(6 x 1,000,000) + (5 x 1,00,000) + (8 x 10,000) + (1 x 1,000) + (6 x 100) + (7 x 10) + (8 x 1)
8 x 10,000 = 80,000

Question 6.
25,634
________

Answer:
600

Explanation:
(2 x 10,000) + (5 x 1,000) + (6 x 100) + (3 x 10) + (4 x 1)
6 x 100 = 600

Question 7.
34,634,803
________

Answer:
4,000,000

Explanation:
(3 x 10,000,000) + (4 x 1,000,000) + (6 x 1,00,000) + (3 x 10,000) + (4 x 1,000) + (8 x 100) + (0 x 10) + (3 x 1)
4 x 1,000,000 = 4,000,000

Question 8.
2,764,835
________

Answer:
700,000

Explanation:
(2 x 1,000,000) + (7 x 1,00,000) + (6 x 10,000) + (4 x 1,000) + (8 x 100) + (3 x 10) + (5 x 1)
7 x 1,00,000 = 700,000

Complete the equation, and tell which property you used.

Question 9.
8 × (14 + 7) = ________ + (8 × 7)

Answer:
8 × (14 + 7) = (8 x 14) + (8 × 7);
Distributive Property of Multiplication

Explanation:
8 × (14 + 7)
(8 x 14) + (8 × 7); Distributive Property of Multiplication

Question 10.
7 + (8 + 12) = ________ + 12

Answer:
7 + (8 + 12) = (7 + 8) + 12
Associative Property of Addition

Find the value.

Question 11.
103 = ______

Answer:
1,000

Explanation:
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;

Question 12.
6 × 102 = ______

Answer:
600

Explanation:
6 × 102
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
6 x 100 = 600

Go Math Grade 5 Chapter 1 Pdf Question 13.
4 × 104 = ______

Answer:
40,000

Explanation:
4 × 104
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
104 = 10 x 10 x 10 x 10 = 10,000;
4 x 10,000 = 40,000

Use mental math and a pattern to find the product.

Question 14.
70 × 300 = ______

Answer:
21,000

Explanation:
70 × 300 = (7 x 3) x (10 x 10 x 10) = 21 x 1,000 = 21,000

Question 15.
(3 × 4) × 103 = ______

Answer:
12,000

Explanation:
(3 × 4) × 103
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
12 x 1,000 = 12,000

Mid-Chapter Checkpoint – Page No. 26

Fill in the bubble completely to show your answer.

Question 16.
DVDs are on sale for $24 each. Which expression can be used to find the cost in dollars of buying 4 DVDs?
Options:
A. (4 + 20) + (4 + 4)
B. (4 × 20) + (4 × 4)
C (4 + 20) × (4 + 4)
D. (4 × 20) × (4 × 4)

Answer:
B. (4 × 20) + (4 × 4)

Explanation:
24 can be written as 25 – 1
4 x 24 = 4 x (20 + 4) = (4 x 20) + (4 x 4)

Question 17.
The Muffin Shop chain of bakeries sold 745,305 muffins last year. Which choice shows that number in expanded form?
Options:
A. (7 × 100,000) + (45 × 10,000) + (3 × 100) + (5 × 10)
B. (7 × 100,000) + (4 × 10,000) + (5 × 1,000) + (5 × 10)
C. (7 × 100,000) + (4 × 10,000) + (5 × 1,000) + (3 × 100) + (5 × 1)
D. (7 × 100,000) + (4 × 10,000) + (3 × 100) + (5 × 1)

Answer:
C. (7 × 100,000) + (4 × 10,000) + (5 × 1,000) + (3 × 100) + (5 × 1)

Explanation:
First, we can write 745,305 as:
700,000 + 40, 000 + 5,000 + 300 + 5
(7 x 100,000) + (4 x 10,000) + (5 x 1,000) + (3 x 100) + 5

Go Math Grade 5 End of Year Assessment Answer Key Question 18.
The soccer field at Mario’s school has an area of 6,000 square meters. How can Mario show the area as a whole number multiplied by a power of ten?
Options:
A. 6 × 104 sq m
B. 6 × 103 sq m
C. 6 × 102 sq m
D. 6 × 101 sq m

Answer:
B. 6 × 103 sq m

Explanation:
6,000 square meters = 6 x 1,000 = 6 x 10 x 10 x 10 = 6 × 103 sq m

Question 19.
Ms. Alonzo ordered 4,000 markers for her store. Only \(\frac{1}{10}\) of them arrived. How many markers did she receive?
Options:
A. 4
B. 40
C. 400
D. 1,400

Answer:
C. 400

Explanation:
Ms. Alonzo ordered 4,000 markers for her store. Only \(\frac{1}{10}\) of them arrived.
4,000 x \(\frac{1}{10}\) = 400

Question 20.
Mark wrote the highest score he made on his new video game as the product of 70 × 6,000. What was his score?
Options:
A. 420
B. 4,200
C. 42,000
D. 420,000

Answer:
D. 420,000

Explanation:
Mark wrote the highest score he made on his new video game as the product of 70 × 6,000.
(7 x 6) x (10 x 10 x 10 x 10) = 42 x 10,000 = 420,000

Multiply by 1-digit numbers – Share and Show – Page No. 29

Complete to find the product.

Question 1.
6 × 796           Estimate: 6 × ___ = ___
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Multiply by 1-digit numbers img 11
______

Answer:
4,776

Explanation:
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Multiply by 1-digit numbers img 11

Estimate. Then find the product.

Question 2.
Estimate: ___
6 0 8
×   8
———-
Estimate: ________
Product: 608 × 8 = ________

Answer:
Estimate: 6,000
Product: 608 × 8 = 4,864

Explanation:
Estimate: 608 is close to 600; 8 is close to 10
600 x 10 = 6,000
608 x 8
Multiply the ones; 8 x 8 = 64. 4 ones and 6 tens. Write the ones and the
regrouped tens.
Multiply the tens; 0 x 8 = 0 + 6 = 6
Multiply the hundreds; 6 x 8 = 48.
So, 4,864 is the product of 608 × 8
Product: 4,864

Question 3.
Estimate: __
5 5 6
×   4
———–
Estimate: ________
Product: 556 × 4 = ________

Answer:
Estimate: 2,780
Product: 556 × 4 = 2,224

Explanation:
Estimate: 556 is close to 550; 4 is close to 5
556 x 5 = 2,780
556 × 4
Multiply the ones; 6 x 4 = 24. 4 ones and 2 tens. Write the ones and the
regrouped tens.
Multiply the tens; 5 x 4 = 20 + 2 = 22; 2 tens and 2 hundreds. Write the tens and regroup the hundreds.
Multiply the hundreds; 5 x 4 = 20; 20 + 2 = 22.
So, 2,224 is the product of 556 × 4
Product: 2,224

Go Math Grade 5 Chapter 1 Review/Test Answer Key Question 4.
Estimate:
1,925
×    7
———–
Estimate: ________
Product: 1,925 × 7 = ________

Answer:
Estimate: 10,000
Product: 1,925 × 7 = 13,475

Explanation:
Estimate: 1,925 is close to 2000; 7 is close to 5
2,000 x 5 = 10,000
1,925 × 7
Multiply the ones; 7 x 5 = 35. 5 ones and 3 tens. Write the ones and the
regrouped tens.
Multiply the tens; 7 x 2 = 14; 14 + 3 = 17; 7 tens and 1 hundreds. Write the tens and regrouped hundreds.
Multiply the hundreds; 7 x 9 = 63; 63 + 1 = 64. 4 hundred and 6 thousand Write the hundreds and regrouped thousands.
Multiply the thousands; 7 x 1 = 7; 7 + 6 = 13
So, 13,475 is the product of 1,925 × 7
Product: 13,475

On Your Own

Estimate. Then find the product.

Question 5.
Estimate:__
7 9 4
×   3
———-
Estimate: ________
Product:794 × 3 = ________

Answer:
Estimate: 800
Product:794 × 3 = 2,382

Explanation:
Estimate: 794 is close to 800 and 3 is close to 1
800 x 1 = 800
794 x 3 = (700 + 90 + 4) x 3 = (700 x 3) + (90 x 3) + (4 x 3) = 2100 + 270 + 12 = 2,382

Question 6.
Estimate:___
8 2 2
×   6
———-
Estimate: ________
822 × 6 = ________

Answer:
Estimate: 4,000
822 × 6 = 4,932

Explanation:
Estimate: 822 is close to 800 and 6 is close to 5
800 x 5 = 4,000
822 × 6 = (800 + 20 + 2) x 6 = (800 x 6) + (20 x 6) + (2 x 6) = 4800 + 120 + 12 = 4,932

Question 7.
Estimate:
3,102
×    5
———–
Estimate: ________
Product: 3,102 × 5 = ________

Answer:
Estimate: 15,500
Product: 3,102 × 5 = 15,510

Explanation:
Estimate: 3,102 is close to 3,100 and 5 is close to 5
3,100 x 5 = 15,500
3,102 x 5 = (3,000 + 100 + 0 + 2) x 5 = (3000 x 5) + (100 x 5) + 0 + (2 x 5) = 15,000 + 500 + 0 + 10 = 15,510

Algebra Solve for the unknown number.

Question 8.
3 9 6
×   6
———
2, 3 6
396 × 6 = 23 ______ 6

Answer:
7

Explanation:
396 x 6 = (300 + 90 + 6) x 6 = (300 x 6) + (90 x 6) + (6 x 6) = 1800 + 540 + 36 = 2376. So, the unknown number is 7

Question 9.
5,1 2
×   8
——–
16
Type below:
__________

Answer:
5127 x 8 = 41,016.
Unknown numbers = 7 and 410

Explanation:
5,127 x 8 = (5000 + 100 + 20 + 7) x 8 = (5000 x 8) + (100 x 8) + (20 x 8) + (7 x 8) = 40000 + 800 + 160 + 56 = 41,016

Question 10.
8, 5 6
×    7
———
60,03
Type below:
__________

Answer:
8,576 x 7 = 60,032

Explanation:
8,576 x 7 = (8000 + 500 + 70 + 6) x 7 = (8000 x 7) + (500 x 7) + (70 x 7) + (6 x 7) = 56000 + 3500 + 490 + 42 = 60,032

Practice: Copy and Solve Estimate. Then find the product.

Question 11.
116 × 3 = _______
Estimate: _______

Answer:
Estimate: 300
116 × 3 = 348

Explanation:
Estimate: 116 is close to 100;
100 x 3 = 300
116 x 3
6 x 3 =18; add ones and regroup tens
3 x 1 = 3; 3 + 1 = 4
3 x 1 = 3
So, 348 is the product

Question 12.
338 × 4 = _______
Estimate: _______

Answer:
338 × 4 = 1,352
Estimate: 1,200

Explanation:
Estimate: 338 is close to 300;
300 x 4 = 1,200
338 × 4
8 x 4 =32; add ones and regroup tens
3 x 4 = 12; 12 + 3 = 15; add tens and regroup hundreds
3 x 4 = 12; 12 + 1 = 13
So, 1352 is the product

Question 13.
6 × 219 = _______
Estimate: _______

Answer:
6 × 219 = 1,314
Estimate: 1200

Explanation:
Estimate: 219 is close to 200
200 x 6 = 1200
6 × 219
6 x 9 = 54; add ones and regroup tens
6 x 1 = 6; 6 + 5 = 11; add tens and regroup hundreds
6 x 2 = 12; 12 + 1 = 13
So, 1,314

Question 14.
7 × 456 = _______
Estimate: _______

Answer:
7 × 456 = 3192
Estimate: 3500

Explanation:
Estimate: 456 is close to 500
500 x 7 = 3500
7 x 456
7 x 6 = 42; add ones and regroup tens
7 x 5 = 35; 35 + 4 = 39; add tens and regroup hundreds
7 x 4 = 28; 28 + 3 = 31
So, 3192

Question 15.
5 × 1,012 = _______
Estimate: _______

Answer:
5 × 1,012 = 5,060
Estimate: 5,000

Explanation:
Estimate: 1,012 is close to 1,000
1,000 x 5 = 5,000
5 × 1,012
5 x 2 = 10; add ones and regroup tens
5 x 1 = 5; 5 + 1 = 6; add tens and regroup hundreds
5 x 0 = 0
5 x 1 = 5
So, 5,060

Question 16.
2,921 × 3 = _______
Estimate: _______

Answer:
2,921 × 3 = 8,763
Estimate: 9,000

Explanation:
Estimate: 2,921 is close to 3,000
3,000 x 3 = 9,000
2,921 × 3
3 x 1 = 3;
3 x 2 = 6;
3 x 9 = 27; add hundreds and regroup thousands
3 x 2 = 6; 6 + 2 = 8
So, 8,763

Question 17.
8,813 × 4 = _______
Estimate: _______

Answer:
8,813 × 4 = 35,252
Estimate: 3,600

Explanation:
Estimate: 8,813 is close to 9,000
9,000 x 4 = 3,600
8,813 × 4
4 x 3 = 12; add ones and regroup tens
4 x 1 = 4; 4 + 1 = 5;
4 x 8 = 32; add hundreds and regroup thousands
4 x 8 = 32; 32 + 3 = 35
So, 35,252

Question 18.
9 × 3,033 = _______
Estimate: _______

Answer:

Explanation:
Estimate: 3,033 is close to 3,000
3,000 x 9 = 27,000
9 × 3,033
9 x 3 = 27; add ones and regroup tens
9 x 3 = 27; 27 +  = 11; add tens and regroup hundreds
6 x 2 = 12; 12 + 1 = 13
So, 1,314

Multiply by 1-digit numbers – Problem Solving – Page No. 30

What’s the Error?

Question 19.
The Plattsville Glee Club is sending 8 of its members to a singing contest in Cincinnati, Ohio. The cost will be $588 per person. How much will it cost for the entire group of 8 students to attend? Both Brian and Jermaine solve the problem. Brian says the answer is $40,074. Jermaine’s answer is $4,604.
Estimate the cost. A reasonable estimate is _
$ ______

Answer:
$4,800

Explanation:
The Plattsville Glee Club is sending 8 of its members to a singing contest in Cincinnati, Ohio. The cost will be $588 per person.
So, for entire group 8 x $588 = $4,704
Jermaine’s answer is correct. Because the $4,604 is close to $4,704
588 is close to 600. So, 600 x 8 = $4,800

Use Place Value Patterns to Complete the Table Question 19.
Although Jermaine’s answer seems reasonable, neither Brian nor Jermaine solved the problem correctly. Find the errors in Brian’s and Jermaine’s work.
Then, solve the problem correctly.
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Multiply by 1-digit numbers img 12
What error did Brian make? Explain.
Type below:
__________

Answer:
When Brian multiplied the tens, he wrote the total number of tens in the product instead of regrouping, so the place values of his product are incorrect.

Question 19.
What error did Jermaine make? Explain.
Type below:
__________

Answer:
Jermaine regrouped the wrong amount of hundreds. He regrouped the tens as 6 hundred instead of 7 hundred.
$588 x 8 = $4,704

Question 19.
How could you predict that Jermaine’s answer might be incorrect using your estimate?
Type below:
__________

Answer:
I used 600 × 8 to estimate the product; 588 is 12 less than 600. Since 12 × 8 = 96, and 4,604 is almost 200 less than the estimate of 4,800, the answer is probably too low.

Multiply by 2-digit numbers – Share and Show – Page No. 33

Complete to find the product

Question 1.
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Multiply by 2-digit numbers img 13
Type below:
__________

Answer:
2,752

Explanation:
64 x 3 = 192
64 x 40 = 2,560
2,560 + 192 = 2,752

Question 2.
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Multiply by 2-digit numbers img 14
Type below:
__________

Answer:
21,698

Explanation:
571 x 8 = 4,568
571 x 30 = 17,130
17,130 + 4,568 = 21,698

Estimate. Then find the product.

Question 3.
Estimate:____
2 4
× 1 5
———-
Estimate: ________
Product: ________

Answer:
Estimate: 300
Product: 360

Explanation:
2 4 x 15
Estimate: 20 x 15 = 300
24 x 5 = 120
24 x 10 = 240
Product:: 240 + 120 = 360

Question 4.
Estimate:____
3 7
× 6 3
———-
Estimate: ________
Product: ________

Answer:
Estimate: 2,400
Product: 2,331

Explanation:
37 x 63
Estimate: 40 x 60 = 2,400
37 x 3 = 111
37 x 60 = 2220
Product:: 2220 + 111 = 2,331

Multiply by 1 Digit Numbers Lesson 1.6 Question 5.
Estimate:____
3 8 4
× 4 5
———-
Estimate: ________
Product: ________

Answer:
Estimate: 20,000
Product: 17,280

Explanation:
384 x 45
Estimate: 400 x 50 = 20,000
384 x 5 = 1920
384 x 40 = 15,360
Product:: 15,360 + 1920 = 17,280

On Your Own

Estimate. Then find the product.

Question 6.
Estimate:____
2 8
× 2 2
———-
Estimate: ________
Product: ________

Answer:
Estimate: 600
Product: 616

Explanation:
28 x 22
Estimate: 30 x 20 = 600
28 x 2 = 56
28 x 20 = 560
Product:: 56 + 560 = 616

Question 7.
Estimate:____
9 3
× 7 6
———-
Estimate: ________
Product: ________

Answer:
Estimate: 7200
Product: 7,068

Explanation:
93 x 76
Estimate: 90 x 80 = 7200
93 x 6 = 558
93 x 70 = 6,510
Product:: 558 + 6,510 = 7,068

Question 8.
Estimate:____
2 9 5
× 5 1
———-
Estimate: ________
Product: ________

Answer:
Estimate: 15,000
Product: 15,045

Explanation:
295 x 51
Estimate: 300 x 50 = 15,000
295 x 1 = 295
295 x 50 = 14,750
Product:: 295 + 14,750 = 15,045

Practice: Copy and Solve Estimate. Then find the product.

Question 9.
Estimate: ________
54 × 31 = ________

Answer:
Estimate: 1,500
Product: 1,674

Explanation:
54 x 31
Estimate: 50 x 30 = 1,500
54 x 1 = 54
54 x 30 = 1,620
Product:: 54 + 1,620 = 1,674

Question 10.
Estimate: ________
42 × 26 = ________

Answer:
Estimate: 1,200
Product: 1,092

Explanation:
42 x 26
Estimate: 40 x 30 = 1,200
42 x 6 = 252
42 x 20 = 840
Product:: 252 + 840 = 1,092

Go Math Grade 5 Workbook Question 11.
Estimate: ________
38 × 64 = ________

Answer:
Estimate: 2,400
Product: 2,432

Explanation:
38 × 64
Estimate: 40 x 60 = 2,400
38 x 4 = 152
38 x 60 = 2,280
Product:: 152 + 2,280 = 2,432

Question 12.
Estimate: ________
63 × 16 = ________

Answer:
Estimate: 1,200
Product: 1,008

Explanation:
63 x 16
Estimate: 60 x 20 = 1,200
63 x 6 = 378
63 x 10 = 630
Product:: 378 + 630 = 1,008

Question 13.
Estimate: ________
204 × 41 = ________

Answer:
Estimate: 8,000
Product: 8,364

Explanation:
204 × 41
Estimate: 200 x 40 = 8,000
204 x 1 = 204
204 x 40 = 8,160
Product:: 204 + 8,160 = 8,364

Place Value Patterns 5th Grade Go Math Question 14.
Estimate: ________
534 × 25 = ________

Answer:
Estimate: 15,000
Product: 13,350

Explanation:
534 x 25
Estimate: 500 x 30 = 15,000
534 x 5 = 2,670
534 x 20 = 10,680
Product:: 2,670 + 10,680 = 13,350

Question 15.
Estimate: ________
722 × 39 = ________

Answer:
Estimate: 28,000
Product: 28,158

Explanation:
722 × 39
Estimate: 700 x 40 = 28,000
722 x 9 = 6,498
722 x 30 = 21,660
Product:: 6,498 + 21,660 = 28,158

Question 16.
Estimate: ________
957 × 43 = ________

Answer:
Estimate: 40,000
Product: 44,022

Explanation:
957 × 43
Estimate: 1,000 x 40 = 40,000
957 x 3 = 2,871
957 x 40 = 41,151
Product:: 2,871 + 41,151 = 44,022

Multiply by 2-digit numbers – Problem Solving – Page No. 34

Use the table for 17–20.

Question 17.
How much sleep does a jaguar get in 1 year?
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Multiply by 2-digit numbers img 15
_____ hours

Answer:
4,004 hours

Explanation:
52 weeks x 77 = 4,004 hours

Question 18.
In 1 year, how many more hours of sleep does a giant armadillo get than a platypus?
_____ hours

Answer:
1,508 hours

Explanation:
giant armadillo: 52 x 127 = 6,604
platypus: 52 x 98 = 5,096
6,604 – 5,096 = 1,508

Question 19.
Owl monkeys sleep during the day, waking about 15 minutes after sundown to find food. At midnight, they rest for an hour or two, then continue to feed until sunrise. They live about 27 years. How many hours of sleep does an owl monkey that lives 27 years get in its lifetime?
_____

Answer:
4927.5 days

Explanation:
Given that the time of Owl monkeys sleep during the day walking about 15 minutes after sundown. Then, at midnight they rest for an hour or two then continue to feed until sunrise. Notice that the above description doesn’t say that they sleep in after sundown. They either eat or rest.
Day time is usually considered from 6 am to 6 pm which is a total of 12 hours.
As per the given information, owl monkey sleeps in that period.
Given that owl, monkeys live for 27 years.
So the time for sleeping in their lifetime = 12 hours * 27 years
= (12/24 days) * 27 years
= (1/2 days) * 27 years
= (1/2 days) * (27*365 days)
= (1/2 days) * (9855 days)
= 4927.5 days
Hence final answer is 4927.5 days.

Go Math Grade 5 Answer Key Chapter 1 Question 20.
Three-toed sloths move very slowly, using as little energy as possible. They sleep, eat, and even give birth upside down. A baby sloth may cling to its mother for as much as 36 weeks after being born. How much of that time is the sloth asleep?
_____ hours

Answer:
3,636 hours

Explanation:
101 x 36 = 3,636

Question 21.
Test Prep A sloth’s maximum speed on the ground is 15 feet in 1 minute. Even though it would be unlikely for a sloth to stay in motion for more than a few moments, how far would a sloth travel in 45 minutes at that speed?
Options:
A. 60 feet
B. 270 feet
C. 675 feet
D. 6,750 feet

Answer:
C. 675 feet

Explanation:
The sloth’s maximum speed on the ground is 15 feet in 1 minute. For 45 minutes, 45 x 15 = 675 feet

Relate Multiplication to Division – Share and Show – Page No. 37

Question 1.
Brad has 72 toy cars that he puts into 4 equal groups. How many cars does Brad have in each group? Use the array to show your answer.
4 × = 72         72 ÷ 4 =
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Relate Multiplication to Division img 16
4 × ________ = 72
72 ÷ 4 = ________

Answer:
Grade 5 Chapter 1 Image 8

Explanation:
Brad has 18 toy cars in each group.
Because 72÷4 =18
4 × 18 = 72
4 x (9 + 9) = (4 x 9) + (4 x 9)

Use multiplication and the Distributive Property to find the quotient.

Question 2.
108 ÷ 6 = _____

Answer:
18

Explanation:
108 ÷ 6
6 x 18 = 6 x (9 + 9) = (6 x 9) + (6 x 9) = 54 + 54 = 108
(36 + 72) ÷ 6 = (36 ÷ 6) + (72÷ 6) = 6 + 12 = 18

Question 3.
84 ÷ 6 = _____

Answer:
14

Explanation:
84 ÷ 6
(42 + 42) ÷ 6 = (42÷ 6) + (42÷ 6) = 7 + 7 = 14
6 x 14 = 6 x (7 + 7) = (6 x 7) + (6 x 7) = 42 + 42 = 84

Question 4.
184 ÷ 8 = _____

Answer:
23

Explanation:
184 ÷ 8
(92 + 92) ÷ 8 = (92÷ 8) + (92÷ 8) = 11.5 + 11.5 = 23
8 x 23 = 8 x (11 + 12) = (8 x 11) + (8 x 12) = 88 + 96 = 184

On Your Own

Use multiplication and the Distributive Property to find the quotient.

Question 5.
60 ÷ 4 = _____

Answer:
15

Explanation:
60 ÷ 4
(20 + 40) ÷ 4 = (20 ÷ 4) + (40 ÷ 4) = 5 + 10 = 15
4 x 15 = 4 x (7+ 8) = (4 x 7) + (4 x 8) = 28 + 32 = 60

Question 6.
144 ÷ 6 = _____

Answer:
24

Explanation:
144 ÷ 6
(72 + 72) ÷ 6 = (72 ÷ 6) + (72 ÷ 6) = 12 + 12 = 24
6 x 24 = 6 x ( 12 + 12) = (6 x 12) + (6 x 12) = 72 + 72 = 144

Question 7.
252 ÷ 9 = _____

Answer:
28

Explanation:
252 ÷ 9
(126 + 126) ÷ 9 = (126 ÷ 9) + (126 ÷ 9) = 14 + 14 = 28
6 x 28 = 6 x ( 14 + 14) = (6 x 14) + (6 x 14) = 126 + 126 = 252

Find each quotient. Then compare. Write <, > or =.

Question 8.
51 ÷ 3 _____ 68 ÷ 4

Answer:
51 ÷ 3 = 68 ÷ 4

Explanation:
51 ÷ 3 = 17
68 ÷ 4 = 17
17 = 17.

Question 9.
252 ÷ 6 _____ 135 ÷ 3

Answer:
252 ÷ 6 < 135 ÷ 3

Explanation:
252 ÷ 6 = 42
135 ÷ 3 = 45
42 < 45

Go Math Common Core Grade 5 Answer Key Question 10.
110 ÷ 5 _____ 133 ÷ 7

Answer:
110 ÷ 5 > 133 ÷ 7

Explanation:
110 ÷ 5 = 22
133 ÷ 7 = 19
22 > 19

Relate Multiplication to Division – Problem Solving – Page No. 38

Use the table to solve 11–13.

Question 11.
A group of 6 friends share a bag of the 45-millimeter bouncy balls equally among them. How many does each friend get?
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Relate Multiplication to Division img 17
____ balls

Answer:
7 balls

Explanation:
A group of 6 friends shares a bag of the 45-millimeter bouncy balls equally among them.
45/6 = 7 balls and 3 balls remained

Question 12.
Mr. Henderson has 2 bouncy-ball vending machines. He buys one bag of the 27-millimeter balls and one bag of the 40-millimeter balls. He puts an equal number of each in the 2 machines. How many bouncy balls does he put in each machine?
________ balls of the 27-millimeter.
________ balls of the 40-millimeter.
________ total balls

Answer:
51 balls of the 27-millimeter
29 balls of the 40-millimeter
80 total balls

Explanation:
There are 51 27 mm, 29 40 mm

Question 13.
Lindsey buys a bag of each size of a bouncy ball. She wants to put the same number of each size of bouncy ball into 5 party-favor bags. How many of each size of bouncy ball will she put in a bag?
________ balls of the 27-millimeter
________ balls of the 40-millimeter
________ balls of the 45-millimeter

Answer:
34 balls of the 27-millimeter
12 balls of the 40-millimeter
34 balls of the 45-millimeter

Explanation:
There are 34 27 mm, 12 40 mm, and 34 45 mm bouncy balls

Question 14.
What’s the Error? Sandy writes (4 × 30) + (4 × 2) and says the quotient for 128 ÷ 4 is 8. Is she correct? Explain.
128 ÷ 4 = ____

Answer:
Sandy’s answer is incorrect.
128 ÷ 4 = 32

Explanation:
(4 × 30) + (4 × 2) = 120 + 8 = 128
128 ÷ 4 = 32.
(4 × 30) + (4 × 2) = 4 x (30 + 2) = 4 x 32 = 128.
128 ÷ 4 = 32

Question 15.
Test Prep Which of the following can be used to find 150 ÷ 6?
Options:
A. (6 × 20) + (6 × 5)
B. (6 × 10) + (6 × 5)
C. (2 × 75) + (2 × 3)
D. (6 × 15) + (6 × 5)

Answer:
A. (6 × 20) + (6 × 5)

Explanation:
150 ÷ 6 = 25
25 x 6 = 150
6 x 25 = 6 x (20 + 5) = (6 × 20) + (6 × 5)

Problem Solving Multiplication and Division – Share and Show – Page No. 41

Question 1.
To make concrete mix, Monica pours 34 pounds of cement, 68 pounds of sand, 14 pounds of small pebbles, and 19 pounds of large pebbles into a large wheelbarrow. If she pours the mixture into 9 equalsize bags, how much will each bag weigh?
First, find the total weight of the mixture.
____ pounds

Answer:
135 pounds

Explanation:
34 + 68 + 14 + 19 = 135

Question 1.
Then, divide the total by the number of bags. Break the total into two simpler numbers to make the division easier, if necessary.
Finally, find the quotient and solve the problem.
So, each bag will weigh _ pounds.
____ pounds

Answer:
15 pounds

Explanation:
now, calculate 135/9 = 15 pounds.

Go Math Lesson 1.10 5th Grade Answer Key Question 2.
What if Monica pours the mixture into 5 equal-size bags? How much will each bag weigh?
____ pounds

Answer:
27 poundsMultiply by 1-Digit Numbers Lesson 1.6

Explanation:
135/5 = 27

Question 3.
Taylor is building doghouses to sell. Each doghouse requires 3 full sheets of plywood which Taylor cuts into new shapes. The plywood is shipped in bundles of 14 full sheets. How many doghouses can Taylor make from 12 bundles of plywood?
____

Answer:
56 doghouses

Explanation:
Taylor is building doghouses to sell. Each doghouse requires 3 full sheets of plywood which Taylor cuts into new shapes. The plywood is shipped in bundles of 14 full sheets.
(12 x 14)/3 = 168/3 = 56 doghouses

Question 4.
Eileen is planting a garden. She has seeds for 60 tomato plants, 55 sweet corn plants, and 21 cucumber plants. She plants them in 8 rows, with the same number of plants in each row. How many seeds are planted in each row?
____ seeds / row

Answer:
17 seeds

Explanation:
Eileen is planting a garden. She has seeds for 60 tomato plants, 55 sweet corn plants, and 21 cucumber plants. She plants them in 8 rows, with the same number of plants in each row.
60 + 55 + 21 = 136
136/8 = 17

Problem Solving Multiplication and Division – On Your Own – Page No. 42

Question 5.
Starting on day 1 with 1 jumping jack, Keith doubles the number of jumping jacks he does every day. How many jumping jacks will Keith do on day 10?
____  jumping jack

Answer:
512 jumping jacks

Explanation:
She doubled the number so you’re supposed to multiply by 2.
On day 1, 1 jumping pack;
On day 2, 2 jumping packs;
On day 3, 2 x 2 = 4 jumping packs;
On day 4, 2 x 2 x 2 = 8 jumping packs;
On day 5, 2 x 2 x 2 x 2 = 16 jumping packs;
On day 6, 2 x 2 x 2 x 2 x 2 = 32 jumping packs;
On day 7, 2 x 2 x 2 x 2 x 2 x 2 = 64 jumping packs;
On day 8, 2 x 2 x 2 x 2 x 2 x 2 x 2 = 128 jumping packs;
On day 9, 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 256 jumping packs;
On day 10, 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 512 jumping packs;
512 jumping jacks

Multiply by 1-Digit Numbers Lesson 1.6 Question 6.
Starting in the blue square, in how many different ways can you draw a line that passes through every square without picking up your pencil or crossing a line you’ve already drawn? Show the ways.
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Problem Solving Multiplication and Division img 18
____ ways

Answer:
8 ways

Explanation:
Grade 5 Chapter 1 Image 9
8 ways

Question 7.
On April 11, Millie bought a lawn mower with a 50-day guarantee. If the guarantee begins on the date of purchase, what is the first day on which the mower will no longer be guaranteed?
__________

Answer:
May 31

Explanation:
The guarantee begins on April 11. April has 30 days. So, we have 20 days of the guarantee in April.
May has 31 days. So, we have 30 days of the guarantee in May.
Therefore, the last day of the guarantee is May 31.

Question 8.
A classroom bulletin board is 7 feet by 4 feet. If there is a picture of a student every 6 inches along the edge, including one in each corner, how many pictures are on the bulletin board?
____ pictures

Answer:
40 pictures

Explanation:
2 pictures per foot, so that’s 14 pics along the top and bottom (counting the corners), and
6 pictures along each side (not counting the corners)
14+14+6+6 = 40

Question 9.
Dave wants to make a stone walkway. The rectangular walkway is 4 feet wide and 12 feet long. Each 2 foot by 2 foot stone covers an area of 4 square feet. How many stones will Dave need to make his walkway?
____ stones

Answer:
12 stones

Explanation:
Area of walkway = 4 x 12 = 48 square feet
Area of 1 stone = 2 x 2 = 4 square feet
48/4 = 12 stones.

Question 10.
Test Prep Dee has 112 minutes of recording time. How many 4-minute songs can she record?
Options:
A. 28
B. 27
C. 18
D. 17

Answer:
A. 28

Explanation:
Dee has 112 minutes of recording time. 112/4 = 28

Numerical Expressions – Share and Show – Page No. 45

Circle the expression that matches the words.

Question 1.
Teri had 18 worms. She gave 4 worms to Susie and 3 worms to Jamie.
(18 – 4) + 3         18 – (4 + 3)
__________

Answer:
18 – (4 + 3)

Explanation:
Teri had 18 worms. She gave 4 worms.
18 – 4 = 14.
3 worms to Jamie
14 – 3 = 11.
(18 – 4) + 3 = 14 + 3 = 17 not equal to 11;
18 – (4 + 3) = 18 – 7 = 11 = 11

Question 2.
Rick had $8. He then worked 4 hours for $5 each hour.
$8 + (4 × $5)       ($8 + 4) × $5
__________

Answer:
$8 + (4 × $5)

Explanation:
Rick had $8. He then worked 4 hours for $5 each hour = 4 x $5 = $20;
$20 +$8 =$28.
$8 + (4 × $5) = 8 + 20 = $28 = $28.

Write an expression to match the words.

Question 3.
Greg drives 26 miles on Monday and 90 miles on Tuesday.
Type below:
__________

Answer:
26 + 90 = 116 miles

Explanation:
Greg drives 26 miles on Monday and 90 miles on Tuesday. 26 + 90 = 116 miles

Question 4.
Lynda has 27 fewer fish than Jack. Jack has 80 fish.
Type below:
__________

Answer:
80 – 27 = 53

Explanation:
Lynda has 27 fewer fish than Jack. Jack has 80 fish. 80 – 27 = 53

Write words to match the expression.

Question 5.
34 – 17
Type below:
__________

Answer:
Anna has 17 fewer apples than Jack. Jack has 34 apples.

Explanation:
34 – 17 = 17.
Anna has 17 fewer apples than Jack. Jack has 34 apples.

Question 6.
6 × (12 – 4)
Type below:
__________

Answer:
Teri had 12 worms. She gave 4 worms to Susie. She sell the remaining worms for $6 each.

Explanation:
Teri had 12 worms. She gave 4 worms to Susie. She sell the remaining worms for $6 each.

On Your Own

Write an expression to match the words.

Question 7.
José shared 12 party favors equally among 6 friends.
Type below:
__________

Answer:
12/6 = 2

Explanation:
José shared 12 party favors equally among 6 friends. 12/6 = 2

Question 8.
Braden has 14 baseball cards. He finds 5 more baseball cards.
Type below:
__________

Answer:
14 + 5 = 19

Explanation:
Braden has 14 baseball cards. He finds 5 more baseball cards. 14 + 5 = 19

Question 9.
Isabelle bought 12 bottles of water at $2 each.
Type below:
__________

Answer:
12 x $2 = $24

Explanation:
Isabelle bought 12 bottles of water at $2 each. 12 x $2 = $24

Question 10.
Monique had $20. She spent $5 on lunch and $10 at the bookstore.
Type below:
__________

Answer:
20 – (5 + 10)

Explanation:
Monique had $20. She spent $5 on lunch and $10 at the bookstore. 20 – (5 + 10)

Write words to match the expression.

Question 11.
36 ÷ 9
Type below:
__________

Answer:
Anna shared 36 apples with 9 friends.

Question 12.
35 – (16 + 11)
Type below:
__________

Answer:
Monique had 35 balls. She gave 16 to her one frined and 11 to other friend.

Draw a line to match the expression with the words.

Question 13.
Fred catches 25 fish. Then he
releases 10 fish and catches 8 more.     •        •3 × (15 – 6)

Nick has 25 pens. He gives 10 pens to
one friend and 8 pens to another friend.  •     •15 – 6

Jan catches 15 fish and lets 6 fish go.       •     •25 – (10 + 8)

Libby catches 15 fish and lets 6 fish go
for three days in a row.                             •     •(25 – 10) + 8
Type below:
__________

Answer:
Fred catches 25 fish. Then he releases 10 fish and catches 8 more = (25 – 10) + 8
Nick has 25 pens. He gives 10 pens to one friend and 8 pens to another friend = 25 – (10 + 8)
Jan catches 15 fish and lets 6 fish go = 15 – 6
Libby catches 15 fish and lets 6 fish go for three days in a row = 3 × (15 – 6)

Numerical Expressions – Problem Solving – Page No. 46

Use the rule and the table for 14.
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Numerical Expressions img 19

Question 14.
Write a numerical expression to represent the total number of lemon tetras that could be in a 20-gallon aquarium.
_____ lemon tetras

Answer:
2 lemon tetras

Explanation:
From the given data, increase each inch of length, 1 gallon of water increases.
2 + 3 + 5 + 3 + 5 = 18 inches. So, 18 gallons of water are available in the aquarium. Add 1 lemon tetra to get the 20 gallons of water. So, in total there are 2 lemon tetra available.

Powers of 10 and Exponents Lesson 1.4 Answer Key Question 15.
Write a word problem for an expression that is three times as great as (15 + 7). Then write the expression.
Type below:
__________

Answer:
3 x (15 + 7)

Explanation:
Given that that is three times as great as (15 + 7)

Question 16.
What’s the Question? Lu has 3 swordtails in her aquarium. She buys 2 more swordtails.
Type below:
__________

Answer:
3 + 2 = 5

Explanation:
Lu has 3 swordtails in her aquarium. She buys 2 more swordtails. So, 3 + 2 = 5 swordtails

Question 17.
Tammy gives 45 stamps to her 9 friends. She shares them equally with her friends. Write an expression to match the words. How many stamps does each friend get?
_____ stamps

Answer:
45/9 = 5 stamps

Explanation:
Tammy gives 45 stamps to her 9 friends. 45/9 = 5.

Question 18.
Test Prep Josh has 3 fish in each of the 5 buckets. Then he releases 4 fish. Which expression matches the words?
Options:
a. (3 × 4) – 5
b. (5 × 4) – 3
c. (5 × 3) – 4
d. (5 – 3) × 4

Answer:
c. (5 × 3) – 4

Explanation:
Josh has 3 fish in each of 5 buckets. 3 x 5.
Then he releases 4 fish. (3 x 5) – 4

Evaluate Numerical Expressions – Share and Show – Page No. 49

Evaluate the numerical expression.

Question 1.
10 + 36 ÷ 9
_____

Answer:
14

Explanation:
10 + 36 ÷ 9 = 10 + (36 ÷ 9) = 10 + 4 = 14

Question 2.
10 + (25 – 10) ÷ 5
_____

Answer:
13

Explanation:
10 + (25 – 10) ÷ 5 = 10 + 15 ÷ 5 = 10 + (15 ÷ 5) = 10 + 3 = 13

Question 3.
9 – (3 × 2) + 8
_____

Answer:
11

Explanation:
9 – (3 × 2) + 8 = 9 – 6 + 8 = 3 + 8 = 11

On Your Own

Evaluate the numerical expression.

Question 4.
(4 + 49) – 4 × 10
_____

Answer:
13

Explanation:
(4 + 49) – 4 × 10 = 53 – 4 x 10 = 53 – (4 x 10) = 53 – 40 = 13

Question 5.
5 + 17 – 100 ÷ 5
_____

Answer:

Explanation:
5 + 17 – 100 ÷ 5 = (5 + 17) – (100 ÷ 5) = 22 – 20 = 2

Question 6.
36 – (8 + 5)
_____

Answer:
23

Explanation:
36 – (8 + 5) = 36 – 13 = 23

Question 7.
125 – (68 + 7)
_____

Answer:
50

Explanation:
125 – (68 + 7) = 125 – 75 = 50

Question 8.
(4 × 6) – 12
_____

Answer:
12

Explanation:
(4 × 6) – 12 = 24 – 12 = 12

Question 9.
3 × (22 – 2)
_____

Answer:
60

Explanation:
3 × (22 – 2) = 3 x 20 = 60

Question 10.
23 + (16 – 7)
_____

Answer:
32

Explanation:
23 + (16 – 7) = 23 + 9 = 32

Question 11.
(25 – 4) ÷ 3
_____

Answer:
7

Explanation:
(25 – 4) ÷ 3 = 21 ÷ 3 = 7

Rewrite the expression with parentheses to equal the given value.

Question 12.
100 – 30 ÷ 5
value: 14
Type below:
__________

Answer:
(100 – 30) ÷ 5 = 14

Explanation:
100 – 30 ÷ 5 = (100 – 30) ÷ 5 = 70 ÷ 5 = 14

Question 13.
12 + 17 – 3 × 2
value: 23
Type below:
__________

Answer:
23

Explanation:
(12 + 17) – (3 × 2) = 29 – 6 = 23

Question 14.
9 + 5 ÷ 5 + 2
value: 12
Type below:
__________

Answer:
12

Explanation:
9 + (5 ÷ 5) + 2 = 9 + 1 + 2 = 12

Evaluate Numerical Expressions – UNLOCK the Problem – Page No. 50

Question 15.
A movie theater has 4 groups of seats. The largest group of seats, in the middle, has 20 rows, with 20 seats in each row. There are 2 smaller groups of seats on the sides, each with 20 rows and 6 seats in each row. A group of seats in the back has 5 rows, with 30 seats in each row. How many seats are in the movie theater?
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Evaluate Numerical Expressions img 20
a. What do you need to know?
Type below:
__________

Answer:
We have to know the number of seats in each row to calculate the total number of seats.

Question 15.
b. What operation can you use to find the number of seats in the back group of seats? Write the expression.
Type below:
__________

Answer:
A group of seats in the back has 5 rows with 30 seats in each row. So, to calculate the number of seats, we can use multiplication.

Question 15.
c. What operation can you use to find the number of seats in both groups of side seats? Write the expression.
Type below:
__________

Answer:
2 x (20 x 6) = 2 x 120 = 240

Question 15.
d. What operation can you use to find the number of seats in the middle group? Write the expression.
Type below:
__________

Answer:
20 x 20 = (2 x 2) x (10 x 10) = 4 x 100 = 400

Question 15.
e. Write an expression to represent the total number of seats in the theater.
Type below:
__________

Answer:
(20 x 20) + (2 x 20 x 6) + (5 x 30)

Question 15.
f. How many seats are in the theater? Show the steps you use to solve the problem.
_____ seats

Answer:
(20 x 20) + (2 x 20 x 6) + (5 x 30) = 400 + 240 + 150 = 640 + 150 = 790

Place Value Lessons 5th Grade Question 16.
Test Prep In the wild, an adult giant panda eats about 30 pounds of food each day. Which expression shows how many pounds of food 6 pandas eat in 3 days?
Options:
a. 3 + (30 × 6)
b. 3 × (30 × 6)
c. (30 × 6) ÷ 3
d. (30 × 6) – 3

Answer:
b. 3 × (30 × 6)

Explanation:
1 panda eats 30 pounds of food each day.
for 3 days, 3 x 30 = 90
1 panda eats 90 pounds of food in 3 days.
6 pandas can eat 90 x 6 = 540 pounds.
3 + (180) = 183 not equal to 540 pounds.
3 x (30 x 6) = 3 x (180) = 540

Question 17.
Test Prep Which expression has a value of 6?
Options:
a. (6 ÷ 3) × 4 + 8
b. 27 – 9 ÷ 3 × ( 4 + 1)
c. (18 + 12) × 6 – 4
d. 71 – 5 × (9 + 4)

Answer:
d. 71 – 5 × (9 + 4)

Explanation:
(6 ÷ 3) × 4 + 8 = 2 x 4 + 8 = 8 + 8 = 16
27 – 9 ÷ 3 × ( 4 + 1) = 27 – (9 ÷ 3) × 5 = 27 – 3 x 5 = 27 – 15 = 12
(18 + 12) × 6 – 4 = 180 – 4 = 176
71 – 5 × (9 + 4) = 71 – (5 x 13) = 71 – 65 = 6

Grouping Symbols – Share and Show – Page No. 53

Evaluate the numerical expression.

Question 1.
12 + [(15 – 5) + (9 – 3)]
12 + [10 + ____]
12 +____
____

Answer:
12 + [(15 – 5) + (9 – 3)]
12 + [10 + 6]
12 + 16
28

Question 2.
5 × [(26 – 4) – (4 + 6)]
____

Answer:
5 × [(26 – 4) – (4 + 6)]
5 x [22 – 10]
5 x 12 = 60

Question 3.
36 ÷ [(18 – 10) – (8 – 6)]
____

Answer:
36 ÷ [(18 – 10) – (8 – 6)]
36 ÷ [8 – 2]
36 ÷ 6 = 6

On Your Own

Evaluate the numerical expression.

Question 4.
4 + [(16 – 4) + (12 – 9)]
____

Answer:
4 + [(16 – 4) + (12 – 9)]
4 + [12 + 3]
4 + 15 = 19

Question 5.
24 – [(10 – 7) + (16 – 9)]
____

Answer:
24 – [(10 – 7) + (16 – 9)]
24 – [3 + 7] = 24 – 10 = 14

Question 6.
16 ÷ [(13 + 7) – (12 + 4)]
____

Answer:
16 ÷ [(13 + 7) – (12 + 4)]
16 ÷ [20 – 16]
16 ÷ 4 = 4

Question 7.
5 × [(7 – 2) + (10 – 8)]
____

Answer:
5 × [(7 – 2) + (10 – 8)]
5 x [5 + 2]
5 x 7 = 35

Question 8.
[(17 + 8) + (29 – 12)] ÷ 6
____

Answer:
[(17 + 8) + (29 – 12)] ÷ 6
[25 + 17] ÷ 6
42 ÷ 6 = 7

Question 9.
[(6 × 7) + (3 × 4)] – 28
____

Answer:
[(6 × 7) + (3 × 4)] – 28
[42 + 12] – 28
54 – 28 = 26

Question 10.
3 × {[(12 – 8) × 2] + [(11 – 9) × 3]}
____

Answer:
3 × {[(12 – 8) × 2] + [(11 – 9) × 3]}
3 x {[4 x 2] + [2 x 3]}
3 x {8 + 6}
3 x 14 = 42

Question 11.
{[(3 × 4) + 18] + [(6 × 7) – 27]} ÷ 5
____

Answer:
{[(3 × 4) + 18] + [(6 × 7) – 27]} ÷ 5
{[12 + 18] + [42 – 27]} ÷ 5
{30 + 15} ÷ 5
45 ÷ 5 = 9

Grouping Symbols – UNLOCK the Problem – Page No. 54

Question 12.
Dan has a flower shop. Each day he displays 24 roses. He gives away 10 and sells the rest. Each day he displays 36 carnations. He gives away 12 and sells the
rest. What expression can you use to find out how many roses and carnations Dan sells in a week?
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Place Value, Multiplication, and Expressions; Grouping Symbols img 21
a. What information are you given?
Type below:
__________

Answer:
Each day, Dan displays 24 roses (gives away 10 and sells the rest), and he displays 36 carnations (gives away 12 and selles the rest).

Question 12.
b. What are you being asked to do?
Type below:
__________

Answer:
We have to find out how many roses and carnations Dan sells in a week.

Question 12.
c. What expression shows how many roses Dan sells in one day?
Type below:
__________

Answer:
24 – 10 = 14 roses

Question 12.
d. What expression shows how many carnations Dan sells in one day?
Type below:
__________

Answer:
36 – 12 = 24 carnation

Question 12.
e. Write an expression to represent the total number of roses and carnations Dan sells in one day.
Type below:
__________

Answer:
(24 – 10) + (36 – 12) = 14 + 24 = 38 roses and carnations

Question 12.
f. Write the expression that shows how many roses and carnations Dan sells in a week.
Type below:
__________

Answer:
7 x ((24 – 10) + (36 – 12)) = 7 x (14 + 24) = 7 x 38 = 266 roses and carnations

Question 13.
Evaluate the expression to find out how many roses and carnations Dan sells in a week.
____ flowers

Answer:
7 x ((24 – 10) + (36 – 12))
7 x (14 + 24)
7 x 38 = 266 roses and carnations

Explanation:

Question 14.
Test Prep Which expression has a value of 4?
Options:
a. [(4 × 5) + (9 + 7)] + 9
b. [(4 × 5) + (9 + 7)] ÷ 9
c. [(4 × 5) – (9 + 7)] × 9
d. [(4 + 5) + (9 + 7)] – 9

Answer:
b. [(4 × 5) + (9 + 7)] ÷ 9

Explanation:
[(4 × 5) + (9 + 7)] + 9 = [20 + 16] + 9 = 36 + 9 = 45
[(4 × 5) + (9 + 7)] ÷ 9 = [20 + 16] ÷ 9 = 36 ÷ 9 = 4

Chapter Review/Test – Vocabulary – Page No. 55

Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Chapter Review/Test img 22

Question 1.
The ____ states that multiplying a sum by a number is the same as multiplying each addend in the sum by the number and then adding the products.
__________

Answer:
Distributive Property

Concepts and Skills

Complete the sentence.

Question 2.
7,000 is 10 times as much as _____

Answer:
700

Explanation:
Let the unknown number is S.
7,000 = 10S
S = 7,000/10 = 700.
7,000 is 10 times as much as 700.

Question 3.
50 is \(\frac{1}{10}\) of _____

Answer:
500

Explanation:
Let the unknown number is S.
50 = \(\frac{1}{10}\) S
S = 50 X 10 = 500

Complete the equation, and tell which property you used.

Question 4.
4 × (12 + 14) =
Type below:
________

Answer:
104; Distributive Property of Multiplication

Explanation:
4 × (12 + 14) = (4 x 12) + (4 x 14) = 48 + 56 = 104; Distributive Property of Multiplication

Question 5.
45 + 16 =__ + 45
Type below:
Type below:
________

Answer:
45 + 16 = 16 + 45; Commutative Property of Addition

Explanation:
45 + 16 = 16 + 45; Commutative Property of Addition

Find the value.

Question 6.
102 = _____

Answer:
100

Explanation:
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;

Question 7.
3 × 104 = _____

Answer:
30,000

Explanation:
3 × 104
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
104 = 10 x 10 x 10 x 10 = 10,000;
3 x 10,000 = 30,000

How do you use Place Value and Patterns to Solve Problems Question 8.
8 × 103 = _____

Answer:
8,000

Explanation:
8 × 103
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
8 x 1,000 = 8,000

Estimate. Then find the product.

Question 9.
Estimate:
5 7 9
×   6
———-
Estimate: _____ Product: _____

Answer:
Estimate: 3,600
Product: 3,474

Explanation:
Estimate: 579 is close to 600;
600 x 6 = 3,600
579 x 6
6 x 9 =54; add ones and regroup tens
6 x 7 = 42; 42 + 5 = 47; add tens and regroup hundreds
6 x 5 = 30; 30 + 4 = 34
So, 3,474 is the product

Question 10.
Estimate:
7,316
×    6
———-
Estimate: _____ Product: _____

Answer:
Estimate: 42,000
Product: 43,986

Explanation:
Estimate: 7,316 is close to 7,000;
7,000 x 6 = 42,000
7,316 x 6
6 x 6 = 36; add ones and regroup tens
6 x 1 = 6; 6 + 3 = 18; add tens and regroup hundreds
6 x 3 = 18; 18 + 1 = 19; add hundreds and regroup thousads
6 x 7 = 42; 42 + 1 = 43
So, 43,986 is the product

Question 11.
Estimate:
4 3 6
× 3 2
———-
Estimate: _____ Product: _____

Answer:
Estimate: 12,000
Product: 13,952

Explanation:
Estimate: 436 is close to 400; 32 is close to 30
400 x 30 = 12,000
436 x 32;
436 x 2 = 872
436 x 30 = 13,080
13,080 + 872 = 13,952

Use multiplication and the Distributive Property to find the quotient.

Question 12.
54 ÷ 3 = _____

Answer:
18

Explanation:
54 ÷ 3
(27 + 27) ÷ 3 = (27 ÷ 3) + (27 ÷ 3) = 9 + 9 = 18
3 x 18 = 3 x (9+ 9) = (3 x 9) + (3 x 9) = 27 + 27 = 54

Question 13.
90 ÷ 5 = _____

Answer:
18

Explanation:
90 ÷ 5
(45 + 45) ÷ 5 = (45 ÷ 5) + (45 ÷ 5) = 9 + 9 = 18
5 x 18 = 5 x (9+ 9) = (5 x 9) + (5 x 9) = 45 + 45 = 90

Question 14.
96 ÷ 6 = _____

Answer:

Explanation:
96 ÷ 6
(48 + 48) ÷ 6 = (48 ÷ 6) + (48 ÷ 6) = 8 + 8 = 16
6 x 16 = 6 x (8 + 8) = (6 x 8) + (6 x 8) = 48 + 48 = 96

Evaluate the numerical expression.

Question 15.
42 − (9 + 6) = _____

Answer:
42 − (9 + 6)
42 – 15
27

Question 16.
15 + (22 − 4) ÷ 6 = _____

Answer:
15 + (22 − 4) ÷ 6
15 + (18 ÷ 6)
15 + 3
18

Question 17.
6 × [(5 × 7) − (7 + 8)] = _____

Answer:
6 × [(5 × 7) − (7 + 8)]
6 x [35 – 15]
6 x [20]
120

Chapter Review/Test – Page No. 56

Fill in the bubble completely to show your answer.

Question 18.
Erica’s high score on her new video game is 30,000 points. Maria’s high score is \(\frac{1}{10}\) of Erica’s. How many points did Maria score?
Options:
A. 30
B. 300
C. 3,000
D. 30,000

Answer:
C. 3,000

Explanation:
Erica’s high score on her new video game is 30,000 points. Maria’s high score is \(\frac{1}{10}\) of Erica’s.
30,000 x \(\frac{1}{10}\) = 3,000

Question 19.
Rich makes $35 a week mowing lawns in his neighborhood. Which expression can be used to show how much money he makes in 8 weeks?
Options:
A. (8 × 30) + (8 × 5)
B. (8 × 30) + (8 × 5)
C. (8 + 30) × (8 + 5)
D. (8 × 30) × (8 × 5)

Answer:
B. (8 × 30) + (8 × 5)

Explanation:
Rich makes $35 a week mowing lawns in his neighborhood.
8 x $35 = 8 x (30 + 5) = (8 x 30) + (8 x 5)

Question 20.
Mr. Rodriguez bought a supply of 20 reams of printer paper. Each ream contains 500 sheets of paper. How many sheets of printer paper are there?
Options:
A. 1,000
B. 5,000
C. 10,000
D. 100,000

Answer:
C. 10,000

Explanation:
Mr. Rodriguez bought a supply of 20 reams of printer paper. Each ream contains 500 sheets of paper.
500 x 20 = 10,000

Question 21.
Harvester ants are common in the southwestern United States. A single harvester ant colony may have as many as 90,000 members. What is that number written as a whole number multiplied by a power of ten?
Options:
A. 9 × 104
B. 9 × 103
C. 9 × 102
D. 9 × 101

Answer:
A. 9 × 104

Explanation:
Harvester ants are common in the southwestern United States. A single harvester ant colony may have as many as 90,000 members.
90,000
100 = 1;
101 = 1 x 10 = 10;
102 = 10 x 10 = 100;
103 = 10 x 10 x 10 = 1,000;
104 = 10 x 10 x 10 x 10 = 10,000;
9 x 10,000 = 90,000 = 9 x 104

Chapter Review/Test – Page No. 57

Fill in the bubble completely to show your answer.

Question 22.
Megan used the following expression to find the quotient of a division problem.
(4 × 12) + (4 × 6)
What was the division problem and the quotient?
Options:
A. 24 ÷ 4 = 6
B. 48 ÷ 4 = 12
C. 64 ÷ 4 = 16
D. 72 ÷ 4 = 18

Answer:
D. 72 ÷ 4 = 18

Explanation:
Megan used (4 × 12) + (4 × 6)
4 x (12 + 6)
4 x 18 = 72
72 ÷ 4 = 18

Question 23.
It is 1,325 feet from Kinsey’s house to her school. Kinsey walks to school each morning and gets a ride home each afternoon. How many feet does Kinsey walk to school in 5 days?
Options:
A. 6,725 feet
B. 6,625 feet
C. 6,525 feet
D. 5,625 feet

Answer:
B. 6,625 feet

Explanation:
It is 1,325 feet from Kinsey’s house to her school. Kinsey walks to school each morning and gets a ride home each afternoon.
1,325 feet x 5 = 6,625 feet

Go Math Grade 5 Lesson 1.10 Question 24.
An adult elephant eats about 300 pounds of food each day. Which expression shows how many pounds of food a herd of 12 elephants eats in 5 days?
Options:
A. 5 + (300 × 12)
B. 5 × (300 × 12)
C. (300 × 12) ÷ 5
D. (300 × 12) − 5

Answer:
B. 5 × (300 × 12)

Explanation:
An adult elephant eats about 300 pounds of food each day.
(300 x 12)
In 5 days, 5 × (300 × 12)

Question 25.
Carla can type 265 characters a minute on her computer keyboard. At that rate, how many characters can she type in 15 minutes?
Options:
A. 2,975
B. 3,875
C. 3,905
D. 3,975

Answer:
D. 3,975

Explanation:
Carla can type 265 characters a minute on her computer keyboard.
In 15 minutes, 265 x 15 = 3,975

Chapter Review/Test – Page No. 58

Constructed Response

Question 26.
Donavan copied the problem below from the board. He missed one of the numbers needed to show his work. What number is missing in his work? Explain how you found the missing number
Go Math Grade 5 Answer Key Chapter 1 Place Value, Multiplication, and Expressions Chapter Review/Test img 23
17 × 5 = ( ______ +7) × 5
= ( ______ × 5) + (7 × 5)

Answer:
Missing number is 10. Using the Distributive Property, the sum of the two number within the () has to be equal to the other factor 17.
10 + 7 = 17
17 × 5 = ( 10 +7) × 5
= ( 10 × 5) + (7 × 5)

Performance Task

Question 27.
Drew’s weekly allowance is $8.00. His friend Jan’s weekly allowance is $10. Drew spends $3 a week and Jan spends $4 a week.
A. Write two expressions to show how much money each person has at the end of the week. Use parentheses.
Drew has __ .
Jan has __ .
Type below:
__________

Answer:
Drew has ($8 – $3) .
Jan has ($10 – $4).

Question 27.
B. Drew and Jan decide that they want to put their money together to buy a video game. Write an expression that shows how much they can save each week. Explain.
Type below:
__________

Answer:
(8 – 3) + (10 – 4); Add the amount of money Drew and Jan have at the end of the week. This equals the amount they can save a week.

Question 27.
C. The video game Drew and Jan want to buy costs $55. Write an expression to show how many weeks it will take them to save enough to buy the video game. Use parentheses and brackets in your expression. Then evaluate the expression.
_____ weeks

Answer:
55 ÷ [(8 – 3) +(10 – 4)]
55 ÷ [5 + 6]
55 ÷ 11
5
It will take them 5 weeks to save the money from the game.

Conclusion:

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go-math-grade-6-answer-key-chapter-3-understand-positive-and-negative-numbers

Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers

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Go Math Grade 6 Chapter 3 Understand Positive and Negative Numbers Answer Key

To get practical knowledge, it is mandatory to practice with the Grade 6 Chapter 3 Solution key. The easy-solving of math problems will help you to understand all the difficult problems. So, begin your practice now and be on the top list to score good marks in the exam.

Lesson 1: Understand Positive and Negative Numbers

Lesson 2: Compare and Order Integers

Lesson 3: Rational Numbers and the Number Line

Lesson 4: Compare and Order Rational Numbers

Mid-Chapter Checkpoint

Lesson 5: Absolute Value

Lesson 6: Compare Absolute Values

Lesson 7: Rational Numbers and the Coordinate Plane

Lesson 8: Ordered Pair Relationships

Lesson 9: Distance on the Coordinate Plane

Lesson 10: Problem Solving • The Coordinate Plane

Chapter 3 Review/Test

Share and Show – Page No. 141

Graph the integer and its opposite on a number line.

Question 1.
−7
Type below:
__________

Answer:
7

Explanation:
The opposite number of -7 is 7

Question 2.
9
Type below:
__________

Answer:
-9

Explanation:
The opposite number of 9 is -9

Name the integer that represents the situation, and tell what 0 represents in that situation.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 1

Question 3.
Type below:
__________

Answer:
Integer: 24
0 represents: neither gaining nor losing points

Explanation:
Kerri gained 24 pounds during a round of the game show. So, he has a positive integer.

Question 4.
Type below:
__________

Answer:
Integer: -5
0 represents: Ben neither gains nor loses during the summer

Explanation:
Ben lost 5 points during the summer. He has a negative integer.

Question 5.
Type below:
__________

Answer:
Integer: 35
0 represents No changes in her savings account.

Explanation:
Marcy deposited $35 in her savings account. She has a positive integer.

On Your Own

Write the opposite of the integer.

Question 6.
−98
Type below:
__________

Answer:
98

Explanation:
The integer −98 is on the left side of 0.
So, the opposite of -98 is 98

Question 7.
0
Type below:
__________

Answer:
0

Explanation:
Opposite of 0 is 0

Ordering Positive and Negative Integers Answer Key Question 8.
−53
Type below:
__________

Answer:
53

Explanation:
The integer −53 is on the left side of 0.
So, the opposite of -53 is 53

Name the integer that represents the situation, and tell what 0 represents in that situation.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 2

Question 9.
Type below:
__________

Answer:
Integer: $850
0 represents: Desmond neither gains nor loses at his summer job

Question 10.
Type below:
__________

Answer:
Integer: -300
0 represents: No change from his checking point

Question 11.
Type below:
__________

Answer:
Integer: 2
0 represents: No change of protons than electrons

Write the opposite of the opposite of the integer.

Question 12.
−23
Type below:
__________

Answer:
-23

Explanation:
The opposite integer of the -23 is 23
The opposite integer of the 23 is -23.
So, the opposite of the opposite of the integer -23 is -23.

Question 13.
17
Type below:
__________

Answer:
17

Explanation:
The opposite integer of the 17 is -17
The opposite integer of the -17 is 17.
So, the opposite of the opposite of the integer 17 is 17.

Question 14.
−125
Type below:
__________

Answer:
-125

Explanation:
The opposite integer of the -125 is 125
The opposite integer of the 125 is -125.
So, the opposite of the opposite of the integer -125 is -125.

Question 15.
Suppose you know a certain number’s distance from zero on the number line. Explain how you could find the number’s distance from its opposite.
Type below:
__________

Answer:
The distance between a number’s place on the number line and 0 is called the number’s [absolute value]. To write the absolute value of a number, use short vertical lines (|) on either side of the number. For example, the absolute value of −5 is written |−5|

Problem Solving + Applications – Page No. 142

Wind makes the air temperature seem colder. The chart gives the wind chill temperature (what the temperature seems like) at several air temperatures and wind speeds. Use the chart for 16–18.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 3

Question 16.
At 6 a.m., the air temperature was 20°F and the wind speed was 55 mi/hr. What was the wind chill temperature at 6 a.m.?
Type below:
__________

Answer:
At 6 a.m., the air temperature was 20°F and the wind speed was 55 mi/hr.
The winds chill temperature at 6 a.m. is -4

Question 17.
At noon, the air temperature was 15°F and the wind speed was 45 mi/hr. At what air temperature and wind speed would the wind chill temperature be the opposite of what it was at noon?
Type below:
__________

Answer:
If the air temperature was 15°F and the wind speed was 45 mi/hr, the wind chill temperature is -9. The opposite number of -9 is 9.
So, at the air temperature was 25°F and the wind speed was 25 mi/hr, the wind chill temperature is the opposite of what it was at noon.

Question 18.
The wind was blowing 35 mi/hr in both Ashton and Fenton. The wind chill temperatures in the two towns were opposites. If the air temperature in Ashton was 25°F, what was the air temperature in Fenton?
Type below:
__________

Answer:
The wind was blowing 35 mi/hr in both Ashton and Fenton.
If the air temperature in Ashton was 25°F, the wind chill temperature is 7.
The wind chill temperatures in the two towns were opposites.
So, the wind chill temperature in Fenton is -7. So, the air temperature in Fenton was 15°F.

Question 19.
Sense or Nonsense? Claudia states that the opposite of any integer is always a different number than the integer. Is Claudia’s statement sense or nonsense? Explain.
Type below:
__________

Answer:
Claudia is correct.
Because the opposite of any integer is always a different number than the integer.
Example: The opposite of 7 is -7.

Question 20.
For numbers 20a−20d, choose Yes or No to indicate whether the situation can be represented by a negative number.
20a. Death Valley is located 282 feet below sea level.
20b. Austin’s golf score was 3 strokes below par.
20c. The average temperature in Santa Monica in August is 75°F.
20d. Janai withdraws $20 from her bank account.
20a. __________
20b. __________
20c. __________
20d. __________

Answer:
20a. Yes
20b. Yes
20c. No
20d. Yes

Understand Positive and Negative Numbers – Page No. 143

Graph the integer and its opposite on a number line.

Question 1.
−6
Type below:
__________

Answer:
6
grade 6 chapter 3 image 1

Explanation:
The opposite number of -6 is 6

Question 2.
3
Type below:
__________

Answer:
-3
grade 6 chapter 3 image 2

Explanation:
The opposite number of -3 is 3

Question 3.
10
Type below:
__________

Answer:
-10
grade 6 chapter 3 image 3

Explanation:
The opposite number of 10 is -10

Question 4.
−8
Type below:
__________

Answer:
8
grade 6 chapter 3 image 4

Explanation:
The opposite number of -8 is 8

Name the integer that represents the situation, and tell what 0 represents in that situation
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 4

Question 5.
Type below:
__________

Answer:
Integer: -60
0 represents: No changes in the account balance

Explanation:

Question 6.
Type below:
__________

Answer:
Integer: 12
0 represents: neither gaining nor losing points

Explanation:

Write the opposite of the opposite of the integer.

Question 7.
−20
Type below:
__________

Answer:
-20

Explanation:
The opposite integer of the -20 is 20
The opposite integer of the 20 is -20.
So, the opposite of the opposite of the integer -20 is -20

Question 8.
4
Type below:
__________

Answer:
4

Explanation:
The opposite integer of the 4 is -4
The opposite integer of the -4 is 4.
So, the opposite of the opposite of the integer -4 is 4.

Question 9.
95
Type below:
__________

Answer:
95

Explanation:
The opposite integer of the 95 is -95
The opposite integer of the -95 is 95.
So, the opposite of the opposite of the integer 95 is 95.

Question 10.
−63
Type below:
__________

Answer:
-63

Explanation:
The opposite integer of the -63 is 63
The opposite integer of the 63 is -63.
So, the opposite of the opposite of the integer -63 is -63.

Problem Solving

Question 11.
Dakshesh won a game by scoring 25 points. Randy scored the opposite number of points as Dakshesh. What is Randy’s score?
Type below:
__________

Answer:
Randy’s score -25.

Explanation:
Dakshesh won a game by scoring 25 points. Randy scored the opposite number of points as Dakshesh.
The opposite number of 25 is -25

Question 12.
When Dakshesh and Randy played the game again, Dakshesh scored the opposite of the opposite of his first score. What is his score?
Type below:
__________

Answer:
25 points

Explanation:
When Dakshesh and Randy played the game again, Dakshesh scored the opposite of the opposite of his first score.
The opposite of the 25 is -25.
The opposite of the -25 is 25.
The opposite of the opposite of his first score is 25

Question 13.
Give three examples of when negative numbers are used in daily life.
Type below:
__________

Answer:
1) negative numbers in weather reports and on food packaging. The temperature -5°C is ‘negative five degrees’ and it means 5 degrees below zero.
2) The floors As you go down in a lift, starting on the third floor you’ll see:
3, 2, 1, 0, -1, -2.
In this example, building, -2 is the second-floor underground
3) When you spend more money than you have in your bank account it shows up as a negative number.

Lesson Check – Page No. 144

Name the integers that represent each situation.

Question 1.
During their first round of golf, Imani was 7 strokes over par and Peter was 8 strokes below par.
Type below:
__________

Answer:
In the first round of golf, Imani has scored 7 strokes over par. So, it is represented by 7.
Peter was scored 8 strokes below par. So, it is represented by -8.
Therefore, the answer is 7 and -8.

Question 2.
Wyatt earned $15 babysitting on Saturday. Wilson spent $12 at the movies.
Type below:
__________

Answer:
He has $3 dollars left because you take 12 from 15 and you get 3
$15 – $12 = $3

Spiral Review

Question 3.
Mr. Nolan’s code for his ATM card is a 4-digit number. The digits of the code are the prime factors of 84 listed from least to greatest. What is the code for Mr. Nolan’s ATM card?
Type below:
__________

Answer:
2237

Explanation:
Mr.Nolan’s code for his ATM card is a 4- digit number.
The digits of the code are the prime factors of 84 listed from least to greatest.
In order to find the code, we have to find the prime factors of 84.
The prime factors of 84 are 2,2,3 and 7.
Therefore, the code=2237

Question 4.
Over a four-year period, a tree grew 2.62 feet. If the tree grows at a constant rate, how many feet does the tree grow each year?
Type below:
__________

Answer:
0.655 feet

Explanation:
Each year the tree grows
( 2.62 ÷ 4 ) feet
= 0.655 feet

Question 5.
Omarion has \(\frac{9}{10}\) of the pages in a book remaining to read for school. He reads \(\frac{2}{3}\) of the remaining pages over the weekend. What fraction of the book does Omarion read over the weekend?
Type below:
__________

Answer:
\(\frac{3}{5}\)

Explanation:
Omarion has 9/10 of the pages in a book remaining to read for school and he reads 2/3 of the remaining pages over the weekend.
The fraction of the book trade over the weekend = the fraction of the pages read over the weekend multiplied by the fraction of the book that is remaining to be read.
Therefore, the fraction of the book that Omarion trad over the weekend is 2/3 × 9/10 = 3/5
Thus, the required fraction of the book that Omarion trad over the weekend is 3/5

Question 6.
Marianne has \(\frac{5}{8}\) pound of peas. She cooks \(\frac{2}{3}\) of those peas for 5 people. If each person is served an equal amount, how many peas did each person get?
Type below:
__________

Answer:
\(\frac{1}{12}\) pounds

Explanation:
Marianne has \(\frac{5}{8}\) pound of peas. IShe cooks \(\frac{2}{3}\) of those peas for 5 people.
Marianne cooks 5/8 × 2/3 = 5/12 pounds.
(5/12)/5 = 1/12 pounds

the answer is

Share and Show – Page No. 147

Compare the numbers. Write < or >.

Question 1.
8 _____ 6

Answer:
–8 < 6

Explanation:
-8 is to the left of 6 on the number line.
So, -8 is less than 6.

Question 2.
1 _____ 8

Answer:
1 > –8

Explanation:
1 is to the right of -8 on the number line.
So, 1 is greater than -8.

Question 3.
4 _____ 0

Answer:
-4 < 0

Explanation:
-4 is to the left of 0 on the number line.
So, -4 is less than 0.

Question 4.
3 _____ 7

Answer:
3 > -7

Explanation:
3 is to the right of -7 on the number line.
So, 3 is greater than -7.

Order the numbers from least to greatest.

Question 5.
4, 3, 7
Type below:
__________

Answer:
-7, -3, 4

Explanation:
-7 is to the left of -3 on the number line. -3 is to the left of 4 on the number line.
So, -7 < -3 < 4

Question 6.
0, 1, 3
Type below:
__________

Answer:
-1, 0, 3

Explanation:
-1 is to the left of 0 on the number line. 0 is to the left of 3 on the number line.
So, -1 < 0 < 3

Question 7.
5, 3, 9
Type below:
__________

Answer:
-9, -5, -3

Explanation:
-9 is to the left of -5 on the number line. -5 is to the left of -3 on the number line.
So, -9 < -5 < -3

Order the numbers from greatest to least.

Question 8.
1, 4, 2
Type below:
__________

Answer:
2, -1, -4

Explanation:
2 is to the right of -1 on the number line. -1 is to the right of -4 on the number line.
So, 2 > -1 > -4

Question 9.
5, 0, 10
Type below:
__________

Answer:
10, 5, 0

Explanation:
10 is to the right of 5 on the number line. 5 is to the right of 0 on the number line.
So, 10 > 5 > 0

3.2 Additional Practice Answer Key 6th Grade Question 10.
5, 4, 3
Type below:
__________

Answer:
-3, -4, -5

Explanation:
-3 is to the right of -4 on the number line. -4 is to the right of -5 on the number line.
So, -3 > -4 > -5

On Your Own

Order the numbers from least to greatest.

Question 11.
2, 1, 1
Type below:
__________

Answer:
-1, 1, 2

Explanation:
-1 is to the left of 1 on the number line. 1 is to the left of 2 on the number line.
So, -1 < 1 < 2

Question 12.
6, 12, 30
Type below:
__________

Answer:
-12, -6, 30

Explanation:
-12 is to the left of -6 on the number line. -6 is to the left of 30 on the number line.
So, -12 < -6 < 30

Question 13.
15, 9, 20
Type below:
__________

Answer:
-20, -15, -9

Explanation:
-20 is to the left of -15 on the number line. -15 is to the left of -9 on the number line.
So, -20 < -15 < -9

Order the number from greatest to least.

Question 14.
13, 14, 14
Type below:
__________

Answer:
14, -13, -14

Explanation:
14 is to the right of -13 on the number line. -13 is to the right of -14 on the number line.
So, 14 > -13 > -14

Question 15.
20, 30, 40
Type below:
__________

Answer:
-20, -30, -40

Explanation:
-20 is to the right of -30 on the number line. -30 is to the right of -40 on the number line.
So, -20 > -30 > -40

Question 16.
9, 37, 0
Type below:
__________

Answer:
9, 0, -37

Explanation:
9 is to the right of 0 on the number line. 0 is to the right of -37 on the number line.
So, 9 > 0 > -37

Question 17.
Saturday’s low temperature was −6°F. Sunday’s low temperature was 3°F. Monday’s low temperature was −2°F. Tuesday’s low temperature was 5°F. Which day’s low temperature was closest to 0°F?
Type below:
__________

Answer:
Monday’s temperature was closest to 0°F

Explanation:
Saturday’s low temperature was −6°F. Sunday’s low temperature was 3°F. Monday’s low temperature was −2°F. Tuesday’s low temperature was 5°F.
-2 is closest to 0. So, Monday’s temperature was closest to 0°F.

Question 18.
Use Symbols Write a comparison using < or > to show that South America’s Valdes Peninsula (elevation −131 ft) is lower than Europe’s Caspian Sea (elevation −92 ft).
Type below:
__________

Answer:
South America’s Valdes Peninsula < Europe’s Caspian Sea

Explanation:
South America’s Valdes Peninsula (elevation −131 ft) is lower than Europe’s Caspian Sea (elevation −92 ft).
-131 < -92.
So, South America’s Valdes Peninsula < Europe’s Caspian Sea

Problem Solving + Applications – Page No. 148

What’s the Error?

Question 19.
In the game of golf, the player with the lowest score wins. Raheem, Erin, and Blake played a game of miniature golf. The table shows their scores compared to par.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 5
At the end of the game, they wanted to know who had won.
Look at how they solved the problem. Find their error.
STEP 1: 0 is greater than both −1 and −5. Since Raheem had the highest score, he did not win.
STEP 2: −1 is less than −5, so Blake’s score was less than Erin’s score. Since Blake had the lowest score, he won the game.
Correct the error by ordering the scores from least to greatest.
So, _____ won. _____ came in second. _____ came in third.
Describe the error that the players made.
Type below:
__________

Answer:
Step 2 is wrong.
In step 2, they mentioned that -1 is less than −5. But -1 is greater than -5.
So, Erin won. Blake came in second. Raheem came in third.

Question 20.
Jasmine recorded the low temperatures for 3 cities.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 6
Draw a dot on the number line to represent the low temperature of each city. Write the letter of the city above the dot.
Type below:
__________

Answer:
grade 6 chapter 3 image 5

Explanation:
6 > 2 > -4

Compare and Order Integers – Page No. 149

Compare the numbers. Write < or >.

Question 1.
4 ____ 5

Answer:
-4 > -5

Explanation:
-4 is to the right of -5 on the number line.
So, -4 is greater than -5.

Question 2.
0 ____ 1

Answer:
0 > -1

Explanation:
0 is to the right of -1 on the number line.
So, 0 is greater than -1.

Question 3.
4 ____ 6

Answer:
4 > -6

Explanation:
4 is to the right of -6 on the number line.
So, 4 is greater than -6.

Question 4.
9 ____ 8

Answer:
-9 < -8

Explanation:
-9 is to the left of -8 on the number line.
So, -9 is less than -8.

Question 5.
2 ____ 10

Answer:
2 > -10

Explanation:
2 is to the right of -10 on the number line.
So, 2 is greater than -10.

Question 6.
12 ____ 11

Answer:
-12 < -11

Explanation:
-12 is to the left of -11 on the number line.
So, -12 is less than -11.

Question 7.
1 ____ 10

Answer:
1 > -10

Explanation:
1 is to the right of -10 on the number line.
So, 1 is greater than -10.

Order the numbers from least to greatest.

Question 8.
3, 2, 7
Type below:
__________

Answer:
-7, -2, 3

Explanation:
-7 is to the left of -2 on the number line. -2 is to the left of 3 on the number line.
So, -7 < -2 < 3

Question 9.
0, 2, 5
Type below:
__________

Answer:
-5, 0, 2

Explanation:
-5 is to the left of 0 on the number line. 0 is to the left of 2 on the number line.
So, -5 < 0 < 2

Question 10.
9, 12, 10
Type below:
__________

Answer:
-12, -10, -9

Explanation:
-12 is to the left of -10 on the number line. -10 is to the left of -9 on the number line.
So, -12 < -10 < -9

Question 11.
2, 3, 4
Type below:
__________

Answer:
-4, -3, -2

Explanation:
-4 is to the left of -3 on the number line. -3 is to the left of -2 on the number line.
So, -4 < -3 < -2

Question 12.
1, 6, 13
Type below:
__________

Answer:
-13, -6, 1

Explanation:
-13 is to the left of -6 on the number line. -6 is to the left of 1 on the number line.
So, -13 < -6 < 1

Question 13.
5, 7, 0
Type below:
__________

Answer:
0, 5, 7

Explanation:
0 is to the left of 5 on the number line. 5 is to the left of 7 on the number line.
So, 0 < 5 < 7

Question 14.
0, 13, 13
Type below:
__________

Answer:
-13, 0, 13

Explanation:
-13 is to the left of 0 on the number line. 0 is to the left of 13 on the number line.
So, -13 < 0 < 13

Question 15.
11, 7, 5
Type below:
__________

Answer:
-11, -5, 7

Explanation:
-11 is to the left of -5 on the number line. -5 is to the left of 7 on the number line.
So, -11 < -5 < 7

Question 16.
9, 8, 1
Type below:
__________

Answer:
-9, -8, 1

Explanation:
-9 is to the left of -8 on the number line. -8 is to the left of 1 on the number line.
So, -9 < -8 < 1

Problem Solving

Question 17.
Meg and Derek played a game. Meg scored 11 points, and Derek scored 4 points. Write a comparison to show that Meg’s score is less than Derek’s score.
Type below:
__________

Answer:
-11 < 4

Explanation:
Meg and Derek played a game. Meg scored -11 points, and Derek scored 4 points.
-11 < 4

Question 18.
Misha is thinking of a negative integer greater than −4. What number could she be thinking of?
Type below:
__________

Answer:
-3, -2, -1

Explanation:
Misha is thinking of a negative integer greater than −4.
-3, -2, -1

Question 19.
Explain how to use a number line to compare two negative integers. Give an example.
Type below:
__________

Answer:
-> On a number line, numbers always increase (become “more positive”) to the right and decrease (become “more negative”) to the left.
-> Numbers to the right are greater than numbers to the left and numbers to the left are less than numbers to the right.
Example: 2 > -10
2 is to the right of -10 on the number line.
So, 2 is greater than -10.

Lesson Check – Page No. 150

Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 7
The chart shows the high temperatures for seven cities on one day in January.

Question 1.
Which city had the lower temperature, Helena or Chicago?
Type below:
__________

Answer:
Helena had a lower temperature

Explanation:
Helena = -1
Chicago = 2
-1 < 2
So, Helena had a lower temperature.

Question 2.
Write the temperatures of the following cities in order from greatest to least: Denver, Helena, Lansing.
Type below:
__________

Answer:
Lansing, Helena, Denver

Explanation:
Denver = -8
Helena = -1
Lansing = 3
3 > -1 > -8
So, Lansing, Helena, and Denver are the answer.

Spiral Review

Question 3.
Fiona starts at the beginning of a hiking trail and walks \(\frac{4}{5}\) mile. She counts the mileage markers that are placed every \(\frac{1}{10}\) mile along the trail. How many markers does she count?
______ markers

Answer:
8 markers

Explanation:
Fiona starts at the beginning of a hiking trail and walks \(\frac{4}{5}\) mile. She counts the mileage markers that are placed every \(\frac{1}{10}\) mile along the trail.
Number of markers = (4/5)/(1/10) = 4/5 × 10 = 8

Question 4.
If Amanda hikes at an average speed of 2.72 miles per hour, how long will it take her to hike 6.8 miles?
______ hours

Answer:
2.5 hours

Explanation:
speed times time = distance
distance = 6.8
speed = 2.72
time = s
2.72 times s = 6.8
Divide both sides by 2.72
s = 2.5
The answer is 2.5 hours

Question 5.
The area of a rectangle is 5 \(\frac{4}{5}\) square meters. The width of the rectangle is 2 \(\frac{1}{4}\) meter. Which is the best estimate for the length of the rectangle?
______ meters

Answer:
2 \(\frac{26}{45}\) meters

Explanation:
Since the area of a rectangle is, A = l × b
A = 5 \(\frac{4}{5}\) square meters
b = 2 \(\frac{1}{4}\) meter
5 \(\frac{4}{5}\) = l × 2 \(\frac{1}{4}\)
l = \(\frac{29 × 4}{9 × 5}\) = \(\frac{116}{45}\) = 2 \(\frac{26}{45}\)

Question 6.
Lillian bought 2.52 pounds of tomatoes and 1.26 pounds of lettuce to make a salad for 18 people. If each person got the same amount of salad, how much salad did each person get?
______ pounds per person

Answer:
0.21 pounds per person

Explanation:
Lillian bought 2.52 pounds of tomatoes and 1.26 pounds of lettuce to make a salad for 18 people.
2.52 pounds + 1.26 pounds = 3.78 pounds of salad ÷ 18 people = 0.21 pounds of salad per person

Share and Show – Page No. 153

Graph the number on the horizontal number line.

Question 1.
2.25
Type below:
__________

Answer:
grade 6 chapter 3 image 6

Explanation:
-2.25 is in between -2 and -3.
-2.25 is between -2 and -2.5

Question 2.
1 \(\frac{5}{8}\)
Type below:
__________

Answer:
grade 6 chapter 3 image 7

Explanation:
-1 \(\frac{5}{8}\) is in between -1 and -2.
-1 \(\frac{5}{8}\) is closer to -2.

Question 3.
\(\frac{1}{2}\)
Type below:
__________

Answer:
grade 6 chapter 3 image 8

Explanation:
\(\frac{1}{2}\) is in between 0 and 1
\(\frac{1}{2}\) = 0.5

On Your Own

Practice: Copy and Solve Graph the number on a vertical number line.

Question 4.
0.6
Type below:
__________

Answer:
grade 6 chapter 3 image 13

Explanation:
0.6 is in between 0 and 1.
0.6 is closer to 1

Question 5.
1.25
Type below:
__________

Answer:
grade 6 chapter 3 image 10

Explanation:
-1.25 is in between -1 and -2
-1.25 is closer to -1.

Question 6.
1 \(\frac{1}{2}\)
Type below:
__________

Answer:
grade 6 chapter 3 image 11

Explanation:
-1 \(\frac{1}{2}\) is in between -1 and -2
-1 \(\frac{1}{2}\) = -1.5

Question 7.
0.3
Type below:
__________

Answer:
grade 6 chapter 3 image 14

Explanation:
0.3 is in between 0 and 1
0.3 is closer to 0

Question 8.
0.7
Type below:
__________

Answer:
grade 6 chapter 3 image 15

Explanation:
-0.7 is in between 0 and -1
-0.7 is closer to -1

Question 9.
1.4
Type below:
__________

Answer:
grade 6 chapter 3 image 16

Explanation:
1.4 is in between 1 and 2
1.4 is closer to 1

Go Math Lesson 3.3 6th Grade Question 10.
0.5
Type below:
__________

Answer:
grade 6 chapter 3 image 17

Explanation:
−0.5 is in between 0 and -1

Question 11.
− \(\frac{1}{4}\)
Type below:
__________

Answer:
grade 6 chapter 3 image 19

Explanation:
− \(\frac{1}{4}\) is in between 0 and -1
-0.25 is closer to 0

State whether the numbers are on the same or opposite sides of zero.

Question 12.
1.38 and 2.9
Type below:
__________

Answer:
Opposite

Explanation:
-1.38 is a negative number.
2.9 is a positive number.
So, both numbers are on opposite sides of zero.

Question 13.
3 \(\frac{9}{10}\) and 0.99
Type below:
__________

Answer:
Same

Explanation:
−3 \(\frac{9}{10}\) is a negative number.
−0.99 is a negative number.
So, both numbers are on the same sides of zero.

Question 14.
\(\frac{5}{6}\) and 4.713
Type below:
__________

Answer:
Opposite

Explanation:
−4.713 is a negative number.
\(\frac{5}{6}\) is a positive number.
So, both numbers are on opposite sides of zero.

Identify a decimal and a fraction in simplest form for the point.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 8

Question 15.
Point A
Type below:
__________

Answer:
-1.0

Explanation:
The point A is located at -1.0 = -1

Question 16.
Point B
Type below:
__________

Answer:
0.75 = 3/4

Explanation:
Point B is between 0.5 and 1. It is 0.75

Question 17.
Point C
Type below:
__________

Answer:
-0.25 = 1/4

Explanation:
Point C is in between 0 and -0.5
-0.25

Question 18.
Point D
Type below:
__________

Answer:
-1.25 = 5/4

Explanation:
Point D is in between -1 and -1.5.
-1.25

Question 19.
The roots of 6 corn plants grew to 3.54 feet, 2 \(\frac{4}{5}\) feet, 3.86 feet, 4 \(\frac{1}{8}\) feet, 4.25 feet, and 2 \(\frac{2}{5}\) feet. How many corn plants had roots between 3 and 4 feet deep?
______ plants

Answer:
2 plants

Explanation:
The roots of 6 corn plants grew to −3.54 feet, −2 \(\frac{4}{5}\) feet, −3.86 feet, −4 \(\frac{1}{8}\) feet, −4.25 feet, and −2 \(\frac{2}{5}\) feet.
−3.54 feet, −3.86 feet,
2 corn plants had roots between 3 and 4 feet deep.

Problem Solving + Applications – Page No. 154

A star’s magnitude is a number that measures the star’s brightness. Use the table of star magnitudes for 20–22.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 9

Question 20.
Between what two integers is the magnitude of Canopus?
Type below:
__________

Answer:
-0.72 is between -0.04 and -1.46

Explanation:
Canopus = -0.72
-0.72 is between -0.04 and -1.46

Question 21.
Model Mathematics
Graph the magnitude of Betelgeuse on the number line.
Type below:
__________

Answer:
grade 6 chapter 3 image 20

Explanation:
Betelgeuse = 0.7

Question 22.
What’s the Error?
Jacob graphed the magnitude of Sirius on the number line. Explain his error. Then graph the magnitude correctly.
Type below:
__________

Answer:
grade 6 chapter 3 image 21

Explanation:
Sirius = -1.46

Question 23.
The flag pole is located at point 0 on a map of Orange Avenue. Other points of interest on Orange Avenue are located on the number line based on their distances, in miles to the right of the flag pole (positive numbers) or to the left of the flag pole (negative numbers). Graph and label each location on the number line.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 10
Type below:
__________

Answer:
grade 6 chapter 3 image 22

Explanation:
0.4 is the right side of the 0.
1.8 is the right side of the 0.
-1 is the left side of the 0.
-1.3 is the left side of the 0.

Rational Numbers and the Number Line – Page No. 155

Graph the number on the number line.

Question 1.
2 \(\frac{3}{4}\)
Type below:
__________

Answer:
grade 6 chapter 3 Page no. 155 image 1

Explanation:
The number is between the integers -3 and -2.
It is closer to the integer -3.

Question 2.
\(\frac{-1}{4}\)
Type below:
__________

Answer:
grade 6 chapter 3 Page no. 155 image 2

Explanation:
The number is between the integers -0.3 and -0.2.
It is closer to the integer -0.25.

Question 3.
0.5
Type below:
__________

Answer:
grade 6 chapter 3 Page no. 155 image 3JPG

Explanation:
The number is between integers 0 and -1.
It is closer to the integer -0.5.

Question 4.
1.75
Type below:
__________

Answer:
grade 6 chapter 3 Page no. 155 image 4

Explanation:
The number is between integers 1 and 2.
It is closer to the integer 1.75.

Question 5.
1 \(\frac{1}{2}\)
Type below:
__________

Answer:
grade 6 chapter 3 Page no. 155 image 5

Explanation:
The number is between integers 1 and 2.
It is closer to the integer 1.5.

State whether the numbers are on the same or opposite sides of zero.

Question 6.
2.4 and 2.3
Type below:
__________

Answer:
Opposite

Explanation:
-2.4 is a negative number.
2.3 is a positive number.
So, both numbers are on opposite sides of zero.

Question 7.
2 \(\frac{1}{5}\) and 1
Type below:
__________

Answer:
Same

Explanation:
−2 \(\frac{1}{5}\) is a negative number.
-1 is a negative number.
So, both numbers are on the same sides of zero.

Question 8.
0.3 and 0.3
Type below:
__________

Answer:
opposite

Explanation:
-0.3 is a negative number.
0.3 is a positive number.
So, both numbers are on opposite sides of zero.

Question 9.
0.44 and \(\frac{2}{3}\)
Type below:
__________

Answer:
Same

Explanation:
0.44 is a positive number.
\(\frac{2}{3}\) is a positive number.
So, both numbers are on the same sides of zero.

Write the opposite of the number.

Question 10.
5.23
Type below:
__________

Answer:
5.23

Explanation:
The opposite number of -5.23 is 5.23

Question 11.
\(\frac{4}{5}\)
Type below:
__________

Answer:
–\(\frac{4}{5}\)

Explanation:
The opposite number of \(\frac{4}{5}\) is –\(\frac{4}{5}\)

Question 12.
−5
Type below:
__________

Answer:
5

Explanation:
The opposite number of -5 is 5

Question 13.
2 \(\frac{2}{3}\)
Type below:
__________

Answer:
2 \(\frac{2}{3}\)

Explanation:
The opposite number of −2 \(\frac{2}{3}\) is 2 \(\frac{2}{3}\)

Problem Solving

Question 14.
The outdoor temperature yesterday reached a low of −4.5° F. Between what two integers was the temperature?
Type below:
__________

Answer:
An integer is a whole number. -4.5 is not a whole number.
-4.5 is in between -4 and the integer below it is -5.

Question 15.
Jacob needs to graph 6 \(\frac{2}{5}\) on a horizontal number line. Should he graph it to the left or right of 6?
Type below:
__________

Answer:
left

Explanation:
It will on the left because it is negative and on a number line the left side is the least side.

Question 16.
Describe how to plot 3 \(\frac{3}{4}\) on a number line.
Type below:
__________

Answer:
On the number line, negative numbers go to the left. Since -3 3/4 is negative, go 3 spaces to the left.
If there are half marks in between the numbers, plot the point near the half mark. If it’s -3 3/4, count 3 spaces, then go to the half mark of -3 to -4, and plot the 3/4 in between the -3 and -4 half mark. If there is no half mark, place it near the -4 mark.
The red line represents the half mark, the blue line represents where the point would go. Notice how when negative, the numbers go higher as they go left.
grade 6 chapter 3 Page no. 155 image 5

Lesson Check – Page No. 156

Question 1.
What number is the opposite of 0.2?
Type below:
__________

Answer:
-0.2

Explanation:
The opposite of 0.2 is -0.2

Question 2.
Between which two integers would you locate −3.4 on a number line?
Type below:
__________

Answer:
-3.4 is located between -3 and -4

Explanation:
Positive 3.4 lies between 3 and 4 on the number line. It is more than 3 but less than 4. 3.4 is further from 0 than just 3. In the same way and because of the symmetrical arrangement of numbers on the number line, -3.4 lies between -3 and -4.

Spiral Review

Question 3.
Yemi used these pattern blocks to solve a division problem. He found a quotient of 7. Which division problem was he solving?
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 11
Type below:
__________

Answer:
7

Explanation:
3 1/2 ÷ 1/2
First, we transform the mixed number into a fraction, 3 1/2 = 7/2
Then, we divide
7/2 ÷ 1/2 = 7
The quotient of the first division is 7.

Question 4.
Eric had 2 liters of water. He gave 0.42 liter to his friend and then drank 0.32 liter. How much water does he have left?
______ liters

Answer:
1.26 liters

Explanation:
Eric had 2 liters of water. He gave 0.42 liter to his friend and then drank 0.32 liter.
2 – 0.42 – 0.32 = 1.26 L

Practice and Homework Lesson 3.3 Answer Key Question 5.
To pass a math test, students must correctly answer at least 0.6 of the questions. Donald’s score is \(\frac{5}{8}\), Karen’s score is 0.88, Gino’s score is \(\frac{3}{5}\) and Sierra’s score is \(\frac{4}{5}\). How many of the students passed the test?
Type below:
__________

Answer:
4

Explanation:
Donald’s score of 5/8 is equal to 0.625.
Gino scored 3/5 which is 0.6.
Sierra’s score of 4/5 equals 0.8.
Karen’s score is already given, and 0.88 is greater than 0.6.
None of the students obtained lower than 0.6.
If at least does not include scores equal to 0.6, and only scores greater than 0.6, then Gino possibly failed this math test.
If a passing score is equal to or greater than 0.6, then all four students passed the test.

Question 6.
Jonna mixes \(\frac{1}{4}\) gallon of orange juice and \(\frac{1}{2}\) gallon of pineapple juice to make punch. Each serving is \(\frac{1}{16}\) gallon. How many servings can Jonna make?
_____ servings

Answer:
12 servings

Explanation:
The number of a gallon of orange juice mixed to make punch is given by 1/4
The number of a gallon of pineapple juice mixed to make punch is given by 1/2
The number of gallons in each serving is given by 1/16
1/4 + 1/2 = 3/4
3/4 ÷ 1/16 = 12
So, there are 12 servings that can be made by Jonna.

Share and Show – Page No. 159

Compare the numbers. Write < or >.

Question 1.
0.3 _____ 0.2

Answer:
-0.3 < 0.2

Explanation:
-0.3 is to the left of 0.2 on the number line.
So, -0.3 is less than 0.2.

Question 2.
\(\frac{1}{3}\) _____ \(\frac{−2}{5}\)

Answer:
\(\frac{1}{3}\) > \(\frac{−2}{5}\)

Explanation:
\(\frac{1}{3}\) is to the right of \(\frac{−2}{5}\) on the number line.
So, \(\frac{1}{3}\) is greater than \(\frac{−2}{5}\).

Question 3.
0.8 _____ 0.5

Answer:
−0.8 < −0.5

Explanation:
-0.8 is to the left of -0.5 on the number line.
So, -0.8 is less than -0.5.

Question 4.
\(\frac{−3}{4}\) _____ −0.7

Answer:
\(\frac{−3}{4}\) < −0.7

Explanation:
\(\frac{−3}{4}\) is to the left of −0.7 on the number line.
So, \(\frac{−3}{4}\) is less than −0.7.

Order the numbers from least to greatest.

Question 5.
3.6, 7.1, 5.9
Type below:
__________

Answer:
-7.1, -5.9, 3.6

Explanation:
-7.1 is to the left of -5.9 on the number line. -5.9 is to the left of 3.6 on the number line.
So, -7.1 < -5.9 < 3.6

Question 6.
\(\frac{-6}{7}, \frac{1}{9}, \frac{-2}{3}\)
Type below:
__________

Answer:
\(\frac{-6}{7}, \frac{-2}{3}, \frac{1}{9}\)

Explanation:
-6/7 = -0.857
1/9 = 0.111
-2/3 = -0.666
-6/7 is to the left of -2/3 on the number line. -2/3 is to the left of 1/9 on the number line.
So, -6/7 < -2/3 < 1/9

Question 7.
5 \(\frac{1}{4}\), 6.5, 5.3
Type below:
__________

Answer:
-6.5, -5.3, −5 \(\frac{1}{4}\)

Explanation:
−5 \(\frac{1}{4}\) = -21/4 = -5.25
-6.5 is to the left of -5.3 on the number line. -5.3 is to the left of -5 \(\frac{1}{4}\) on the number line.
-6.5 < -5.3 < -5.25

On Your Own

Compare the numbers. Write < or >.

Question 8.
\(\frac{−1}{2}\) _____ \(\frac{−3}{7}\)

Answer:
\(\frac{−1}{2}\) < \(\frac{−3}{7}\)

Explanation:
\(\frac{−1}{2}\) = -0.5
\(\frac{−3}{7}\) = -0.428
\(\frac{−1}{2}\) is to the left of \(\frac{−3}{7}\) on the number line.
So, \(\frac{−1}{2}\) is less than \(\frac{−3}{7}\).

Question 9.
23.7 _____ 18.8

Answer:
−23.7 < −18.8

Explanation:
−23.7 is to the left of −18.8 on the number line.
So, −23.7 is less than −18.8.

Question 10.
3 \(\frac{1}{4}\) _____ 4.3

Answer:
−3 \(\frac{1}{4}\) > −4.3

Explanation:
−3 \(\frac{1}{4}\) = -13/4 = -3.25
−3 \(\frac{1}{4}\) is to the right of −4.3 on the number line.
So, −3 \(\frac{1}{4}\) is greater than −4.3.

Order the numbers from greatest to least.

Question 11.
2.4, 1.9, 7.6
Type below:
__________

Answer:
1.9, -2.4, -7.6

Explanation:
1.9 is to the right of -2.4 on the number line. -2.4 is to the right of -7.6 on the number line.
So, 1.9 > -2.4 > -7.6

Question 12.
\(\frac{-2}{5}, \frac{-3}{4}, \frac{-1}{2}\)
Type below:
__________

Answer:
\(\frac{-2}{5}, \frac{-1}{2}, \frac{-3}{4}\)

Explanation:
-2/5 = -0.4; -3/4 = -0.75; -1/2 = -0.5
-2/5 is to the right of -1/2 on the number line. -1/2 is to the right of -3/4 on the number line.
So, -2/5 > -1/2 > -3/4

Question 13.
3, 6 \(\frac{4}{5}\), 3 \(\frac{2}{3}\)
Type below:
__________

Answer:
3, −3 \(\frac{2}{3}\), −6 \(\frac{4}{5}\)

Explanation:
−6 \(\frac{4}{5}\) = -34/5 = -6.8
−3 \(\frac{2}{3}\) = -11/3 = -3.666
3 is to the right of -3 \(\frac{2}{3}\) on the number line. -3 \(\frac{2}{3}\) is to the right of −6 \(\frac{4}{5}\) on the number line.
So, 3 > −3 \(\frac{2}{3}\) > −6 \(\frac{4}{5}\)

Question 14.
Last week, Wednesday’s low temperature was −4.5°F, Thursday’s low temperature was −1.2°F, Friday’s low temperature was −2.7°F, and Saturday’s low temperature was 0.5°F. The average low temperature for the week was −1.5°F. How many of these days had low temperatures less than the average low temperature for the week?
_____ days

Answer:
2 days

Explanation:
Last week, Wednesday’s low temperature was −4.5°F, Thursday’s low temperature was −1.2°F, Friday’s low temperature was −2.7°F, and Saturday’s low temperature was 0.5°F. The average low temperature for the week was −1.5°F.
-4.5 < -1.5; -2.7 < -1.5
2 days had low temperatures less than the average low temperature for the week.

Question 15.
Use Symbols Write a comparison using < or > to show the relationship between an elevation of 12 \(\frac{1}{2}\) ft and an elevation of 16 \(\frac{5}{8}\) ft.
Type below:__________

Answer:
−12 \(\frac{1}{2}\) ft > −16 \(\frac{5}{8}\) ft

Explanation:
−12 \(\frac{1}{2}\) = -25/2 = -12.5
−16 \(\frac{5}{8}\) = -133/8 = -16.625
-12.5 > -16.625

Problem Solving + Applications – Page No. 160

Elevations, in miles, are given for the lowest points below sea level for 4 bodies of water. Use the table for 16–19.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 12

Question 16.
The lowest point of which has the greater elevation, the Arctic Ocean or Lake Tanganyika?
Type below:
__________

Answer:
Arctic Ocean has the greater elevation

Explanation:
Arctic Ocean = -0.8
Lake Tanganyika = -0.9
-0.8 > -0.9
Arctic Ocean has the greater elevation

Question 17.
Which has a lower elevation, the lowest point of Lake Superior or a point at an elevation of \(\frac{2}{5}\) mi?
Type below:
__________

Answer:
Lake Superior has a lower elevation

Explanation:
Lake Superior = -1/4 = -0.25
\(\frac{2}{5}\) = 0.4
-0.25 < 0.4
Lake Superior has a lower elevation

Question 18.
List the elevations in order from least to greatest.
Type below:
__________

Answer:
-0.9, -0.8, -1/3, -1/4

Explanation:
Article Ocean = -0.8
Lake Superior = -1/4 = -0.25
Lake Tanganyika = -0.9
Red Sea = -1/3 = -0.333
-0.9 < -0.8 < -0.333 < -0.25

Go Math 6th Grade Chapter 3 Review Test Question 19.
A shipwreck is found at an elevation of – 0.75 miles. In which bodies of water could the shipwreck have been found?
Type below:
__________

Answer:
Article Ocean

Explanation:
-0.75 is closer to -0.8
Article Ocean = -0.8

Question 20.
Circle <, >, or =.
20a. \(\frac{−3}{5}\) Ο \(\frac{−4}{5}\)
20b. \(\frac{−2}{5}\) Ο \(\frac{−3}{4}\)
20c. 6.5 Ο 4.2
20d. 2.4 Ο 3.7
\(\frac{−3}{5}\) _____ \(\frac{−4}{5}\)
\(\frac{−2}{5}\) _____ \(\frac{−3}{4}\)
6.5 _____ 4.7
2.4 _____ 3.7

Answer:
\(\frac{−3}{5}\) > \(\frac{−4}{5}\)
\(\frac{−2}{5}\) > \(\frac{−3}{4}\)
−6.5 < −4.7
−2.4 > −3.7

Explanation:
-3/5 = -0.6; -4/5 = -0.8
-0.6 > -0.8
-2/5 = -0.4; -3/4 = -0.75
-0.4 > -0.75
-6.5 < -4.7
-2.4 > -3.7

Compare and Order Rational Numbers – Page No. 161

Compare the numbers. Write < or >.

Question 1.
1\(\frac{1}{2}\) _____ \(\frac{−1}{2}\)

Answer:
−1\(\frac{1}{2}\) < \(\frac{−1}{2}\)

Explanation:
−1\(\frac{1}{2}\) = -3/2 = – 1.5
\(\frac{−1}{2}\) = -0.5
-1.5 < -0.5

Question 2.
0.1 _____ 1.9

Answer:
0.1 > −1.9

Explanation:
0.1 is to the right of -1.9 on the number line.
So, 0.1 is greater than -1.9.

Question 3.
0.4 _____ \(\frac{−1}{2}\)

Answer:
0.4 > \(\frac{−1}{2}\)

Explanation:
0.4 is to the right of \(\frac{−1}{2}\) on the number line.
So, 0.4 is greater than \(\frac{−1}{2}\).

Question 4.
\(\frac{2}{5}\) _____ 0.5

Answer:
\(\frac{2}{5}\) < 0.5

Explanation:
2/5 = 0.4
0.4 < 0.5

Order the numbers from least to greatest.

Question 5.
0.2, 1.7, 1
Type below:
__________

Answer:
-1.7, -1, 0.2

Explanation:
-1.7 is to the left of -1 on the number line. -1 is to the left of 0.2 on the number line.
So, -1.7 < -1 < 0.2

Question 6.
\(2 \frac{3}{4}, \frac{-3}{5}, 1 \frac{3}{4}\)
Type below:
__________

Answer:
\( \frac{-3}{5}, 1\frac{3}{4}, 2 \frac{3}{4}\)

Explanation:
2 3/4 = 11/4 = 2.75
-3/5 = – 0.6
1 3/4 = 7/4 = 1.75
-0.6 < 1.75 < 2.75

Question 7.
0.5, 1 \(\frac{2}{3}\), 2.7
Type below:
__________

Answer:
-2.7, −1 \(\frac{2}{3}\), -0.5

Explanation:
−1 \(\frac{2}{3}\) = -5/3 = -1.666
-2.7 < -1.66, -0.5

Order the numbers from greatest to least.

Question 8.
1, \(\frac{−5}{6}\), 0
Type below:
__________

Answer:
0, \(\frac{−5}{6}\), -1

Explanation:
\(\frac{−5}{6}\) = -0.8333
0 is to the right of \(\frac{−5}{6}\) on the number line. \(\frac{−5}{6}\) is to the right of -1 on the number line.
So, 0 > \(\frac{−5}{6}\) > -1

Question 9.
\(1.82, \frac{-2}{5}, \frac{4}{5}\)
Type below:
__________

Answer:
\(1.82, \frac{4}{5}, \frac{-2}{5}\)

Explanation:
-2/5 = -0.4
4/5 = 0.8
1.82
1.82 > 0.8 > -0.4

Question 10.
2.19, 2.5, 1.1
Type below:
__________

Answer:
1.1, -2.19, -2.5

Explanation:
1.1 is to the right of -2.19 on the number line. -2.19 is to the right of -2.5 on the number line.
So, 1.1 > -2.19 > -2.5

Write a comparison using < or > to show the relationship between the two values.

Question 11.
an elevation of −15 m and an elevation of −20.5 m
Type below:
__________

Answer:
-15m > -20.5m

Explanation:
-15 is to the right of -20.5 on the number line.
-15m > -20.5m

Question 12.
a balance of $78 and a balance of −$42
Type below:
__________

Answer:
$42 < $78

Explanation:
$42 is to the left of $78 on the number line.
So, $42 is less than $78.

Question 13.
a score of −31 points and a score of −30 points
Type below:
__________

Answer:
-31 points < -30 points

Explanation:
-31 is to the left of -30 on the number line.
So, -31 is less than -30.

Problem Solving

Question 14.
The temperature in Cold Town on Monday was 1°C. The temperature in Frosty Town on Monday was −2°C. Which town was colder on Monday?
Type below:
__________

Answer:
Frosty Town

Explanation:
The temperature in Cold Town on Monday was 1°C. The temperature in Frosty Town on Monday was −2°C.
Frosty Town Town was colder on Monday.

Question 15.
Stan’s bank account balance is less than −$20.00 but greater than −$21.00. What could Stan’s account balance be?
Type below:
__________

Answer:
From -$20.99 to -$20.01

Explanation:
Stan’s bank account balance is less than −$20.00 but greater than −$21.00. The possible answer is From -$20.99 to -$20.01

Question 16.
Describe two situations in which it would be helpful to compare or order positive and negative rational numbers.
Type below:
__________

Answer:
1) negative numbers in weather reports and on food packaging. The temperature -5°C is ‘negative five degrees’ and it means 5 degrees below zero.
2) When you spend more money than you have in your bank account it shows up as a negative number.

Lesson Check – Page No. 162

Question 1.
The low temperature was —1.8 °C yesterday and −2.1 °C today. Use the symbols < or > to show the relationship between the temperatures.
Type below:
__________

Answer:
The low temperature was —1.8 °C yesterday and −2.1 °C today.
-1.8 > -2.1

Question 2.
The scores at the end of a game are shown. List the scores in order from greatest to least.
Vince: −0.5
Allison: \(\frac{3}{8}\)
Mariah: \(\frac{−7}{20}\)
Type below:
__________

Answer:
\(\frac{3}{8}\), -0.5, \(\frac{−7}{20}\)

Explanation:
\(\frac{3}{8}\) = 0.375
\(\frac{−7}{20}\) = -0.35
-0.5
\(\frac{3}{8}\) > -0.5 > -0.35

Spiral Review

Question 3.
Simone bought 3.42 pounds of green apples and 2.19 pounds of red apples. She used 3 pounds to make a pie. How many pounds of apples are left?
_____ pounds

Answer:
2.61 pounds

Explanation:
She bought 3.42 pounds of green apples, then you can subtract 3 lbs off of that, so she bought .42 lbs of green apples and 2.19 lbs red apples
So now, you just need to add .42 and 2.19
.42 + 2.19 = 2.61, so she has 2.61 lbs of apples left

Question 4.
Kwan bought three rolls of regular wrapping paper with 6.7 square meters of paper each. He also bought a roll of fancy wrapping paper containing 4.18 square meters. How much paper did he have altogether?
_____ square meters

Answer:
24.28 square meters

Explanation:
He bought 3 rolls of regular wrapping paper with 6.7 m². Then the total of this paper is: 3 × 6.7 = 20.1
He also bought a roll of fancy wrapping with 4.18 m². Therefore, to calculate the amount of paper he had together (which you can call ), you must add 20.1 m² and 4.18 m²,
x = 20.1 + 41.8 = 24.28

Question 5.
Eddie needs 223 cups of flour for one batch of pancakes. How much flour does he need for 212 batches?
_____ \(\frac{□}{□}\) cups

Answer:
6\(\frac{4}{6}\) cups

Explanation:
For 1 batch of pancake = 2 2/3 = 8/3 cups
For 2 1/2 = 5/2 pancake = 8/3 × 5/2 = 40/6 cups = 6 4/6 cups

Question 6.
Tommy notices that he reads \(\frac{2}{3}\) page in a minute. At that rate, how long will it take him to read 12 pages?
_____ minutes

Answer:
18 minutes

Explanation:
It will take him 18 minutes.
2/3 of a page in 18 minutes= 12 pages read

Mid-Chapter Checkpoint – Vocabulary – Page No. 163

Choose the best term from the box to complete the sentence.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 13

Question 1.
Any number that can be written as \(\frac{a}{b}\), where a and b are integers and b≠0 is called a(n) _____.
Type below:
__________

Answer:
rational number

Question 2.
The set of whole numbers and their opposites is the set of _____.
Type below:
__________

Answer:
Integers

Concepts and Skills

Write the opposite of the integer.

Question 3.
72
Type below:
__________

Answer:
72

Explanation:
The integer −72 is on the left side of 0.
So, the opposite of -72 is 72

Question 4.
0
Type below:
__________

Answer:
0

Explanation:

Opposite of 0 is 0

Question 5.
31
Type below:
__________

Answer:
31

Explanation:
The integer −31 is on the left side of 0.
So, the opposite of -31 is 31

Question 6.
27
Type below:
__________

Answer:

Explanation:
The integer 27 is on the right side of 0.
So, the opposite of 27 is -27

Name the integer that represents the situation, and tell what 0 represents in that situation.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 14

Question 7.
Type below:
__________

Answer:
Integer: 278
0 represents: Neither losses nor gains in the video game.

Question 8.
Type below:
__________

Answer:
Integer: -8 degrees
0 represents: No change in the temperature.

Compare the numbers. Write < or >.

Question 9.
3 _____ 4

Answer:
3 > −4

Explanation:
3 is to the right of -4 on the number line.
So, 3 is greater than -4.

Question 10.
6 _____ 5

Answer:
−6 < −5

Explanation:
-6 is to the left of -5 on the number line.
So, -6 is less than -5.

Question 11.
5 _____ 6

Answer:
5 > −6

Explanation:
5 is to the right of -6 on the number line.
So, 5 is greater than -6.

Practice and Homework Lesson 3.5 Question 12.
\(\frac{1}{3}\) _____ \(\frac{1}{2}\)

Answer:
\(\frac{1}{3}\) < \(\frac{1}{2}\)

Explanation:
\(\frac{1}{3}\) is to the left of \(\frac{1}{2}\) on the number line.
So, \(\frac{1}{3}\) is less than \(\frac{1}{2}\).

Question 13.
3.1 _____ 4.3

Answer:
−3.1 >−4.3

Explanation:
-3.1 is to the right of -4.3 on the number line.
So, -3.1 is greater than -4.3.

Question 14.
1\(\frac{3}{4}\) _____ 2\(\frac{1}{2}\)

Answer:
1\(\frac{3}{4}\) >−2\(\frac{1}{2}\)

Explanation:
1\(\frac{3}{4}\) is to the right of −2\(\frac{1}{2}\) on the number line.
So, 1\(\frac{3}{4}\) is greater than −2\(\frac{1}{2}\).

Order the numbers.

Question 15.
5, 2, 8
Type below:
__________

Answer:
-8, -2, 5

Explanation:
-8 is to the left of -2 on the number line. -2 is to the left of 5 on the number line.
So, -8 < -2 < 5

Question 16.
0, 3, 1
Type below:
__________

Answer:
-3, 0, 1

Explanation:
-3 is to the left of 0 on the number line. 0 is to the left of 1 on the number line.
So, -3 < 0 < 1

Question 17.
7, 6, 11
Type below:
__________

Answer:
-11, -7, -6

Explanation:
-11 is to the left of -7 on the number line. -7 is to the left of -6 on the number line.
So, -11 < -7 < -6

Question 18.
2.5, 1.7, 4.3
Type below:
__________

Answer:
-4.3, -1.7, 2.5

Explanation:
-4.3 is to the left of -1.7 on the number line. -1.7 is to the left of 2.5 on the number line.
So, -4.3 < -1.7 < 2.5

Question 19.
\(\frac{2}{3} \cdot \frac{1}{4}, \frac{5}{12}\)
Type below:
__________

Answer:
\(\frac{1}{4} \cdot \frac{5}{12}, \frac{2}{3}\)

Explanation:
2/3 = 0.666
1/4 = 0.25
5/12 = 0.4166
1/4 < 5/12 < 2/3

Question 20.
5.2, 3.8, 9.4
Type below:
__________

Answer:
−9.4, −5.2, −3.8

Explanation:
-9.4 is to the left of -5.2 on the number line. -5.2 is to the left of -3.8 on the number line.
So, -9.4 < -5.2 < -3.8

Page No. 164

Question 21.
Judy is scuba diving at −7 meters, Nelda is scuba diving at −9 meters, and Rod is scuba diving at −3 meters. List the divers in order from the deepest diver to the diver who is closest to the surface.
Type below:
__________

Answer:
Judy is scuba diving at −7 meters, Nelda is scuba diving at −9 meters, and Rod is scuba diving at −3 meters.
the higher the value of the negative number, the deeper the diver is.
Nelda (-9)- Judy (-7) -Rod (-3)

Question 22.
A football team gains 8 yards on their first play. They lose 12 yards on the next play. What two integers represent the two plays?
Type below:
__________

Answer:
A football team gains 8 yards on their first play. +8
They lose 12 yards on the next play. -12
The 2 integers are positive 8 and negative 12

Question 23.
The player who scores the closest to 0 points wins the game. The scores of four players are given in the table. Who won the game?
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 15
Type below:
__________

Answer:
Donovan won the game

Explanation:
Donovan because he has-1.5
Myra has -1.93
Amari has -1.66666666
Justine has -1.8
-1.5 is the closest to 0

Question 24.
Which point on the graph represents 3 \(\frac{3}{4}\) ? What number does point C represent?
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 16
Type below:
__________

Answer:
A

Explanation:
−3 \(\frac{3}{4}\) = -15/4 = -3.75
-3.75 is in between -3 and -4.
So, point A is the correct answer

Share and Show – Page No. 167

Find the absolute value.

Question 1.
|2|
Type below:
__________

Answer:
2

Explanation:
The distance from 0 to the point I graphed is 2 units.
|−2| = 2

Question 2.
|6|
Type below:
__________

Answer:
6

Explanation:
The distance from 0 to the point I graphed is 6 units.
|6| = 6

Question 3.
|5|
Type below:
__________

Answer:
5

Explanation:
The distance from 0 to the point I graphed is 6 units.
|-5| = 5

Question 4.
|11|
Type below:
__________

Answer:
11

Explanation:
The distance from 0 to the point I graphed is 6 units.
|-11| = 11

Question 5.
|9|
Type below:
__________

Answer:
9

Explanation:
The distance from 0 to the point I graphed is 6 units.
|9| = 9

Question 6.
|15|
Type below:
__________

Answer:
15

Explanation:
The distance from 0 to the point I graphed is 6 units.
|-15| = 15

On Your Own

Find the absolute value.

Question 7.
|37|
Type below:
__________

Answer:
37

Explanation:
The distance from 0 to the point I graphed is 6 units.
|-37| = 37

Question 8.
|1.8|
Type below:
__________

Answer:
1.8

Explanation:
The distance from 0 to the point I graphed is 6 units.
|1.8| = 1.8

Question 9.
|\(\frac{−2}{3}\)|
Type below:
__________

Answer:
|\(\frac{2}{3}\)|

Explanation:
The distance from 0 to the point I graphed is 6 units.
||\(\frac{−2}{3}\)|| = |\(\frac{2}{3}\)|

Question 10.
|6.39|
Type below:
__________

Answer:
6.39

Explanation:
The distance from 0 to the point I graphed is 6 units.
|-6.39| = 6.39

Question 11.
|5\(\frac{7}{8}\)|
Type below:
__________

Answer:
5\(\frac{7}{8}\)

Explanation:
The distance from 0 to the point I graphed is 5\(\frac{7}{8}\) units.
|−5\(\frac{7}{8}\)| = 5\(\frac{7}{8}\)

Find all numbers with the given absolute value.

Question 12.
13
Type below:
__________

Answer:
13 and -13

Explanation:
13 and -13 are at the same distance from 0.

Question 13.
\(\frac{5}{6}\)
Type below:
__________

Answer:
\(\frac{5}{6}\) and \(\frac{-5}{6}\)

Explanation:
\(\frac{5}{6}\) and \(\frac{-5}{6}\) are at the same distance from 0.

Question 14.
14.03
Type below:
__________

Answer:
14.03 and -14.03

Explanation:
14.03 and -14.03 are at the same distance from 0.

Question 15.
0.59
Type below:
__________

Answer:
0.59 and -0.59

Explanation:
0.59 and -0.59 are at the same distance from 0.

Question 16.
3\(\frac{1}{7}\)
Type below:
__________

Answer:
3\(\frac{1}{7}\) and -3\(\frac{1}{7}\)

Explanation:
3\(\frac{1}{7}\) and -3\(\frac{1}{7}\) are at the same distance from 0.

Use Reasoning Algebra Find the missing number or numbers to make the statement true.

Question 17.
|?| = 10
Type below:
__________

Answer:
10 and -10

Explanation:
|-10| = 10
|10| = 10

Question 18.
|?| = 1.78
Type below:
__________

Answer:
1.78 and -1.78

Explanation:
|-1.78| = 1.78
|1.78| = 1.78

Question 19.
|?| = 0
Type below:
__________

Answer:
0

Explanation:
|0| = 0

Question 20.
|?| = \(\frac{15}{16}\)
Type below:
__________

Answer:
\(\frac{-15}{16}\) and \(\frac{15}{16}\)

Explanation:
|\(\frac{-15}{16}\)| = \(\frac{15}{16}\)
|\(\frac{15}{16}\)| = \(\frac{15}{16}\)

Question 21.
Find all of the integers whose absolute value is less than |–4|.
Type below:
__________

Answer:
3, 2, 1, 0

Explanation:
The absolute value of |–4| = 4.
3, 2, 1, 0 are the integers whose absolute value is less than |–4|.

Unlock The Problem – Page No. 168

Question 22.
The Blue Ridge Trail starts at Park Headquarters in Big Bear Park and goes up the mountain. The Green Creek Trail starts at Park Headquarters and goes down the mountain. The table gives elevations of various points of interest in relation to Park Headquarters. How many points of interest are less than 1 kilometer above or below Park Headquarters?
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 17
a. How can you find how far above or below Park Headquarters a given point of interest is located?
Type below:
__________

Answer:
By knowing the values below 1 km can help you to find how far above or below Park Headquarters a given point of interest is located

Question 22.
b. How can you find the number of points of interest that are less than 1 km above or below Park Headquarters?
Type below:
__________

Answer:
By counting the number of points of interest that are less than 1 km, you can find the number of points of interest that are less than 1 km above or below Park Headquarters.

Question 22.
c. Find how far above or below Park Headquarters each point of interest is located.
Type below:
__________

Answer:
C, D, E, F, G, H

Question 22.
d. How many points of interest are less than 1 kilometer above or below Park Headquarters?
Type below:
__________

Answer:
6

Question 23.
Use Reasoning Name a rational number that can replace? to make both statements true.
?>3             |?|<|3|
Type below:
__________

Answer:
-2 or -1 >−3          1 or 2 < |−3|

Explanation:
The greatest numbers than -3 are -2 or -1.
|−3| = 3. So, the fewer numbers than 3 are 1, 2

Question 24.
Laila said |4| equals |−4|. Is Laila correct? Use the number line and words to support your answer.
Type below:
__________

Answer:
Laila is correct. The absolute value of |−4| = 4 = |4|

Absolute Value – Page No. 169

Find the absolute value.

Question 1.
|7|
Type below:
__________

Answer:
7

Explanation:

The distance from 0 to the point I graphed is 2 units.
|7| = 7

Question 2.
|8|
Type below:
__________

Answer:
8

Explanation:
The distance from 0 to the point I graphed is 2 units.
|−8| = 8

Question 3.
|16|
Type below:
__________

Answer:
16

Explanation:
The distance from 0 to the point I graphed is 2 units.
|16| = 16

Question 4.
|8.65|
Type below:
__________

Answer:
8.65

Explanation:
The distance from 0 to the point I graphed is 2 units.
|8.65| = 8.65

Question 5.
|4\(\frac{3}{20}\)|
Type below:
__________

Answer:
4\(\frac{3}{20}\)

Explanation:
The distance from 0 to the point I graphed is 2 units.
|4\(\frac{3}{20}\)| = 4\(\frac{3}{20}\)

Question 6.
|5000|
Type below:
__________

Answer:
5000

Explanation:
The distance from 0 to the point I graphed is 2 units.
|−5000| = 5000

Find all numbers with the given absolute value.

Question 7.
12
Type below:
__________

Answer:
12 and -12

Explanation:
12 and -12 are at the same distance from 0.

Question 8.
1.7
Type below:
__________

Answer:
1.7 and -1.7

Explanation:
1.7 and -1.7 are at the same distance from 0.

Practice and Homework Lesson 3.6 Answer Key Question 9.
\(\frac{3}{5}\)
Type below:
__________

Answer:
\(\frac{3}{5}\) and \(\frac{-3}{5}\)

Explanation:
\(\frac{3}{5}\) and \(\frac{-3}{5}\) are at the same distance from 0.

Question 10.
3\(\frac{1}{6}\)
Type below:
__________

Answer:
3\(\frac{1}{6}\) and -3\(\frac{1}{6}\)

Explanation:
3\(\frac{1}{6}\) and -3\(\frac{1}{6}\) are at the same distance from 0.

Question 11.
0
Type below:
__________

Answer:
0

Explanation:
0 is the same distance from 0.

Find the number or numbers that make the statement true.

Question 12.
|?| = 17
Type below:
__________

Answer:
17 and -17

Explanation:
|-17| = 17
|17| = 17

Question 13.
|?| = 2.04
Type below:
__________

Answer:
2.04 and -2.04

Explanation:
|-2.04| = 2.04
|2.04| = 2.04

Question 14.
|?| = 1\(\frac{9}{10}\)
Type below:
__________

Answer:
1\(\frac{9}{10}\) and -1\(\frac{9}{10}\)

Explanation:
|-1\(\frac{9}{10}\)| = 1\(\frac{9}{10}\)
|1\(\frac{9}{10}\)| = 1\(\frac{9}{10}\)

Question 15.
|?| = \(\frac{19}{24}\)
Type below:
__________

Answer:
\(\frac{19}{24}\) and \(\frac{-19}{24}\)

Explanation:
|\(\frac{-19}{24}\)| = \(\frac{19}{24}\)
|\(\frac{19}{24}\)| = \(\frac{19}{24}\)

Problem Solving

Question 16.
Which two numbers are 7.5 units away from 0 on a number line?
Type below:
__________

Answer:
7.5 and -7.5 are away from 0 on a number line

Explanation:
|7.5| = 7.5
|-7.5| = 7.5

Question 17.
Emilio is playing a game. He just answered a question incorrectly, so his score will change by −10 points. Find the absolute value of −10.
Type below:
__________

Answer:
10

Explanation:
Emilio is playing a game. He just answered a question incorrectly, so his score will change by −10 points.
|-10| = 10

Question 18.
Write two different real-world examples. One should involve the absolute value of a positive number, and the other should involve the absolute value of a negative number.
Type below:
__________

Answer:
1) If we have a balance of -$35 dollars in an account, we may also choose to represent that as a debt of $35.
2) The temperature of the human body

Lesson Check – Page No. 170

Question 1.
What is the absolute value of \(\frac{8}{9}\)?
Type below:
__________

Answer:
\(\frac{8}{9}\)

Explanation:
|\(\frac{8}{9}\)| = \(\frac{8}{9}\)

Question 2.
What two numbers have an absolute value of 21.63?
Type below:
__________

Answer:
21.63 and -21.63

Explanation:
|-21.63| = 21.63
|21.63| = 21.63

Spiral Review

Question 3.
Rachel earned $89.70 on Tuesday. She spent $55.89 at the grocery store. How much money does she have left?
$ ______

Answer:
$33.81

Explanation:
Rachel earned $89.70 on Tuesday. She spent $55.89 at the grocery store.
89.70 – 55.89 = 33.81
Rachel has $33.81 left

Question 4.
One carton contains \(\frac{17}{20}\) liter of juice. Another carton contains 0.87 liter of juice. Which carton contains the most?
Type below:
__________

Answer:
0.87 is more because 17/20 is 0.85

Explanation:
One carton contains \(\frac{17}{20}\) liter of juice. Another carton contains 0.87 liters of juice.
0.87 is more because 17/20 is 0.85

Question 5.
Maggie jogged \(\frac{7}{8}\) mile on Monday and \(\frac{1}{2}\) of that distance on Tuesday. How far did she jog on Tuesday?
\(\frac{□}{□}\) mile

Answer:
\(\frac{7}{4}\) mile

Explanation:
Maggie jogged \(\frac{7}{8}\) mile on Monday and \(\frac{1}{2}\) of that distance on Tuesday.
\(\frac{7}{8}\) ÷ \(\frac{1}{2}\) = 7/4
7/4 or as a mixed fraction which is 1 3/4 mile

Question 6.
Trygg has \(\frac{3}{4}\) package of marigold seeds. He plants \(\frac{1}{6}\) of those seeds in his garden and divides the rest equally into 10 flowerpots. What fraction of a package of seeds is planted in each flowerpot?
\(\frac{□}{□}\) package

Answer:
\(\frac{1}{16}\) package

Explanation:
He has a 3/4 package and plants 1/6 of the seeds.
3/4 × 1/6 = 1/8
He divides the rest equally into 10 flowerpots.
Subtract 1/8 from 3/4.
The common denominator of 4 and 8 is 8.
Multiply the numerator 3 × 2= 6 with a denominator of 8.
3/4 – 1/8 = 6/8 -1/8 = 5/8
5/8 is left to be divided equally into 10 flowerpots.
5/8 ÷ 10/1
= 5/8 * 1/10
= 5/80
= 1/16

Share and Show – Page No. 173

Question 1.
On Monday, Allie’s bank account balance was – $24. On Tuesday, her account balance was less than it was on Monday. Use absolute value to describe Allie’s balance on Tuesday as a debt.
Type below:
__________

Answer:
On Tuesday, her account balance is less than -$24 means her debt will be bigger than $24 dollars.

Explanation:
On Monday, allies’ bank account balance was -$24.
Balance being negative means he is carrying a debt of $24.
On Tuesday, Allie’s balance account was less than it was on Monday. It means
Her bank account < -$24
So, she must be carrying a debit bigger than $24.
Therefore, on Tuesday, her account balance being less than -$24 means her debt will be greater than $24 dollars.

Question 2.
Matthew scored −36 points in his turn at a video game. In Genevieve’s turn, she scored fewer points than Matthew. Use absolute value to describe Genevieve’s score as a loss.
Type below:
__________

Answer:
Genevieve lost more than 36 points

Explanation:
Matthew scored −36 points in his turn at a video game. In Genevieve’s turn, she scored fewer points than Matthew.
-36 > -40
|-36| < |-40|
36 < 40
Genevieve lost more than 36 points

On Your Own

Question 3.
One of the cats shown in the table is a tabby. The tabby had a decrease in weight of more than 3.3 ounces. Which cat is the tabby?
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 18
Type below:
__________

Answer:
Spot is tabby

Explanation:
|-3.4| = 3.4
So, Spot is tabby

Compare. Write <, >, or =.

Question 4.
−8 _____ |8|

Answer:
−8 < |−8|

Explanation:
|−8| = 8
-8 < 8

Question 5.
13 _____ |13|

Answer:
13 = |−13|

Explanation:
|−13| = 13
13 = 13

Question 6.
|23| _____ |24|

Answer:
|−23| < |−24|

Explanation:
|−23| = 23
|−24| = 24
23 < 24

Question 7.
15 _____ |14|

Answer:
15 > |−14|

Explanation:
|−14| = 14
15 > 14

Question 8.
34 _____ |36|

Answer:
34 < |−36|

Explanation:
|−36| = 36
34 < 36

Question 9.
−5 _____ |6|

Answer:
−5 < |−6|

Explanation:
|−6| = 6
-5 < 6

Question 10.
Write the values in order from least to greatest.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 19
Type below:
__________

Answer:
1, 2, 3, 6

Explanation:
|-2| = 2
|3| = 3
|-6| = 6
|1| = 1
1 < 2 < 3 < 6

Compare and Contrast – Page No. 174

When you compare and contrast, you look for ways that two or more subjects are alike (compare) and ways they are different (contrast). This helps you to discover information about each subject that you might not have known otherwise. As you read the following passage, think about how the main topics are alike and how they are different.

Trevor mows lawns after school to raise money for a new mountain bike. Last week, it rained every day, and he couldn’t work. While waiting for better weather, he spent some of his savings on lawnmower repairs. As a result, his savings balance changed by −$45. This week, the weather was better, and Trevor returned to work. His savings balance changed by +$45 this week.

Question 11.
The passage has two main parts. Describe them.
Type below:
__________

Answer:
Last week, Trevor couldn’t work, so he spent money to repair the lawnmower!
This week, he goes back to work and earns money again!

Question 12.
Describe the two changes in Trevor’s savings balance
Type below:
__________

Answer:
His savings balance changed by −$45 in one week and his savings balance changed by +$45 in another week.

Question 13.
Reason Quantitatively Compare the two changes in Trevor’s savings balance. How are they alike?
Type below:
__________

Answer:
Each week, Trevor’s balance changed by $45; or his balance is the same distance from 0 each week.

Question 14.
Contrast the two changes in Trevor’s savings balance. How are they different?
Type below:
__________

Answer:
The balances are different because one week the balance had a decrease, while the next week there was an increase in the balance

Compare Absolute Values – Page No. 175

Solve.

Question 1.
Jamie scored −5 points on her turn at a trivia game. In Veronica’s turn, she scored more points than Jamie. Use absolute value to describe Veronica’s score as a loss.
Type below:
__________
Jamie scored −5 points on her turn at a trivia game. In Veronica’s turn, she scored more points than Jamie.

Answer:
In this situation, |-5| represents a loss of 5 points. Veronica lost fewer than 5 points.

Question 2.
The low temperature on Friday was −10°F. The low temperature on Saturday was colder. Use absolute value to describe the temperature on Saturday as a temperature below zero.
Type below:
__________

Answer:
The temperature on Sunday was more than 10 degrees below zero

Explanation:
The low temperature on Friday was −10°F. The low temperature on Saturday was colder. The temperature on Sunday was more than 10 degrees below zero

Question 3.
The table shows changes in the savings accounts of five students. Which student had the greatest increase in money? By how much did the student’s account increase?
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 20
Type below:
__________

Answer:
Carissa; an increase of $15

Compare. Write <, >, or =.

Question 4.
16 _____ |16|

Answer:
−16 < |−16|

Explanation:
|−16| = 16
-16 < 16

Question 5.
20 _____ 20

Answer:
20 = 20

Question 6.
3 _____ |4|

Answer:
3 < |−4|

Explanation:
|−4| = 4
3 < 4

Problem Solving

Question 7.
On Wednesday, Miguel’s bank account balance was −$55. On Thursday, his balance was less than that. Use absolute value to describe Miguel’s balance on Thursday as a debt.
Type below:
__________

Answer:
In this situation, -$55 represents a debt of $55. On Thursday, Miguel had a debt of more than $55.

Explanation:
On Wednesday, Miguel’s bank account balance was −$55. On Thursday, his balance was less than that.
In this situation, -$55 represents a debt of $55. On Thursday, Miguel had a debt of more than $55.

Question 8.
During a game, Naomi lost points. She lost fewer than 3 points. Use an integer to describe her possible score.
Type below:
__________

Answer:
-2, -1

Explanation:
During a game, Naomi lost points. She lost fewer than 3 points.
It may be -2, -1

Question 9.
Give two numbers that fit this description: a number is less than another number but has a greater absolute value. Describe how you determined the numbers.
Type below:
__________

Answer:
Choose a large negative number and a smaller positive number.
Example: Use -14 and 3, -8392 and 274, -1 and 0.5, etc. Even though the negative numbers are technically less, they would have higher absolute values.

Lesson Check – Page No. 176

Question 1.
A temperature of –6° is colder than a temperature of 5°F below zero. Is this statement true or false?
Type below:
__________

Answer:
True

Explanation:
–6° is colder than a temperature of 5°F below zero

Question 2.
Long Beach, California has an elevation of −7 feet. New Orleans, Louisiana is 8 feet below sea level. Which city has a lower elevation?
Type below:
__________

Answer:
New Orleans, Louisiana has a lower elevation

Explanation:
Long Beach, California has an elevation of −7 feet.
New Orleans, Louisiana is 8 feet below sea level. = -8 feet
So, New Orleans, Louisiana has a lower elevation.

Spiral Review

Question 3.
Dawn and Lin took off on skateboards from the same location but traveled in opposite directions. After 20 minutes, Dawn had traveled 6.42 kilometers and Lin had traveled 7.7 kilometers. How far apart were they?
_____ kilometers

Answer:
14.12 kilometers

Explanation:
Distance of Dawn = 6.42 km
Distance from Lin = 7.7 km in the opposite direction.
If they went in opposite directions then they were moving away from each other.
The final distance between the two, d = 6.42 + 7.7 = 14.12 km
After 20 minutes Dawn and Lin were 14.12 km away.

Question 4.
Rico and Josh took off on skateboards going in the same direction. After 20 minutes, Rico had traveled 5.98 kilometers and Josh had gone 8.2 kilometers. How far apart were they?
_____ kilometers

Answer:
2.22 kilometers

Explanation:
Rico and Josh took off on skateboards going in the same direction.
After 20 minutes, Rico had traveled 5.98 kilometers and Josh had gone 8.2 kilometers.
D = 8.2 – 5.98 = 2.22 km
Hence, Rico and Josh were 2.22 km apart from each other.

Question 5.
Etta bought 11.5 yards of fabric selling for $0.90 per yard. What was the total cost?
$ _____

Answer:
$10.35

Explanation:
Multiply 11.5 times 0.90 and get $10.35

Question 6.
Yen calculates the product \(\frac{5}{8} \times \frac{24}{25}\). Before he multiplies, he simplifies all factors. What does the problem look like after he simplifies the factors?
Type below:
__________

Answer:
Yen calculates the product \(\frac{5}{8} \times \frac{24}{25}\).
5/8 = 0.625
24/25 = 0.96
0.625 × 0.96 = 0.6

Share and Show – Page No. 179

Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 21

Question 1.
Write the ordered pair for point J.
Type below:
__________

Answer:
(-1.5, 2.5)

Explanation:
To find the x-coordinate, move 1.5 units to the left.
To find the y-coordinate, move 2.5 units up.
Point J is located at (-1.5, 2.5)

Write the ordered pair for the point.

Question 2.
K
Type below:
__________

Answer:
(1, -1.5)

Explanation:
To find the x-coordinate, move 1 unit to the right.
To find the y-coordinate, move 1.5 units down.
Point K is located at (1, -1.5)

Question 3.
L
Type below:
__________

Answer:
(-2, -1.75)

Explanation:
To find the x-coordinate, move 2 units to the left.
To find y-coordinate, move 1.75 units down.
Point L is located at (-2, -1.75)

Question 4.
M
Type below:
__________

Answer:
(1, 0)

Explanation:
To find the x-coordinate, move 1 unit to the right.
To find y-coordinate, move 0 units.
Point M is located at (1, 0)

Graph and label the point on the coordinate plane.

Question 5.
P(-2.5, 2)
Type below:
__________

Answer:
The x-coordinate is negative. Move 2.5 units to the left.
y-coordinate is positive. Move 2 units up

Question 6.
Q(-2, \(\frac{1}{4}\))
Type below:
__________

Answer:
The x-coordinate is negative. Move 2 units to the left.
y-coordinate is positive. Move 0.25 units up

Question 7.
R(0, 1.5)
Type below:
__________

Answer:
The x-coordinate is positive. Move 0 units.
y-coordinate is positive. Move 1.5 units up

Question 8.
S(-1, \(\frac{-1}{2}\))
Type below:
__________

Answer:
The x-coordinate is negative. Move 1 unit to the left.
y-coordinate is negative. Move 0.5 units down

Question 9.
T( 1\(\frac{1}{2}\), -2 )
Type below:
__________

Answer:
The x-coordinate is positive. Move 1.5 units to the right.
y-coordinate is negative. Move 2 units down

Rational Numbers and the Coordinate Plane Lesson 3.7 Question 10.
U(0.75, 1.25)
Type below:
__________

Answer:
The x-coordinate is positive. Move 0.75 units to the right.
y-coordinate is positive. Move 1.25 units up

Question 11.
V(-0.5, 0)
Type below:
__________

Answer:
The x-coordinate is negative. Move 0.5 units to the left.
y-coordinate is positive. Move 0 units

Question 12.
W(2, 0)
Type below:
__________

Answer:
The x-coordinate is positive. Move 2 units to the right.
y-coordinate is positive. Move 0 units up

Question 13.
X(0, -2)
Type below:
__________

Answer:
The x-coordinate is positive. Move 0 units.
y-coordinate is negative. Move 2 units down

grade 6 chapter 3 Page no. 175 image 1

On Your Own

Write the ordered pair for the point. Give approximate coordinates when necessary.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 22

Question 14.
A
Type below:
__________

Answer:
(4, 4)

Explanation:
To find the x-coordinate, move 4 units to the right.
To find y-coordinate, move 4 units up.
Point A is located at (4, 4)

Question 15.
B
Type below:
__________

Answer:
(-4, 3)

Explanation:
To find the x-coordinate, move 4 units to the left.
To find y-coordinate, move 3 units up.
Point B is located at (-4, 3)

Question 16.
C
Type below:
__________

Answer:
(-3, 1)

Explanation:
To find the x-coordinate, move 3 units to the left.
To find y-coordinate, move 1 unit up.
Point C is located at (-3, 1)

Question 17.
D
Type below:
__________

Answer:
(-2, -3)

Explanation:
To find the x-coordinate, move 2 units to the left.
To find y-coordinate, move 3 units down.
Point D is located at (-2, -3)

Question 18.
E
Type below:
__________

Answer:
(5, -3)

Explanation:
To find the x-coordinate, move 5 units to the right.
To find y-coordinate, move 3 units down.
Point E is located at (5, -3)

Question 19.
F
Type below:
__________

Answer:
(2.5, 0)

Explanation:
To find the x-coordinate, move 2.5 units to the right.
To find y-coordinate, move 0 units.
Point F is located at (2.5, 0)

Question 20.
G
Type below:
__________

Answer:
(-4, -5)

Explanation:
To find the x-coordinate, move 4 units to the left.
To find y-coordinate, move 5 units down.
Point G is located at (-4, -5)

Question 21.
H
Type below:
__________

Answer:
(0, 3.5)

Explanation:
To find the x-coordinate, move 0 units.
To find y-coordinate, move 3.5 units up.
Point H is located at (0, 3.5)

Question 22.
J
Type below:
__________

Answer:
(0.5, 0.5)

Explanation:
To find the x-coordinate, move 0.5 units to the right.
To find y-coordinate, move 0.5 units up.
Point J is located at (0.5, 0.5)

Graph and label the point on the coordinate plane.

Question 23.
M(-4, 0)
Type below:
__________

Answer:
The x-coordinate is negative. Move 4 units to the left.
y-coordinate is positive. Move 0 units

Question 24.
N(2, 2)
Type below:
__________

Answer:
The x-coordinate is positive. Move 2 units to the right.
y-coordinate is positive. Move 2 units up

Question 25.
P(-3, 3)
Type below:
__________

Answer:
The x-coordinate is positive. Move 3 units to the left.
y-coordinate is positive. Move 3 units up

Question 26.
Q(0, −2\(\frac{1}{2}\))
Type below:
__________

Answer:
The x-coordinate is positive. Move 0 units.
y-coordinate is negative. Move 2.5 units down

Explanation:

Question 27.
R(0.5, 0.5)
Type below:
__________

Answer:
The x-coordinate is positive. Move 0.5 units to the right.
y-coordinate is positive. Move 0.5 units up

Question 28.
S(-5, \(\frac{1}{2}\))
Type below:
__________

Answer:
The x-coordinate is negative. Move 5 units to the left.
y-coordinate is positive. Move 0.5 units up

Question 29.
T(0, 0)
Type below:
__________

Answer:
It is at the origin. T is at the origin

Question 30.
U(3 \(\frac{1}{2}\), 0)
Type below:
__________

Answer:
The x-coordinate is positive. Move 3.5 units to the right.
y-coordinate is positive. Move 0 units

Question 31.
V(-2, -4)
Type below:
__________

Answer:
The x-coordinate is negative. Move 2 units to the left.
y-coordinate is negative. Move 4 units down

grade 6 chapter 3 Page no. 175 image 2

Question 32.
Look for Structure A point lies to the left of the y-axis and below the x-axis. What can you conclude about the coordinates of the point?
Type below:
__________

Answer:
A point lies to the left of the y-axis. So, the x-coordinate is negative.
A point lies below the x-axis. So, y-coordinate is negative.
Both coordinates points are negative

Problem Solving + Applications – Page No. 180

Many of the streets in downtown Philadelphia can be modeled by a coordinate plane, as shown on the map. Each unit on the map represents one block. Use the map for 33 and 34.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 23

Question 33.
Anita works at the Historical Society. She leaves the building and walks 3 blocks north to a restaurant. What ordered pair represents the restaurant?
Type below:
__________

Answer:
Anita works at the Historical Society. She leaves the building and walks 3 blocks north to a restaurant.
Historical Society = (2, 4)
As she walks 3 blocks north to a restaurant 4-3 = 1
(2, 1) ordered pair represents the restaurant

Question 34.
Pose a Problem Write and solve a new problem that uses a location on the map.
Type below:
__________

Answer:
Anita is at City Hall. She walked 3 blocks to the East and 2 blocks to the North. What ordered pair represents her present location?
She is at the Fabric Workshop & Museum. The ordered pair is (3, 2)

Question 35.
The points A, B, C, and D on a coordinate plane can be connected to form a rectangle. Point A is located at (2, 0), point B is located at (6, 0), and point C is located at (6, –2.5). Write the ordered pair for point D.
Type below:
__________

Answer:
The point D is at (2, -2.5)

Explanation:
grade 6 chapter 3 Page no. 180 image 1
The points A, B, C, and D on a coordinate plane can be connected to form a rectangle. Point A is located at (2, 0), point B is located at (6, 0), and point C is located at (6, –2.5). The point D is at (2, -2.5)

Question 36.
Identify Relationships Explain how you can tell that the line segment connecting two points is vertical without graphing the points.
Type below:
__________

Answer:
The line segment connecting two points is vertical. By calculating the slope, we can say that the line segment connecting two points is vertical without graphing the points.

Question 37.
For numbers 37a–37d, select True or False for each statement.
37a. Point A (2, –1) is to the right of the y-axis and below the x-axis.
37b. Point B (– 5,2) is to the left of the y-axis and below the x-axis.
37c. Point C (3, 2) is to the right of the y-axis and above the x-axis.
37d. Point D (–2, –1) is to the left of the y-axis and below the x-axis.
37a. __________
37b. __________
37c. __________
37d. __________

Answer:
37a. True
37b. False
37c. True
37d. True

Rational Numbers and the Coordinate Plane – Page No. 181

Write the ordered pair for the point. Give approximate coordinates when necessary.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 24

Question 1.
A
Type below:
__________

Answer:
(1, 0.5)

Explanation:
To find the x-coordinate, move 1 unit to the right.
To find y-coordinate, move 0.5 units up.
Point A is located at (1, 0.5)

Question 2.
B
Type below:
__________

Answer:
(-0.75, -2.5)

Explanation:
To find the x-coordinate, move 0.75 units to the left.
To find y-coordinate, move 2.5 units down.
Point B is located at (-0.75, -2.5)

Question 3.
C
Type below:
__________

Answer:
(2, -1.5)

Explanation:
To find the x-coordinate, move 2 units to the right.
To find y-coordinate, move 1.5 units down.
Point C is located at (2, -1.5)

Question 4.
D
Type below:
__________

Answer:
(-1.5, 0)

Explanation:
To find the x-coordinate, move 1.5 units to the left.
To find y-coordinate, move 0 units.
Point D is located at (-1.5, 0)

Graph and label the point on the coordinate plane.

Question 5.
G(−\(\frac{1}{2}\), 1 \(\frac{1}{2}\))
Type below:
__________

Answer:
The x-coordinate is negative. Move 0.5 units to the left.
y-coordinate is positive. Move 1.5 units up

Explanation:
-1/2 = -0.5
1 1/2 = 3/2 = 1.5

Question 6.
H(0, 2.50)
Type below:
__________

Answer:
The x-coordinate is positive. Move 0 units.
y-coordinate is positive. Move 2.5 units up

Question 7.
J(−1 \(\frac{1}{2}\), \(\frac{1}{2}\))
Type below:
__________

Answer:
The x-coordinate is negative. Move 1.5 units to the left.
y-coordinate is positive. Move 0.5 units up

Explanation:
-1 1/2 = -3/2 = -1.5
1/2 = 0.5

Question 8.
K(1, 2)
Type below:
__________

Answer:
The x-coordinate is positive. Move 1 unit to the right.
y-coordinate is positive. Move 2 units up

Question 9.
L(−1 \(\frac{1}{2}\), −2 \(\frac{1}{2}\))
Type below:
__________

Answer:
The x-coordinate is negative. Move 1.5 units to the left.
y-coordinate is negative. Move 2.5 units down

Explanation:
-1 1/2 = -3/2 = -1.5
-2 1/2 = -5/2 = -2.5

Question 10.
M(1, -0.5)
Type below:
__________

Answer:
The x-coordinate is positive. Move 1 unit to the up.
y-coordinate is negative. Move 0.5 units down

Question 11.
N(\(\frac{1}{4}\), 1 \(\frac{1}{2}\))
Type below:
__________

Answer:
The x-coordinate is positive. Move 0.25 units to the right.
y-coordinate is positive. Move 1.5 units up

Question 12.
P(1.25, 0)
Type below:
__________

Answer:
The x-coordinate is positive. Move 1.25 units to the right.
y-coordinate is positive. Move 0 units

grade 6 chapter 3 Page no. 180 image 2

Problem Solving

Use the map for 13–15.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 25

Question 13.
What is the ordered pair for the city hall?
Type below:
__________

Answer:
(-1, 0.5)

Explanation:
To find the x-coordinate, move 1 unit to the left.
To find y-coordinate, move 0.5 units up.
City Hall is located at (-1, 0.5)

Question 14.
The post office is located at (\(\frac{−1}{2}\), 2). Graph and label a point on the map to represent the post office.
Type below:
__________

Answer:
grade 6 chapter 3 Page no. 181 image 1

Explanation:
The x-coordinate is negative. Move 0.5 units to the left.
y-coordinate is positive. Move 2 units up

Question 15.
Describe how to graph the ordered pair (−1, 4.5).
Type below:
__________

Answer:
The x-coordinate is negative. Move 1 unit to the left.
y-coordinate is positive. Move 4.5 units up

Lesson Check – Page No. 182

Question 1.
An artist uses a coordinate plane to create a design. As part of the design, the artist wants to graph the point (−6.5, 2). How should the artist graph this point?
Type below:
__________

Answer:
The Artist should go 6.5 units to the left on the x-axis and then 2 units up on the y-axis giving:
graph {((x + 6.5)^2 + (y – 2)^2 – 0.0125) = 0 [-10, 5, -5, 2.5]}

Question 2.
What are the coordinates of the campground?
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 26
Type below:
__________

Answer:
(-1, -1.5)

Explanation:
The x-coordinate is negative. Move 1 unit to the left.
y-coordinate is negative. Move 1.5 units down

Spiral Review

Question 3.
Four students volunteer at the hospital. Casey volunteers 20.7 hours, Danielle 20 \(\frac{3}{4}\) hours, Javier 18 \(\frac{9}{10}\) hours, and Forrest, 20 \(\frac{18}{25}\) hours. Who volunteered the greatest number of hours?
__________

Answer:
Danielle volunteered the greatest number of hours

Explanation:
Danielle volunteered the most. She did 20.75 hours while Forest had 20.72, Casey had 20.7 and Javier had the least at 18.90 hours.

Question 4.
Directions for making a quilt say to cut fifteen squares with sides that are 3.625 inches long. What is the side length written as a fraction?
_____ \(\frac{□}{□}\)

Answer:
3\(\frac{5}{8}\)

Explanation:
3.625 = 3 0.625
3.625 = 3 0.625(1000)/1000
3.625 = 3 625/1000
3.625 = 3 (625/125) / (1000/125)
3.625 = 3 5/8
The decimal length of the side of the squares (3.625 inches long) witten as a fraction is 3 5/8 inches long.

Question 5.
Cam has a piece of plywood that is 6 \(\frac{7}{8}\) feet wide. He is going to cut shelves from the plywood that are each 1 \(\frac{1}{6}\) feet wide. Which is a good estimate for the number of shelves Cam can make?
Type below:
__________

Answer:
5 shelves

Explanation:
6 7/8= 55/8
6 1/6= 7/6
first, find common denominators
55/8 × 3= 165/24
7/6 × 4= 28/24
165/24 divided by 28/24 is the same as 165/24 time 24/28
so that equals 3960/672 = 5.8928
About 5 shelves

Question 6.
Zach has \(\frac{3}{4}\) hour to play video games. It takes him \(\frac{1}{12}\) hour to set up the system. Each round of his favorite game takes \(\frac{1}{6}\) hour. How many rounds can he play?
_____ rounds

Answer:
4 rounds

Explanation:
Zach has 3/4 hour to play video games. it takes him 1/12 hour to set up the system. Each round of his favorite game takes 1/6 hours.
1) Zach has 3/4 hour to play video games
Convert to minutes
1 hour = 60 minutes
3/4 × 60 = 45 minutes
2) It takes him an hour to set up the system
Convert to minutes
1/12 × 60 = 5 minutes
3) 45 minutes – 5 minutes = 40 minutes
4) Each round of his favorite game takes an hour
Convert to minutes
1/6 × 60 = 10 minutes
5) Divide the time available to play video games by the time each round of his favorite game
40/10 = 4 rounds

Share and Show – Page No. 185

Identify the quadrant where the point is located.

Question 1.
(2, -5)
Type below:
__________

Answer:
Quadrant IV

Explanation:
The x-coordinate is positive. So, the point is 2 units to the right of the origin.
Since the point is to the right of the origin, it must be located in either
Quadrant I or Quadrant IV
The y-coordinate is negative, so the point is 5 units down from the origin.
Since the point is down the origin, it must be located in Quadrant IV.
Check by graphing the point (2, -5) on the coordinate plane.
Quadrant IV.

Question 2.
(4, 1)
Type below:
__________

Answer:
Quadrant I

Explanation:
The x-coordinate is positive. So, the point is 4 units to the right of the origin.
Since the point is to the right of the origin, it must be located in either
Quadrant I or Quadrant IV
y-coordinate is positive, so the point is 1 unit up from the origin.
Since the point is up to the origin, it must be located in Quadrant I.
Check by graphing the point (4, 1) on the coordinate plane.
Quadrant I.

Question 3.
(-6, -2)
Type below:
__________

Answer:
Quadrant III

Explanation:
The x-coordinate is negative. So, the point is 6 units to the left of the origin.
Since the point is to the left of the origin, it must be located in either
Quadrant II or Quadrant III
The y-coordinate is negative, so the point is 2 units down from the origin.
Since the point is down the origin, it must be located in Quadrant III.
Quadrant III.

Question 4.
(-7, 3)
Type below:
__________

Answer:
Quadrant II

Explanation:
The x-coordinate is negative. So, the point is 7 units to the left of the origin.
Since the point is to the left of the origin, it must be located in either
Quadrant II or Quadrant III
The y-coordinate is positive, so the point is 3 units up from the origin.
Since the point is up to the origin, it must be located in Quadrant II.
Quadrant II.

Question 5.
(8, 8)
Type below:
__________

Answer:
Quadrant I

Explanation:
The x-coordinate is positive. So, the point is 8 units to the right of the origin.
Since the point is to the right of the origin, it must be located in either
Quadrant I or Quadrant IV
The y-coordinate is positive, so the point is 8 units up from the origin.
Since the point is up to the origin, it must be located in Quadrant I.
Quadrant I.

Question 6.
(1, -1)
Type below:
__________

Answer:
Quadrant IV

Explanation:
The x-coordinate is positive. So, the point is 1 unit to the right of the origin.
Since the point is to the right of the origin, it must be located in either
Quadrant I or Quadrant IV
The y-coordinate is negative, so the point is 1 unit down from the origin.
Since the point is down to the origin, it must be located in Quadrant IV.
Quadrant IV.

The two points are reflections of each other across the x- or y-axis. Identify the axis.

Question 7.
(-1, 3) and (1, 3)
Type below:
__________

Answer:
y-axis

Explanation:
The given x-axis points are -1 and 1
The y-axis points are 3 and 3
The y-axis points are reflections of each other

Ordered Pair Relationships Lesson 3.8 Question 8.
(4, 4) and (4, -4)
Type below:
__________

Answer:
x-axis

Explanation:
The given x-axis points are 4 and 4
The y-axis points are 4 and -4
The x-axis points are reflections to each other

Question 9.
(2, -9) and (2, 9)
Type below:
__________

Answer:
x-axis

Explanation:
The given x-axis points are 2 and 2
The y-axis points are -9 and 9
The x-axis points are reflections to each other

Question 10.
(8, 1) and (-8, 1)
Type below:
__________

Answer:
y-axis

Explanation:
The given x-axis points are 8 and -8
The y-axis points are 1 and 1
The y-axis points are reflections to each other

On Your Own

Identify the quadrant where the point is located.

Question 11.
(-8, -9)
Type below:
__________

Answer:
Quadrant III

Explanation:
The x-coordinate is negative. So, the point is 8 units to the left of the origin.
Since the point is to the left of the origin, it must be located in either
Quadrant II or Quadrant III
The y-coordinate is negative, so the point is 9 units down from the origin.
Since the point is down to the origin, it must be located in Quadrant III.
Quadrant III.

Question 12.
(12, 1)
Type below:
__________

Answer:
Quadrant I

Explanation:
The x-coordinate is positive. So, the point is 12 units to the right of the origin.
Since the point is to the right of the origin, it must be located in either
Quadrant I or Quadrant IV
The y-coordinate is positive, so the point is 1 unit up from the origin.
Since the point is up to the origin, it must be located in Quadrant I.
Quadrant I.

Question 13.
(-13, 10)
Type below:
__________

Answer:
Quadrant II

Explanation:
The x-coordinate is negative. So, the point is 13 units to the left of the origin. Since the point is to the left of the origin, it must be located in either
Quadrant II or Quadrant III
The y-coordinate is negative, so the point is 10 units up from the origin.
Since the point is up to the origin, it must be located in Quadrant II.
Quadrant II.

Question 14.
(5, -20)
Type below:
__________

Answer:
Quadrant IV

Explanation:
The x-coordinate is positive. So, the point is 5 units to the right of the origin.
Since the point is to the right of the origin, it must be located in either
Quadrant I or Quadrant IV
The y-coordinate is negative, so the point is 20 units down from the origin.
Since the point is down to the origin, it must be located in Quadrant IV.
Quadrant IV.

The two points are reflections of each other across the x- or y-axis. Identify the axis.

Question 15.
(-9, -10) and (-9, 10)
Type below:
__________

Answer:
x-axis

Explanation:
The given x-axis points are -9 and -9
The y-axis points are -10 and 10
The x-axis points are reflections to each other

Question 16.
(21, -31) and (21, 31)
Type below:
__________

Answer:
x-axis

Explanation:
The given x-axis points are 21 and 21
The y-axis points are -31 and 31
The x-axis points are reflections to each other

Question 17.
(15, -20) and (-15, -20)
Type below:
__________

Answer:
y-axis

Explanation:
The given x-axis points are 15 and -15
The y-axis points are -20 and -20
The y-axis points are reflections to each other

Give the reflection of the point across the given axis.

Question 18.
(−7, −7), y-axis
Type below:
__________

Answer:
(7, -7)

Explanation:
The x-axis point is -7.
So, the reflection of point 7

Question 19.
(−15, 18), x-axis
Type below:
__________

Answer:
(-15, -18)

Explanation:
The y-axis point is 18.
So, the reflection of a point -18

Question 20.
(11, 9), x-axis
Type below:
__________

Answer:
(11, -9)

Explanation:
The y-axis point is 9.
So, the reflection of a point -9

Problem Solving + Applications – Page No. 186

Use the map of Gridville for 21–23.

Question 21.
The library’s location has opposite x- and y-coordinates as City Hall. Across which streets could you reflect City Hall’s location to find the library’s location?
Type below:
__________

Answer:
The library’s location has opposite x- and y-coordinates as City Hall.
City Hall = (2, -3)
The opposite x- and y-coordinates of City Hall = (-2, 3)
So, the library’s location is (-2, 3)

Question 22.
Each unit on the map represents 1 mile. Gregory leaves his house at (−5, 4), cycles 4 miles east, 6 miles south, and 1 mile west. In which quadrant of the city is he now?
Type below:
__________

Answer:
Quadrant III

Explanation:
Gregory leaves his house at (−5, 4)
cycles 4 miles east = -5 + 4 = -1; (-1, 4)
6 miles south = (-1, -1)
1 mile west (-2, -1)
So, he is now in Quadrant III

Question 23.
The bus station has the same x-coordinate as City Hall but the opposite y-coordinate. In which quadrant of the city is the bus station located?
Type below:
__________

Answer:
Quadrant I

Explanation:
The bus station has the same x-coordinate as City Hall but the opposite y-coordinate.
City Hall = (2, -3)
The opposite y-coordinate = 3
Bus station located at (2, 3)
Bus station located at Quadrant I

Question 24.
Describe Relationships Describe the relationship between the locations of the points (2, 5) and (2, −5) on the coordinate plane.
Type below:
__________

Answer:
(2, 5) and (2, −5) have the same x-coordinate.
They have the opposite y-coordinate.

Question 25.
Identify the quadrant where each point is located. Write each point in the correct box.
(−1, 3), (4, −2), (−3, −2), (1, −3), (−1, 2), (3, 4)
Type below:
__________

Answer:
(−1, 3) = Quadrant II
(4, −2) = Quadrant IV
(−3, −2) = Quadrant III
(1, −3) = Quadrant IV
(−1, 2) = Quadrant II
(3, 4) = Quadrant I

Problem Solving + Applications – Page No. 187

Identify the quadrant where the point is located.

Question 1.
(10, -2)
Type below:
__________

Answer:
Quadrant IV

Explanation:
The x-coordinate is positive. So, the point is 10 units to the right of the origin.
Since the point is to the right of the origin, it must be located in either
Quadrant I or Quadrant IV
The y-coordinate is negative, so the point is 2 units down from the origin.
Since the point is down the origin, it must be located in Quadrant IV.
Quadrant IV

Question 2.
(-5, -6)
Type below:
__________

Answer:
Quadrant III

Explanation:
The x-coordinate is negative. So, the point is 5 units to the left of the origin.
Since the point is to the left of the origin, it must be located in either
Quadrant II or Quadrant III
The y-coordinate is negative, so the point is 6 units down from the origin.
Since the point is down the origin, it must be located in Quadrant III.
Quadrant III.

Question 3.
(3, 7)
Type below:
__________

Answer:
Quadrant I

Explanation:
The x-coordinate is positive. So, the point is 3 units to the right of the origin.
Since the point is to the right of the origin, it must be located in either
Quadrant I or Quadrant IV
y-coordinate is positive, so the point is 7 units up from the origin.
Since the point is up to the origin, it must be located in Quadrant I.
Quadrant I

The two points are reflections of each other across the x- or y-axis. Identify the axis.

Question 4.
(5, 3) and (−5, 3)
Type below:
__________

Answer:
y-axis

Explanation:
The given x-axis points are 5 and -5
The y-axis points are 3 and 3
The y-axis points are reflections to each other

Question 5.
(−7, 1) and (−7, −1)
Type below:
__________

Answer:
x-axis

Explanation:
The given x-axis points are -7 and -7
The y-axis points are 1 and -1
The x-axis points are reflections of each other

Lesson 3.8 Answer Key 6th Grade Question 6.
(−2, 4) and (−2, −4)
Type below:
__________

Answer:
x-axis

Explanation:
The given x-axis points are -2 and -2
The y-axis points are 4 and -4
The x-axis points are reflections to each other

Give the reflection of the point across the given axis.

Question 7.
(−6, −10), y-axis
Type below:
__________

Answer:
(6, -10)

Explanation:
The x-axis point is -6.
So, the reflection of the point 6

Question 8.
(−11, 3), x-axis
Type below:
__________

Answer:
(-11, -3)

Explanation:
The y-axis point is -3.
So, the reflection of a point 3

Question 9.
(8, 2), x-axis
Type below:
__________

Answer:
(8, -2)

Explanation:
The y-axis point is 2.
So, the reflection of a point -2

Problem Solving

Question 10 .
A town’s post office is located at the point (7, 5) on a coordinate plane. In which quadrant is the post office located?
Type below:
__________

Answer:
Quadrant I

Explanation:
A town’s post office is located at the point (7, 5) on a coordinate plane.
The x-coordinate is positive. So, the point is 7 units to the right of the origin.
Since the point is to the right of the origin, it must be located in either
Quadrant I or Quadrant IV
The y-coordinate is positive, so the point is 5 units up from the origin.
Since the point is up the origin, it must be located in Quadrant I.
Quadrant I

Question 11.
The grocery store is located at a point on a coordinate plane with the same y-coordinate as the bank but with the opposite x-coordinate. The grocery store and bank are reflections of each other across which axis?
Type below:
__________

Answer:
y-axis

Explanation:
The grocery store is located at a point on a coordinate plane with the same y-coordinate as the bank but with the opposite x-coordinate.
The grocery store and bank are reflections of each other across the y-axis.

Question 12.
Explain to a new student how a reflection across the y-axis changes the coordinates of the original point.
Type below:
__________

Answer:
The coordinate plane with the same y-coordinate remains same but with the opposite x-coordinate.

Lesson Check – Page No. 188

Question 1.
In which quadrant does the point (−4, 15) lie?
Type below:
__________

Answer:
Quadrant II

Explanation:
The x-coordinate is negative. So, the point is 4 units to the left of the origin.
Since the point is to the left of the origin, it must be located in either
Quadrant II or Quadrant III
The y-coordinate is positive, so the point is 15 units up from the origin.
Since the point is up to the origin, it must be located in Quadrant II.
Quadrant II.

Question 2.
What are the coordinates of the point (10, −4) if it is reflected across the y–axis?
Type below:
__________

Answer:
(-10, -4)

Explanation:
coordinates of the point (-10, −4)
If it is reflected across the y–axis, coordinates of the point will be (-10, -4)

Spiral Review

Question 3.
Small juice bottles come in packages of 6. Yogurt treats come in packages of 10. Paula wants to have the exact same number of each item. What is the least number of bottles of juice and individual yogurt treats she will have? How many packages of each will she need?
Type below:
__________

Answer:
5 packages

Explanation:
Number of packages of small juice bottles = 6
Number of packages of yogurt = 10
For this, we will find the L.C.M. of 6 and 10 =30
So, there will be 5 packages of small juice bottles and 3 packages of yogurt.

Question 4.
Alison saves $29.26 each month. How many months will it take her to save enough money to buy a stereo for $339.12?
_____ month

Answer:
11 months

Explanation:
Round 29 and 339 to 30 and 340.
Divide 340 by 30
The answer should be 11.3 repeatings.
11 months

Question 5.
The library is 1.75 miles directly north of the school. The park is 0.6 miles directly south of the school. How far is the library from the park?
Type below:
__________

Answer:
2.35 miles

Explanation:
The library is 1.75 miles directly north of the school. The park is 0.6 miles directly south of the school.
1.75 + 0.6 would be 2.35 miles, the library to the parking.

Question 6.
Tours of the art museum are offered every \(\frac{1}{3}\) hour starting at 10 A.M. The museum closes at 4:00 P.M. How many tours are offered each day?
_____ tours

Answer:
18 tours

Explanation:
Staring time of tours=10 am
Closing time of tours=4 pm
Duration of tours(10 am to 4 pm)=6 hours
Time for each tour= 1/3 hours
Total number of tours offered in a day= 6 × 3 = 18
Therefore, 18 tours offered each day.

Share and Show – Page No. 191

Find the distance between the pair of points.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 27

Question 1.
(−3, 1) and (2, 1)
_____ units

Answer:
5 units

Explanation:
The points have the same y-coordinate, so they are located on a horizontal line.
Find the distance between the x-coordinates of the point (-3, 1) and the point (2, 1)
|-3| = 3
3 + 2 = 5

Question 2.
(2, 1) and (2, -4)
_____ units

Answer:
5 units

Explanation:
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (2, 1) and the point (2, -4)
|-4| = 4
1 + 4 = 5

Question 3.
(2, -4) and (4, -4)
_____ units

Answer:
2 units

Explanation:
The points have the same y-coordinate, so they are located on a horizontal line.
Find the distance between the x-coordinates of the point (2, -4) and the point (4, -4)
4 – 2 = 2

Question 4.
(-3, 3) and (-3, 1)
_____ units

Answer:
2 units

Explanation:
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (-3, 3) and the point (-3, 1)
3 – 1 = 2

On Your Own

Practice: Copy and Solve Graph the pair of points. Then find the distance between them.

Question 5.
(0, 5) and (0, -5)
_____ units

Answer:
10 units

Explanation:
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (0, 5) and the point (0, -5)
|-5| = 5
5 + 5 = 10

Question 6.
(1, 1) and (1, -3)
_____ units

Answer:
4 units

Explanation:
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (1, 1) and the point (1, -3)
|-3| = 3
1 + 3 = 4

Question 7.
(-2, -5) and (-2, -1)
_____ units

Answer:
4 units

Explanation:
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (-2, -5) and the point (-2, -1)
|-5| = 5
|-1| = 1
5 – 1 = 4

Question 8.
(-7, 3) and (5, 3)
_____ units

Answer:
12 units

Explanation:
The points have the same y-coordinate, so they are located on a horizontal line.
Find the distance between the x-coordinates of the point (-7, 3) and the point (5, 3)
|-7| = 7
7 + 5 = 12

Question 9.
(3, -6) and (3, -10)
_____ units

Answer:
4 units

Explanation:
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (3, -6) and the point (3, -10)
|-6| = 6
|-10| = 10
10 – 6 = 4

Question 10.
(8, 0) and (8, -8)
_____ units

Answer:
8 units

Explanation:
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (8, 0) and the point (8, -8)
|-8| = 8
0 + 8 = 8

Use Reasoning Algebra Write the coordinates of a point that is the given distance from the given point.

Question 11.
4 units from (3, 5)
Type below:
__________

Answer:
1 or 9

Explanation:
4 units from (3, 5)
(3, 9) or (3, 1)

Question 12.
6 units from (2, 1)
Type below:
__________

Answer:
8 or -4

Explanation:
6 units from (2, 1)
(8, 1) or (-4, 1)

Question 13.
7 units from (−4, −1)
Type below:
__________

Answer:
-8 or 6

Explanation:
7 units from (−4, −1)
(-8, -1) or (-8, 6)

Problem Solving + Applications – Page No. 192

An archaeologist is digging at an ancient city. The map shows the locations of several important finds. Each unit represents 1 kilometer. Use the map for 14–18.

Question 14.
How far is it from the stadium to the statue?
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 28
_____ km

Answer:
8 km

Explanation:
Stadium = (4, 5)
statue = (4, -3)
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (4, 5) and the point (4, -3)
|-3| = 3
5 + 3 = 8

Question 15.
The archaeologist drives 3 km south from the palace. How far is he from the market?
_____ km

Answer:
3 km

Explanation:
The palace is at the origin (0, 0)
So, the answer is 3 km

Question 16.
The archaeologist’s campsite is located at (−9, −3). How far is it from the campsite to the market?
_____ km

Answer:
11 km

Explanation:
the campsite is located at (−9, −3)
the market is located at (-2, -3)
The points have the same y-coordinate, so they are located on a horizontal line.
Find the distance between the x-coordinates of the point (−9, −3) and the point (-2, -3)
|-9| = 9
|-2| = 2
9 + 2 = 11
campsite is 11 km far to the market

Question 17.
The archaeologist rode east on a donkey from the Great Gate, at (−11, 4), to the Royal Road. Then he rode south to the palace. How far did the archaeologist ride?
_____ km

Answer:
15 km

Explanation:
The archaeologist rode east on a donkey from the Great Gate, at (−11, 4), to the Royal Road. Then he rode south to the palace.
First, he needs to move |-11| = 11 km
Then, he needs to move 4 km
4 + 11 = 15 km

Question 18.
Generalize Explain how you could find the distance from the palace to any point on the Imperial Highway.
Type below:
__________

Answer:
The distance varies according to the points on the Imperial Highway

Question 19.
Select the pairs of points that have a distance of 10 between them. Mark all that apply.
(3, −6) and (3, 4)
( −3, 8) and (7, 8)
(4, 5) and (6, 5)
(4, 1) and (4, 11)
Type below:
__________

Answer:
(3, −6) and (3, 4)
( −3, 8) and (7, 8)
(4, 5) and (6, 5)

Explanation:
6 + 4 = 10
3 + 7 = 10
4 + 6 = 10

Distance on the Coordinate Plane – Page No. 193

Find the distance between the pair of points.

Question 1.
(1, 4) and (−3, 4)
_____ units

Answer:
4 units

Explanation:
The points have the same y-coordinate, so they are located on a horizontal line.
Find the distance between the x-coordinates of the point (1, 4) and the point (−3, 4)
|-3| = 3
1 + 3 = 4

Question 2.
(7, −2) and (11, −2)
_____ units

Answer:
3 units

Explanation:
The points have the same y-coordinate, so they are located on a horizontal line.
Find the distance between the x-coordinates of the point (7, −2) and the point (11, −2)
11 – 7 = 3

Question 3.
(6, 4) and (6, −8)
_____ units

Answer:
12 units

Explanation:
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (6, 4) and the point (6, −8)
|-8| = 8
4 + 8 = 12

Question 4.
(8, −10) and (5, −10)
_____ units

Answer:
3 units

Explanation:
The points have the same y-coordinate, so they are located on a horizontal line.
Find the distance between the x-coordinates of the point (8, −10) and the point (5, −10)
8 – 5 = 3

Question 5.
(−2, −6) and (−2, 5)
_____ units

Answer:
11 units

Explanation:
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (−2, −6)and the point (−2, 5)
|-6| = 6
6 + 5 = 11

Question 6.
(−5, 2) and (−5, −4)
_____ units

Answer:
6 units

Explanation:
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (−5, 2) and the point (−5, −4)
|-4| = 4
2 + 4 = 6

Write the coordinates of a point that is the given distance from the given point.

Question 7.
5 units from (−1, −2)
Type below:
__________

Answer:
-6 or 4

Explanation:
5 units from (−1, −2)
(-6, -2) or (4, -2)

Question 8.
8 units from (2, 4)
Type below:
__________

Answer:
12 or -4

Explanation:
8 units from (2, 4)
(2, 12) or (2, -4)

Question 9.
3 units from (−7, −5)
Type below:
__________

Answer:
-2 or -8

Explanation:
3 units from (−7, −5)
(-7, -2) or (-7, -8)

Problem Solving

The map shows the locations of several areas in an amusement park. Each unit represents 1 kilometer.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 29

Question 10.
How far is the Ferris wheel from the rollercoaster?
_____ km

Answer:
4 km

Explanation:
Ferris wheel = (5, 6)
rollercoaster = (5, 2)
6 – 2 = 4

Question 11.
How far is the water slide from the restrooms?
_____ km

Answer:
7 km

Explanation:
water slide = (-3, -4)
restrooms = (4, -4)
3 + 4 = 7

Question 12.
Graph the points (23, 3), (23, 7), and (4, 3) on a coordinate plane. Explain how to find the distance from (23, 3) to (23, 7) and from (23, 3) and (4, 3).
Type below:
__________

Answer:

Explanation:
(23, 3) to (23, 7)
The points have the same x-coordinate, so they are located on a vertical line.
Find the distance between the y-coordinates of the point (23, 3) and the point (23, 7)
7 – 3 = 4
(23, 3) and (4, 3).
The points have the same y-coordinate, so they are located on a horizontal line.
Find the distance between the x-coordinates of the point (23, 3) and the point (4, 3)
4 – 3 = 1

Lesson Check – Page No. 194

Question 1.
What is the distance between (4, −7) and (−5, −7)?
_____ units

Answer:
9 units

Explanation:
(4, −7) and (−5, −7)
The points have the same y-coordinate, so they are located on a horizontal line.
Find the distance between the x-coordinates of the point (4, −7) and the point (−5, −7)
|-5| = 5
5 + 4 = 9

Question 2.
Point A and point B are 5 units apart. The coordinates of point A are (3, −9). The y–coordinate of point B is −9. What is a possible x–coordinate for point B?
Type below:
__________

Answer:
8 or -2

Explanation:
Point A and point B are 5 units apart. The coordinates of point A are (3, −9). The y–coordinate of point B is −9.
The points have the same y-coordinate, so they are located on a horizontal line.
the distance between the x-coordinates = 5
So, 8 or -2

Spiral Review

Question 3.
An apple is cut into 10 pieces. 0.8 of the apple is eaten. Which fraction, in simplest form, represents the amount of apple that is left?
\(\frac{□}{□}\)

Answer:
\(\frac{1}{5}\)

Explanation:
An apple is cut into 10 pieces. 0.8 of the apple is eaten.
10/10 – 8/10 = 2/10 = 1/5 amount of apple left.

Question 4.
A carton contains soup cans weighing a total of 20 pounds. Each can weighs 1 \(\frac{1}{4}\) pounds. How many cans does the carton contain?
_____ cans

Answer:
16 cans

Explanation:
Divide 20 with 5/4 (=1 1/4)
So, 20 × 4/5 which would be 80/5 = 16 cans

Question 5.
List −1, \(\frac{1}{4}\), and −1 \(\frac{2}{3}\) in order from greatest to least.
Type below:
__________

Answer:
\(\frac{1}{4}\), -1, −1 \(\frac{2}{3}\)

Explanation:
\(\frac{1}{4}\) > -1 > −1 \(\frac{2}{3}\)

Question 6.
The point located at (3, −1) is reflected across the y−axis. What are the coordinates of the reflected point?
Type below:
__________

Answer:
(-3, -1)

Explanation:
The point located at (3, −1) is reflected across the y−axis.
(-3, -1)

Share and Show – Page No. 197

Question 1.
Busby County is rectangular. A map of the county on a coordinate plane shows the vertices of the county at (−5, 8), (8, 8), (8, −10), and (−5, −10). Each unit on the map represents 1 mile. What is the county’s perimeter?
_____ miles

Answer:
62 miles

Explanation:
Busby County is rectangular. A map of the county on a coordinate plane shows the vertices of the county at (−5, 8), (8, 8), (8, −10), and (−5, −10).
The distance of (−5, 8) is 8
The distance of (8, 8) is 8
The distance between -5 to 8 is 5 + 8 = 13
The distance of (8, −10) is 10
The distance of (−5, −10) is 10
The distance between -5 to 8 is 5 + 8 = 13
8 + 8 + 13 + 10 + 10 + 13 = 62

Question 2.
What if the vertices of the county were (−5, 8), (8, 8), (8, −6), and (−5, −6)? What would the perimeter of the county be?
_____ miles

Answer:
54 miles

Explanation:
The distance from – 5 to 8 is 5 + 8 = 13
The distance from – 5 to 8 is 5 + 8 = 13
The distance from 8 to -6 is 8 + 6 = 14
The distance from 8 to -6 is 8 + 6 = 14
13 + 14 + 13 + 14 = 54

Question 3.
On a coordinate map of Melville, a restaurant is located at (−9, −5). A laundry business is located 3 units to the left of the restaurant on the map. What are the map coordinates of the laundry business?
Type below:
__________

Answer:
(-12, -5)

Explanation:
On a coordinate map of Melville, a restaurant is located at (−9, −5).
A laundry business is located 3 units to the left of the restaurant on the map.(-12, -5) is the answer

Question 4.
The library is 4 blocks north and 9 blocks east of the school. The museum is 9 blocks east and 11 blocks south of the school. How far is it from the library to the museum?
_____ blocks

Answer:
15 blocks

Explanation:
the library is 4 blocks north = (0, 4)
9 blocks east = (9, 4)
The museum is 9 blocks east = (9, 0)
11 blocks south = (9, -11)
4 + 11 = 15

Problem Solving + Applications – Page No. 198

Question 5.
Make Sense of Problems Diana left her campsite at (2, 6) on a map of Big Trees Park, hiked to Redwood Grove at (−5, 6), and continued on to Bass Lake at (−5, −3). Each unit on the map represents 1 kilometer. How far did Diana hike?
_____ km

Answer:
16 km

Explanation:
Diana left her campsite at (2, 6) on a map of Big Trees Park, hiked to Redwood Grove at (−5, 6), 2 + 5 = 7
and continued on to Bass Lake at (−5, −3), 6 + 3 = 9
7 + 9 = 16 km

Question 6.
Hector left his house at (−6, 13) on a map of Coleville and walked to the zoo at (−6, 2). From there he walked east to his friend’s house. He walked a total distance of 25 blocks. If each unit on the map represents one block, what are the coordinates of Hector’s friend’s house?
Type below:
__________

Answer:
(19,2) should be the answer. He was -6 above the x-axis. Going east for 25 unit means he walked horizontally keeping the y-axis same

Question 7.
In November, the price of a cell phone was double the price in March. In December, the price was $57, which was $29 less than the price in November. What was the price of the cell phone in March?
$ _____

Answer:
$172

Explanation:
In November, the price of a cell phone was double the price in March. In December, the price was $57, which was $29 less than the price in November.
29 + 57 = 86
86 × 2 = $172

Question 8.
A map of the city holding the Olympics is placed on a coordinate plane. Olympic Stadium is located at the origin of the map. Each unit on the map represents 2 miles.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 30
Graph the locations of four other Olympic buildings.

Max said the distance between the Aquatics Center and the Olympic Village is greater than the distance between the Media Center and the Basketball Arena. Do you agree with Max? Use words and numbers to support your answer
Type below:
__________

Answer:
Max said is correct
Aquatics Center = (8, 4)
Olympic Village = (-8, 4)
The distance = 8 + 8 = 16
Media Center = (4, -5)
Basketball Arena = (-8, -5)
The distance = 4 + 8 = 12

Problem Solving The Coordinate Plane – Page No. 199

Read each problem and solve.

Question 1.
On a coordinate map of Clifton, an electronics store is located at (6, −7). A convenience store is located 7 units north of the electronics store on the map. What are the map coordinates of the convenience store?
Type below:
__________

Answer:
(6, 0)

Explanation:
On a coordinate map of Clifton, an electronics store is located at (6, −7). A convenience store is located 7 units north of the electronics store on the map.
The map coordinates of the convenience store is (6, 0)

Question 2.
Sonya and Lucas walk from the school to the library. They walk 5 blocks south and 4 blocks west to get to the library. If the school is located at a point (9, −1) on a coordinate map, what are the map coordinates of the library?
Type below:
__________

Answer:
(5, -6)

Explanation:
The school is at (9, −1)
5 blocks South mean that you subtract 5 from the y coordinate:
(9, -1-5) = (9, -6)
4 blocks West means that you subtract 4 from the x coordinate:
(9-4, -6) = (5, -6)
The library is at (5, -6)

Question 3.
On a coordinate map, Sherry’s house is at the point (10, −2) and the mall is at point (−4, −2). If each unit on the map represents one block, what is the distance between Sherry’s house and the mall?
_____ blocks

Answer:
14 blocks

Explanation:
(10,-2)
(-4,-2)
x value- 10-(-4)=14
y value- Since both y values are the same, you don’t do anything.

Question 4.
Arthur left his job at (5, 4) on a coordinate map and walked to his house at (5, −6). Each unit on the map represents 1 block. How far did Arthur walk?
_____ blocks

Answer:
10 blocks

Explanation:
He walked 10 blocks. 4 to -6 is 10. 4, 3, 2, 1, 0, -1, -2, -3, -4, -5, -6.

Question 5.
A fire station is located 2 units east and 6 units north of a hospital. If the hospital is located at a point (−2, −3) on a coordinate map, what are the coordinates of the fire station?
Type below:
__________

Answer:
(0, 3)

Explanation:
the hospital is located at a point (−2, −3).
A fire station is located 2 units east and 6 units north of a hospital.
(-2 +2, -3+6) = (0,3)

Question 6.
Xavier’s house is located at the point (4, 6). Michael’s house is 10 blocks west and 2 blocks south of Xavier’s house. What are the coordinates of Michael’s house?
Type below:
__________

Answer:
(-6, 4)

Explanation:
the coordinates are -6,4. (x-10,y-2)

Question 7.
Write a problem that can be solved by drawing a diagram on a coordinate plane.
Type below:
__________

Answer:
On a coordinate map, Sherry’s house is at the point (10, −2) and the mall is at point (−4, −2). If each unit on the map represents one block, what is the distance between Sherry’s house and the mall?

Lesson Check – Page No. 200

Question 1.
The points (−4, −4), (−4, 4), (4, 4), and (4, −4) form a square on a coordinate plane. How long is a side length of the square?
_____ units

Answer:
8 units

Explanation:
-4 + 4 = 8 units
side length of the square is 8 units

Question 2.
On a coordinate map, the museum is located at (−5, 7). A park is located 6 units to the right of the museum on the map. What are the coordinates of the park?
Type below:
__________

Answer:
(1, 7)

Explanation:
On a coordinate map, the museum is located at (−5, 7). A park is located 6 units to the right of the museum on the map.
(1,7)

Spiral Review

Question 3.
On a grid Joe’s house is marked at (−5, −3) and Andy’s house is marked at (1, −3). What is the distance, on the grid, between Joe’s house and Andy’s house?
_____ units

Answer:
6 units

Explanation:
On a grid Joe’s house is marked at (−5, −3) and Andy’s house is marked at (1, −3).
|-5| = 5
5 + 0 = 5
0 + 1 = 1
5 + 1 = 6

Question 4.
In the last two years, Mari grew 2 \(\frac{1}{4}\) inches, Kim grew 2.4 inches, and Kate grew 2 \(\frac{1}{8}\) inches. Write the amounts they grew in order from least to greatest.
Type below:
__________

Answer:
2 \(\frac{1}{8}\), 2 \(\frac{1}{4}\), 2.4

Explanation:
In the last two years, Mari grew 2 \(\frac{1}{4}\) inches, Kim grew 2.4 inches, and Kate grew 2 \(\frac{1}{8}\) inches.
2 \(\frac{1}{4}\) = 9/4 = 2.25
2 \(\frac{1}{8}\) = 17/8 = 2.125
2.125, 2.25, 2.4

Question 5.
A jar of jelly that weighs 4.25 ounces costs $2.89. What is the cost of one ounce of jelly?
$ _____

Answer:
$0.68

Explanation:
A jar of jelly that weighs 4.25 ounces costs $2.89.
$2.89/4.25 = $0.68

Question 6.
Jan began with \(\frac{5}{6}\) pound of modeling clay. She used \(\frac{1}{5}\) of the clay to make decorative magnets. She divided the remaining clay into 8 equal portions. What is the weight of the clay in each portion?
\(\frac{□}{□}\) pounds

Answer:
\(\frac{1}{12}\) pounds

Explanation:
Weight of modelling clay is = 5/6 pounds
Part of clay used to make decorative magnets is = 1/5
Remaining part of clay = 1 – 1/5 = 4/5
So, Remaining part of clay is divided into 8 equal parts so, Weight of each clay is given by 4/5 × 5/6 × 1/8 = 1/12 pounds
So, weight of the clay in each portion is 1/12 pounds

Chapter 3 Review/Test – Page No. 201

Question 1.
For numbers 1a–1d, choose Yes or No to indicate whether the situation can be represented by a negative number.
1a. Sherri lost 100 points answering a question wrong. Yes No
1b. The peak of a mountain is 2,000 feet above sea level. Yes No
1c. Yong paid $25 for a parking ticket. Yes No
1d. A puppy gained 3 pounds. Yes No
1a. __________
1b. __________
1c. __________
1d. __________

Answer:
1a. Yes
1b. No
1c. No
1d. No

Question 2.
The low weekday temperatures for a city are shown.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 31
Part A
Using the information in the table, order the temperatures from lowest to highest.
Type below:
__________

Answer:
-7, -5, -3, 2, 3

Explanation:
Monday = -5
Tuesday = -3
Wednesday = 2
Thursday = -7
Friday = 3
-7, -5, -3, 2, 3

Question 2.
Part B
Explain how to use a vertical number line to determine the order.
Type below:
__________

Answer:
Place the -3, -5, -7, are below the 0. And place 2 and 3 are above the 0.

Page No. 202

Question 3.
For numbers 3a–3e, choose Yes or No to indicate whether the number is between –1 and –2.
3a. \(\frac{-4}{5}\) Yes No
3b. 1 \(\frac{2}{3}\) Yes No
3c. −1.3 Yes No
3d. −1 \(\frac{1}{4}\) Yes No
3e. −2 \(\frac{1}{10}\) Yes No
3a. __________
3b. __________
3c. __________
3d. __________
3e. __________

Answer:
3a. No
3b. No
3c. Yes
3d. Yes
3e. No

Explanation:
3a. \(\frac{-4}{5}\) = -0.8
3b. 1 \(\frac{2}{3}\) = 1.666
3c. -1.3
3d. −1 \(\frac{1}{4}\) = -1.25
3e. −2 \(\frac{1}{10}\) = -21/10 = -2.1

Question 4.
Compare \(\frac{-1}{5}\) and –0.9. Use numbers and words to explain your answer
Type below:
__________

Answer:
\(\frac{-1}{5}\) = -0.2
-0.9
-0.2 and -0.9 both are negative numbers. They lies between 0 and -1

Question 5.
Jeandre said |3| equals |–3|. Is Jeandre correct? Use a number line and words to support your answer.
Type below:
__________

Answer:
grade 6 chapter 3 Page no. 202 image 1

Explanation:
Yes, he is correct and he is referring to the absolute values of number 3 and -3. And by absolute value, this is the distance of the number from the origin zero (0) which is symbolized by two vertical lines, as |3| or |-3| is equal to 3.
The picture shows a number line where green is the origin zero (0). The purple line is the distance between 0 and 3 which is 3. The pink one is the distance of -3 from 0 which is also 3. Therefore, |3| equals |-3|

Question 6.
Write the values in order from least to greatest.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 32
Type below:
__________

Answer:
|2| |-4| |8| |-12|

Explanation:
|-4| = 4
|2| = 2
|-12| = 12
|8| = 8
2, 4, 8, 12

Question 7.
For numbers 7a–7d, select True or False for each statement.
7a. The x-coordinate of any point on the y-axis is 0. True False
7b. Point D(–2, 1) is to the left of the y-axis and below the x-axis. True False
7c. The point where the axes intersect is the origin. True False
7d. If both the x- and y- coordinates are positive, the point is to the right of the y-axis and below the x-axis. True False
__________
__________
__________
__________

Answer:
7a. True
7b. False
7c. True
7d. False

Page No. 203

Question 8.
Mia’s house is located at point (3, 4) on a coordinate plane. The location of Keisha’s house is the reflection of the location of Mia’s house across the y-axis. In what quadrant is Keisha’s house in?
Type below:
__________

Answer:
quadrant II

Explanation:
Mia’s house is located at point (3, 4) on a coordinate plane. The location of Keisha’s house is the reflection of the location of Mia’s house across the y-axis.
quadrant II is the answer.

Question 9.
Points A(3, 8) and B(–4, 8) are located on a coordinate plane. Graph the pair of points. Then find the distance between them. Use numbers and words to explain your answer.
Type below:
__________

Answer:

Explanation:
Points A(3, 8) and B(–4, 8) are located on a coordinate plane.
3 + 0 = 3
|-4| = 4
4 + 0 = 4
3 + 4 = 7
7 units

Page No. 204

Question 10.
The map shows the location J of Jose’s house and the location F of the football field. Jose is going to go to Tyrell’s house and then the two of them are going to go to the football field for practice.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 33
Part A
Tyrell’s house is located at point T, the reflection of point J across the y-axis. What are the coordinates of points T, J, and F?
Type below:
__________

Answer:
coordinates of points T (6, 8)
coordinates of points J (-6, 8), and
coordinates of points F(-5, 6)

Question 10.
Part B
If each unit on the map represents 1 block, what was the distance Tyrell traveled to the football field and what was the distance Jose traveled to the football field? Use numbers and words to explain your answer
Type below:
__________

Answer:
If each unit on the map represents 1 block, the distance Jose traveled to the football field
coordinates of points T (6, 8)
coordinates of points J (-6, 8)
|-6| = 6
6 + 6 = 12 units.
the distance Tyrell traveled to the football field
coordinates of points T (6, 8)
coordinates of points F(-5, 6)
6 + 5 = 11 units

Question 11.
For numbers 11a–11d, choose Yes or No to indicate whether the situation could be represented by the integer +3.
11a. A football team gains 3 yards on a play. Yes No
11b. A golfer’s score is 3 over par. Yes No
11c. A student answers a Yes No 3-point question correctly. Yes No
11d. A cat loses 3 pounds. Yes No
11a. __________
11b. __________
11c. __________
11d. __________

Answer:
11a. Yes
11b. Yes
11c. Yes
11d. No

Page No. 205

Question 12.
Jason used a map to record the elevations of five locations.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 34
Jason wrote the elevations in order from lowest to highest : -3, 5, 8 -18, -20.
Is Jason correct? Use words and numbers to explain why or why not. If Jason is incorrect, what is the correct order?
Type below:
__________

Answer:
Jason is incorrect.
the elevations in order from lowest to highest: -20, -18, -3, 5, 8

Question 13.
For numbers 13a–13d, select True or False for each statement.
13a. \(\frac{1}{5}\) is between 0 and 1. True False
13b. −2 \(\frac{2}{3}\) is between -1 and -2. True False
13c. −3 \(\frac{5}{8}\) is between -3 and -4. True False
13d. 4 \(\frac{3}{4}\) is between 3 and 4. True False
13a. __________
13b. __________
13c. __________
13d. __________

Answer:
13a. True
13b. False
13c. True
13d. False

Question 14.
Choose <, >, or =.
14a. 0.25 ο \(\frac{3}{4}\)
14b. 2 \(\frac{7}{8}\) ο 2.875
14c. \(\frac{1}{3}\) ο 0.325
14d. \(\frac{-3}{4}\) ο \(\frac{-1}{2}\)
0.25 ____ \(\frac{3}{4}\)
2 \(\frac{7}{8}\) _____ 2.875
\(\frac{1}{3}\) _____ 0.325
\(\frac{-3}{4}\) _____ \(\frac{-1}{2}\)

Answer:
0.25 < \(\frac{3}{4}\)
2 \(\frac{7}{8}\) = 2.875
\(\frac{1}{3}\) > 0.325
\(\frac{-3}{4}\) < \(\frac{-1}{2}\)

Explanation:
\(\frac{3}{4}\) = 0.75
0.25 < \(\frac{3}{4}\)
2 \(\frac{7}{8}\) = 23/8 = 2.875
2 \(\frac{7}{8}\) = 2.875
\(\frac{-3}{4}\) = -0.75
\(\frac{-1}{2}\) = -0.5

Page No. 206

Question 15.
Graph 4 and −4 on the number line.
Go Math Grade 6 Answer Key Chapter 3 Understand Positive and Negative Numbers img 35
Tyler says both 4 and −4 have an absolute value of 4. Is Tyler correct? Use the number line and words to explain why or why not.
Type below:__________

Answer:
Tyler is correct.
|-4| = 4
|4| = 4

Question 16.
Lindsay and Will have online accounts for buying music. Lindsay’s account balance is −$20 and Will’s account balance is −$15. Express each account balance as a debt and explain whose debt is greater.
Type below:
__________

Answer:
Lindsey is 5$ more in dept than Will.
Lindsey= -20$
Will= -15$

Question 17.
Explain how to graph points A(–3, 0), B(0, 0), and C(0, –3) on the coordinate plane. Then, explain how to graph point D, so that ABCD is a square.
Type below:
__________

Answer:
First place the points A(–3, 0), B(0, 0), and C(0, –3) on the coordinate plane.
The length from point A to point B is 3.
A square has equal lengths on each side.
So, to find D, Add 3 units to the left to C or down to A.
D(-3, -3)

Question 18.
Point A(2, –3) is reflected across the x-axis to point B. Point B is reflected across the y-axis to point C. What are the coordinates of point C? Use words and numbers to explain your answer.
Type below:
__________

Answer:
Quadrant III

Explanation:
Point A(2, –3) is reflected across the x-axis to point B. Point B is reflected across the y-axis to point C.
So, Point B is (2,3)
Point C is (-2, 3)
C is in Quadrant III

Conclusion:

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go-math-grade-6-answer-key-chapter-5-model-percents

Go Math Grade 6 Answer Key Chapter 5 Model Percents

Get free pdf of Go Math Grade 6 Answer Key Chapter 5 Model Percents. All the topics of Chapter 5 Model Percents are explained here along with images. Students who are preparing maths of Chapter 5 Model Percents can use the Go Math Grade 6 Answer Key. Get comfort learning by using HMH Go math Grade 6 Answer Key Chapter 5 Model Percents.

Go Math Grade 6 Chapter 5 Model Percents Answer Key

Step by step explanation is included in the Go Math Grade 6 Chapter 5 Model Percents Solution Key. Use all the concepts explanation to learn the maths in an easy way. The now who use Go Math Grade 6 Chapter 5 Model Percents Answer Key can get the good score in the exam with the best percentage of marks.

Lesson 1: Investigate • Model Percents

Lesson 2: Write Percents as Fractions and Decimals

Lesson 3: Write Fractions and Decimals as Percents

Mid-Chapter Checkpoint

Lesson 4: Percent of a Quantity

Lesson 5: Problem Solving • Percents

Lesson 6: Find the Whole from a Percent

Chapter 5 Review/Test

Share and Show – Page No. 271

Write a ratio and a percent to represent the shaded part.

Question 1.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 1
Type below:
_____________

Answer:
53% and \(\frac{53}{100}\)

Explanation:
53 squares are shaded out of 100.
So, 53% and 35/100 are the answers.

Question 2.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 2
Type below:
_____________

Answer:
1% and \(\frac{100}{100}\)

Explanation:
100 out of 100 squares are shaded
So, So, 1% and 100/100 are the answers.

Question 3.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 3
Type below:
_____________

Answer:
40% and \(\frac{40}{100}\)

Explanation:
40 squares are shaded out of 100.
So, 40% and 40/100 are the answers.

Model the percent and write it as a ratio.

Question 4.
30%
\(\frac{□}{□}\)

Answer:
grade 6 chapter 5 image 1

Explanation:
30% is 30 out of 100
30 out of 100 squares is 30/100
30% = \(\frac{30}{100}\)

Question 5.
5%
\(\frac{□}{□}\)

Answer:
grade 6 chapter 5 image 2

Explanation:
5% is 5 out of 100
5 out of 100 squares is 5/100
5% = \(\frac{5}{100}\)

Question 6.
75%
\(\frac{□}{□}\)

Answer:
grade 6 chapter 5 image 3

Explanation:
75% is 75 out of 100
75 out of 100 squares is 75/100
75% = \(\frac{75}{100}\)

Problem Solving + Applications

Question 7.
Use a Concrete Model Explain how to model 32% on a 10-by-10 grid. How does the model represent the ratio of 32 to 100?
Type below:
_____________

Answer:
grade 6 chapter 5 image 4

Percentage Questions for Grade 6 Question 8.
A floor has 100 tiles. There are 24 black tiles and 35 brown tiles. The rest of the tiles are white. What percent of the tiles are white?
_______ %

Answer:
41%

Explanation:
A floor has 100 tiles. There are 24 black tiles and 35 brown tiles.
24 + 35 = 59
100 – 59 = 41 tiles are white
41 tiles out of 100 are white tiles

Pose a Problem – Page No. 272

Question 9.
Javier designed a mosaic wall mural using 100 tiles in 3 different colors: yellow, blue, and red. If 64 of the tiles are yellow, what percent of the tiles are either red or blue?
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 4
To find the number of tiles that are either red or blue, count the red and blue squares. Or subtract the number of yellow squares, 64, from the total number of squares, 100.
36 out of 100 tiles are red or blue.
The ratio of red or blue tiles to all tiles is \(\frac{36}{100}\).
So, the percent of the tiles that are either red or blue is 36%.
Write another problem involving a percent that can be solved by using the mosaic wall mural.
Type below:
_____________

Answer:
Sam designed a mosaic wall mural using 100 squares using two colors. She represented the squares with red and blue colors. She has 54 red tiles. What percent of other tiles she can use with blue color?
100 – 54 = 46 blue tiles.

Question 10.
Select the 10-by-10 grids that model 45%. Mark all that apply.
Options:
a. Go Math Grade 6 Answer Key Chapter 5 Model Percents img 5
b. Go Math Grade 6 Answer Key Chapter 5 Model Percents img 6
c. Go Math Grade 6 Answer Key Chapter 5 Model Percents img 7
d. Go Math Grade 6 Answer Key Chapter 5 Model Percents img 8
e. Go Math Grade 6 Answer Key Chapter 5 Model Percents img 9

Answer:
a. Go Math Grade 6 Answer Key Chapter 5 Model Percents img 5
c. Go Math Grade 6 Answer Key Chapter 5 Model Percents img 7
e. Go Math Grade 6 Answer Key Chapter 5 Model Percents img 9

Model Percents – Page No. 273

Write a ratio and a percent to represent the shaded part.

Question 1.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 10
Type below:
_____________

Answer:
31% and \(\frac{31}{100}\)

Explanation:
31 squares are shaded out of 100.
So, 31% and 31/100 are the answers.

Question 2.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 11
Type below:
_____________

Answer:
70% and \(\frac{70}{100}\)

Explanation:
70 squares are shaded out of 100.
So, 70% and 70/100 are the answers.

Question 3.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 12
Type below:
_____________

Answer:
48% and \(\frac{48}{100}\)

Explanation:
48 squares are shaded out of 100.
So, 48% and 48/100 are the answers.

Model the percent and write it as a ratio.

Question 4.
97%
\(\frac{□}{□}\)

Answer:
grade 6 chapter 5 image 5

Explanation:
97% is 97 out of 100
97 out of 100 squares is 97/100
97% = \(\frac{97}{100}\)

Question 5.
24%
\(\frac{□}{□}\)

Answer:
grade 6 chapter 5 image 6

Explanation:
24% is 24 out of 100
24 out of 100 squares is 24/100
24% = \(\frac{24}{100}\)

Question 6.
50%
\(\frac{□}{□}\)

Answer:
grade 6 chapter 5 image 7

Explanation:
50% is 50 out of 100
50 out of 100 squares is 50/100
50% = \(\frac{50}{100}\)

Problem Solving

The table shows the pen colors sold at the school supply store one week. Write the ratio comparing the number of the given color sold to the total number of pens sold. Then shade the grid.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 13

Question 7.
Black
\(\frac{□}{□}\)

Answer:
\(\frac{49}{100}\)
grade 6 chapter 5 image 8

Explanation:
The total number of pens sold = 36 + 49 + 15 = 100
Black : total number of pens sold = 49:100
49 out of 100 squares need to shade the grid

Question 8.
Not Blue
\(\frac{□}{□}\)

Answer:
\(\frac{64}{100}\)
grade 6 chapter 5 image 9

Explanation:
Not Blue = Black + Red = 49 + 15 = 64

Question 9.
Is every percent a ratio? Is every ratio a percent? Explain.
Type below:
_____________

Answer:
Every percent is a ratio but not all ratios are percent. All ratios can be expressed as percents, decimals, or fractions or in ratio form.

Lesson Check – Page No. 274

Question 1.
What percent of the large square is shaded?
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 14
_______ %

Answer:
63%

Explanation:
63 squares are shaded out of 100.
So, 63% and 63/100 are the answers.

Question 2.
Write a ratio to represent the shaded part.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 15
\(\frac{□}{□}\)

Answer:
\(\frac{10}{100}\)

Explanation:
63 squares are shaded out of 100.
63/100 is the answer.

Spiral Review

Question 3.
Write a number that is less than −2 \(\frac{4}{5}\) and greater than −3 \(\frac{1}{5}\).
Type below:
_____________

Answer:
-2.9, -3.0, -3.1

Explanation:
−2 \(\frac{4}{5}\) = -14/5 = -2.8
−3 \(\frac{1}{5}\) = -16/5 = -3.2
-2.9, -3.0, -3.1 are the numbers less than −2 \(\frac{4}{5}\) and greater than −3 \(\frac{1}{5}\)

Question 4.
On a coordinate grid, what is the distance between (2, 4) and (2, –3)?
_______ units

Answer:
7 units

Explanation:
|-3| = 3
4+ 0 = 4; 0 + 3 = 3
4 + 3 = 7

Question 5.
Each week, Diana spends 4 hours playing soccer and 6 hours babysitting. Write a ratio to compare the time Diana spends playing soccer to the time she spends babysitting.
\(\frac{□}{□}\)

Answer:
\(\frac{2}{3}\)

Explanation:
Each week, Diana spends 4 hours playing soccer and 6 hours babysitting.
The ratio to compare the time Diana spends playing soccer to the time she spends babysitting is 4:6 or 4/6 = 2/3

Question 6.
Antwone earns money at a steady rate mowing lawns. The points (1, 25) and (5, 125) appear on a graph of the amount earned versus number of lawns mowed. What are the coordinates of the point on the graph with an x-value of 3?
Type below:
_____________

Answer:
(3, 75)

Explanation:
y2-y1/x2-x1.
Y2 is 125, Y1 is 25, X2 is 5, and X1 is 1.
You then plug the numbers in, 125-25=100. 5-1=4.
Then you divide 100/4, in which you get 25. So you time 25 by 3, getting 75.

Share and Show – Page No. 277

Write the percent as a fraction.

Question 1.
80%
\(\frac{□}{□}\)

Answer:
\(\frac{80}{100}\)

Explanation:
80% is 80 out of 100
80 out of 100 squares is 80/100

Question 2.
150%
______ \(\frac{□}{□}\)

Answer:
1\(\frac{1}{2}\)

Explanation:
150% is 150 out of 100
150 out of 100 squares is 150/100 = 3/2 = 1 1/2

Question 3.
0.2%
\(\frac{□}{□}\)

Answer:
\(\frac{2}{1,000}\)

Explanation:
0.2% is 0.2 out of 100
0.2 out of 100 squares is 0.2/100 = 2/1,000

Write the percent as a decimal.

Question 4.
58%
______

Answer:
0.58

Explanation:
58% is 58 out of 100
58 out of 100 squares is 58/100
58/100 = 0.58

Question 5.
9%
______

Answer:
0.09

Explanation:
9% is 9 out of 100
9 out of 100 squares is 9/100
9/100 = 0.09

On Your Own

Write the percent as a fraction or mixed number.

Question 6.
17%
\(\frac{□}{□}\)

Answer:
\(\frac{17}{100}\)

Explanation:
17% is 17 out of 100
17 out of 100 squares is 17/100

Question 7.
20%
\(\frac{□}{□}\)

Answer:
\(\frac{1}{5}\)

Explanation:
20% is 20 out of 100
20 out of 100 squares is 20/100 = 2/10 = 1/5

Question 8.
125%
______ \(\frac{□}{□}\)

Answer:
1\(\frac{1{4}\)

Explanation:
125% is 125 out of 100
125 out of 100 squares is 125/100 = 1 1/4

Question 9.
355%
______ \(\frac{□}{□}\)

Answer:
3\(\frac{11}{20}\)

Explanation:
355% is 355 out of 100
355 out of 100 squares is 355/100 = 3 11/20

Question 10.
0.1%
\(\frac{□}{□}\)

Answer:
\(\frac{1}{1,000}\)

Explanation:
0.1% is 0.1 out of 100
0.1 out of 100 squares is 0.1/100 = 1/1,000

Question 11.
2.5%
\(\frac{□}{□}\)

Answer:
\(\frac{1}{40}\)

Explanation:
2.5% is 2.5 out of 100
2.5 out of 100 squares is 2.5/100 = 25/1,000 = 1/40

Write the percent as a decimal.

Question 12.
89%
______

Answer:
0.89

Explanation:
89% is 89 out of 100
89 out of 100 squares is 89/100
89/100 = 0.89

Question 13.
30%
______

Answer:
0.3

Explanation:
30% is 30 out of 100
30 out of 100 squares is 30/100
30/100 = 0.3

Question 14.
2%
______

Answer:
0.02

Explanation:
2% is 2 out of 100
2 out of 100 squares is 2/100
2/100 = 0.02

Question 15.
122%
______

Answer:
1.22

Explanation:
122% is 122 out of 100
122 out of 100 squares is 122/100
122/100 = 1.22

Question 16.
3.5%
______

Answer:
0.035

Explanation:
3.5% is 3.5 out of 100
3.5 out of 100 squares is 3.5/100
3.5/100 = 0.035

Write Percents as Fractions and Decimals Lesson 5.2 Answer Key Go Math Question 17.
6.33%
______

Answer:
0.0633

Explanation:
6.33% is 6.33 out of 100
6.33 out of 100 squares is 6.33/100
6.33/100 = 0.0633

Question 18.
Use Reasoning Write <, >, or =.
21.6% ______ \(\frac{1}{5}\)

Answer:
21.6% > \(\frac{1}{5}\)

Explanation:
1/5 × 100/100 = 100/500 = 0.2/100 = 0.2%
21.6% > 0.2%

Question 19.
Georgianne completed 60% of her homework assignment. Write the portion of her homework that she still needs to complete as a fraction.
\(\frac{□}{□}\)

Answer:
\(\frac{2}{5}\)

Explanation:
Georgianne completed 60% of her homework assignment.
60/100
She needs to complete 40% of her homework = 40/100 = 2/5

Problem Solving + Applications – Page No. 278

Use the table for 20 and 21.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 16

Question 20.
What fraction of computer and video game players are 50 years old or more?
\(\frac{□}{□}\)

Answer:
\(\frac{13}{50}\)

Explanation:
computer and video game players,
50 or more are of 26% = 26/100 = 13/50

Question 21.
What fraction of computer and video game players are 18 years old or more?
\(\frac{□}{□}\)

Answer:
\(\frac{49}{100}\)

Explanation:
18 years old or more are of 49% = 49/100

Question 22.
Box A and Box B each contain black tiles and white tiles. They have the same total number of tiles. In Box A, 45% of the tiles are black. In Box B, \(\frac{11}{20}\) of the tiles are white. Compare the number of black tiles in the boxes. Explain your reasoning.
Type below:
_____________

Answer:
In Box A, 45% of the tiles are black.
In Box B, \(\frac{11}{20}\) of the tiles are white.
11/20 = 0.55 = 55/100 = 55%
100 – 55 = 45%
Both Box A and Box B have an equal number of black tiles

Question 23.
Mr. Truong is organizing a summer program for 6th grade students. He surveyed students to find the percent of students interested in each activity. Complete the table by writing each percent as a fraction or decimal.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 17
Type below:
_____________

Answer:
Sports = 48% = 48/100 = 0.48
Cooking = 23% = 23/100
Music = 20% = 20/100
Art = 9% = 9/100 = 0.09

Write Percents as Fractions and Decimals – Page No. 279

Write the percent as a fraction or mixed number.

Question 1.
44%
\(\frac{□}{□}\)

Answer:
\(\frac{11}{25}\)

Explanation:
44% is 44 out of 100
44 out of 100 squares is 44/100 = 11/25

Question 2.
32%
\(\frac{□}{□}\)

Answer:
\(\frac{8}{25}\)

Explanation:
32% is 32 out of 100
32 out of 100 squares is 32/100 = 8/25

Write Percents as Fractions and Decimals Lesson 5.2 Answer Key Question 3.
116%
______ \(\frac{□}{□}\)

Answer:
1 \(\frac{4}{25}\)

Explanation:
116% is 116 out of 100
116 out of 100 squares is 116/100 = 1 4/25

Question 4.
250%
______ \(\frac{□}{□}\)

Answer:
2\(\frac{1}{2}\)

Explanation:
250% is 250 out of 100
250 out of 100 squares is 250/100 = 2 1/2

Question 5.
0.3%
\(\frac{□}{□}\)

Answer:
\(\frac{3}{1,000}\)

Explanation:
0.3% is 0.3 out of 100
0.3 out of 100 squares is 0.3/100
3/1,000

Question 6.
0.4%
\(\frac{□}{□}\)

Answer:
\(\frac{1}{250}\)

Explanation:
0.4% is 0.4 out of 100
0.4 out of 100 squares is 0.4/100 = 4/1,000 = 1/250

Question 7.
1.5%
\(\frac{□}{□}\)

Answer:
\(\frac{3}{200}\)

Explanation:
1.5% is 1.5 out of 100
1.5 out of 100 squares is 1.5/100 = 15/1,000 = 3/200

Question 8.
12.5%
\(\frac{□}{□}\)

Answer:
\(\frac{1}{8}\)

Explanation:
12.5% is 12.5 out of 100
12.5 out of 100 squares is 12.5/100 = 125/1,000 = 25/200 = 5/40 = 1/8

Write the percent as a decimal.

Question 9.
63%
______

Answer:
0.63

Explanation:
63% is 63 out of 100
63 out of 100 squares is 63/100
63/100 = 0.63

Question 10.
110%
______

Answer:
1.1

Explanation:
110% is 110 out of 100
110 out of 100 squares is 110/100 = 1.1

Question 11.
42.15%
______

Answer:
0.4215

Explanation:
42.15% is 42.15 out of 100
42.15 out of 100 squares is 42.15/100 = 0.4215

Question 12.
0.1%
______

Answer:
0.001

Explanation:
0.1% is 0.1 out of 100
0.1 out of 100 squares is 0.1/100  = 0.001

Problem Solving

Question 13.
An online bookstore sells 0.8% of its books to foreign customers. What fraction of the books are sold to foreign customers?
\(\frac{□}{□}\)

Answer:
\(\frac{1}{125}\)

Explanation:
An online bookstore sells 0.8% of its books to foreign customers.
0.8% = 0.8/100 = 8/1,000 = 1/125

Question 14.
In Mr. Klein’s class, 40% of the students are boys. What decimal represents the portion of the students that are girls?
______

Answer:
0.4

Explanation:
In Mr. Klein’s class, 40% of the students are boys.
40/100 = 0.4

Question 15.
Explain how percents, fractions, and decimals are related. Use a 10-by-10 grid to make a model that supports your explanation.
Type below:
_____________

Answer:
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 1
53 squares are shaded out of 100.
53% or \(\frac{53}{100}\) or 0.53

Lesson Check – Page No. 280

Question 1.
The enrollment at Sonya’s school this year is 109% of last year’s enrollment. What decimal represents this year’s enrollment compared to last year’s?
______

Answer:
1.09 represents this year’s enrollment compared to last year’s

Explanation:
The enrollment at Sonya’s school this year is 109% of last year’s enrollment.
109% = 109/100 = 1.09

Question 2.
An artist’s paint set contains 30% watercolors and 25% acrylics. What fraction represents the portion of the paints that are watercolors or acrylics? Write the fraction in simplest form.
\(\frac{□}{□}\)

Answer:
\(\frac{11}{20}\)

Explanation:
An artist’s paint set contains 30% watercolors and 25% acrylics.
30 + 25 = 55% = 55/100 = 11/20

Spiral Review

Question 3.
Write the numbers in order from least to greatest.
-5.25 1.002 -5.09
Type below:
_____________

Answer:
-5.25, -5.09, 1.002

Question 4.
On a coordinate plane, the vertices of a rectangle are (2, 4), (2, −1), (−5, −1), and ( −5, 4). What is the perimeter of the rectangle?
______ units

Answer:
24 units

Explanation:
(2, 4) to (2, −1) is 4 + 1 = 5
(2, −1) to (−5, −1) is 2 + 5 = 7
5 + 7 + 5 + 7 = 24

Question 5.
The table below shows the widths and lengths, in feet, for different playgrounds. Which playgrounds have equivalent ratios of width to length?
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 18
Type below:
_____________

Answer:
12/20 and 16.5/27.5 are equal

Explanation:
12/20 = 0.6
15/22.5 = 0.666
20/25 = 0.8
16.5/27.5 = 0.6

Question 6.
What percent represents the shaded part?
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 19
_______ %

Answer:
85%

Explanation:
85 squares are shaded out of 100.
85%

Share and Show – Page No. 283

Write the fraction or decimal as a percent.

Question 1.
\(\frac{3}{25}\)
_______ %

Answer:
12%

Explanation:
3/25 ÷ 25/25 = 0.12/1 = 12/100 = 12%

Question 2.
\(\frac{3}{10}\)
_______ %

Answer:
30%

Explanation:
3/10 ÷ 10/10 = 0.3 = 0.3 × 100/100 = 30/100 = 30%

Question 3.
0.717
_______ %

Answer:
71.7%

Explanation:
0.717 = 717/100 = 71.7%

Question 4.
0.02
_______ %

Answer:
2%

Explanation:
0.02 = 2/100 = 2%

On Your Own

Write the number in two other forms ( fraction, decimal, or percent). Write the fraction in simplest form.

Question 5.
0.01
Type below:
_____________

Answer:
1% and \(\frac{1}{100}\)

Explanation:
0.01 as a fraction 1/100
0.01 as percent 1%

Question 6.
\(\frac{13}{40}\)
Type below:
_____________

Answer:
0.325 and 32.5%

Explanation:
\(\frac{13}{40}\) as decimal 0.325
\(\frac{13}{40}\) as percent 32.5/100 = 32.5%

Question 7.
\(\frac{6}{5}\)
Type below:
_____________

Answer:
1.2 and 120%

Explanation:
\(\frac{6}{5}\) as decimal 1.2
\(\frac{6}{5}\) as percent 120/100 = 120%

Question 8.
0.08
Type below:
_____________

Answer:
8% and \(\frac{8}{100}\)

Explanation:
0.08 as a fraction 8/100
0.08 as percent 8%

The table shows the portion of Kim’s class that participates in each sport. Use the table for 9–10.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 20

Question 9.
Do more students take part in soccer or in swimming? Explain your reasoning.
Type below:
_____________

Answer:
Soccer = 1/5 = 0.2
Swimming = 0.09
0.2 > 0.09
more students take part in Soccer

Question 10.
Explain What percent of Kim’s class participates in one of the sports listed? Explain how you found your answer
_______ %

Answer:
23%

Explanation:
Kim’s class participates in Baseball which is mentioned at 23%

Write Fractions and Decimals as Percents Lesson 5.3 Answer Key Question 11.
For their reading project, students chose to either complete a character study or write a book review. \(\frac{1}{5}\) of the students completed a character study, and 0.8 of the students wrote a book review. Joia said that more students wrote a book review than completed a character study. Do you agree with Joia? Use numbers and words to support your answer
Type below:
_____________

Answer:
1/5 = 0.2
0.2 < 0.8
More students completed writing a book review.
I agree with Joia

Sand Sculptures – Page No. 284

Every year, dozens of teams compete in the U.S. Open Sandcastle Competition. Recent winners have included complex sculptures in the shape of flowers, elephants, and racing cars.

Teams that participate in the contest build their sculptures using a mixture of sand and water. Finding the correct ratios of these ingredients is essential for creating a stable sculpture.

The table shows the recipes that three teams used. Which team used the greatest percent of sand in their recipe?
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 21
Convert to percents. Then order from least to greatest.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 22
From least to greatest, the percents are 75%, 84%, 95%.
So, Team B used the greatest percent of sand.
Solve.

Question 12.
Which team used the greatest percent of water in their recipe?
Type below:
_____________

Answer:
Team A used the greatest percent of water in their recipe

Explanation:
Team A, 10/10+30 = 10/40 = 0.25 = 25%
Team B, 1/20 × 5/5 = 5/100 = 5%
Team C, 0.16 = 16%

Question 13.
Some people say that the ideal recipe for sand sculptures contains 88.9% sand. Which team’s recipe is closest to the ideal recipe?
Type below:
_____________

Answer:
Team C

Question 14.
Team D used a recipe that consisted of 20 cups of sand, 2 cups of flour, and 3 cups of water. How does the percent of sand in Team D’s recipe compare to that of the other teams?
Type below:
_____________

Answer:
Total number of cups together = 20 + 2+ 3 =25 cups
20/25 × 100 = 80/100 = 80%

Write Fractions and Decimals as Percents – Page No. 285

Write the fraction or decimal as a percent.

Question 1.
\(\frac{7}{20}\)
_______ %

Answer:
35%

Explanation:
7/20 = 0.35 = 35%

Question 2.
\(\frac{3}{50}\)
_______ %

Answer:
6%

Explanation:
3/50 = 0.06 = 6%

Question 3.
\(\frac{1}{25}\)
_______ %

Answer:
4%

Explanation:
1/25 = 0.04 = 4%

Question 4.
\(\frac{5}{5}\)
_______ %

Answer:
0.01%

Explanation:
5/5 = 1 = 0.01%

Question 5.
0.622
_______ %

Answer:
6.22%

Explanation:
0.622 = 6.22/100 = 6.22%

Question 6.
0.303
_______ %

Answer:
3.03%

Explanation:
0.303 = 3.03/100 = 3.03%

Question 7.
0.06
_______ %

Answer:
6%

Explanation:
0.06 = 6/100 = 6%

Question 8.
2.45
_______ %

Answer:
245%

Explanation:
2.45 × 100/100 = 245/100 = 245%

Write the number in two other forms (fraction, decimal, or percent). Write the fraction in simplest form

Question 9.
\(\frac{19}{20}\)
Type below:
_____________

Answer:
0.95 and 95%

Explanation:
\(\frac{19}{20}\) as a decimal 0.95
\(\frac{19}{20}\) as a percentage 95%

Question 10.
\(\frac{9}{16}\)
Type below:
_____________

Answer:
0.5625 and 56.25%

Explanation:
\(\frac{9}{16}\) as a decimal 0.5625
\(\frac{9}{16}\) as a percentage 56.25%

Question 11.
0.4
Type below:
_____________

Answer:
\(\frac{2}{5}\) and 40%

Explanation:
0.4 as a fraction 2/5
0.4 as a percentage 40/100 = 40%

Question 12.
0.22
Type below:
_____________

Answer:
\(\frac{11}{50}\) and 22%

Explanation:
0.22 as a fraction 11/50
0.22 as a percentage 22/100 = 22%

Problem Solving

Question 13.
According to the U.S. Census Bureau, \(\frac{3}{25}\) of all adults in the United States visited a zoo in 2007. What percent of all adults in the United States visited a zoo in 2007?
_______ %

Answer:
12%

Explanation:
According to the U.S. Census Bureau, \(\frac{3}{25}\) of all adults in the United States visited a zoo in 2007.
\(\frac{3}{25}\) = 0.12 = 12%

Question 14.
A bag contains red and blue marbles. Given that \(\frac{17}{20}\) of the marbles are red, what percent of the marbles are blue?
_______ %

Answer:
15%

Explanation:
The total number of marbles = 20
If 17 marbles are red, the remaining 3 marbles out of 20 are blue marbles
3/20 = 0.15 = 15%

Question 15.
Explain two ways to write \(\frac{4}{5}\) as a percent.
Type below:
_____________

Answer:
Decimal =0.8.
Percentage =80%

Explanation:
4/5 = 0.8 = 80/100 = 80%

Lesson Check – Page No. 286

Question 1.
The portion of shoppers at a supermarket who pay by credit card is 0.36. What percent of shoppers at the supermarket do NOT pay by credit card?
_______ %

Answer:
36%

Explanation:
The portion of shoppers at a supermarket who pay by credit card is 0.36.
0.36 = 0.36 × 100/100 = 36/100 = 36%

Question 2.
About \(\frac{23}{40}\) of a lawn is planted with Kentucky bluegrass. What percent of the lawn is planted with Kentucky bluegrass?
_______ %

Answer:
57.5%

Explanation:
About \(\frac{23}{40}\) of a lawn is planted with Kentucky bluegrass.
23/40 = 0.575 = 0.575 × 100/100 = 57.5/100 = 57.5%

Spiral Review

Question 3.
A basket contains 6 peaches and 8 plums. What is the ratio of peaches to total pieces of fruit?
Type below:
_____________

Answer:
6:14

Explanation:
total pieces of fruit 6 + 8 = 14
the ratio of peaches to total pieces of fruit is 6:14

Question 4.
It takes 8 minutes for 3 cars to move through a car wash. At the same rate, how many cars can move through the car wash in 24 minutes?
_______ cars

Answer:
9 cars

Explanation:
It takes 8 minutes for 3 cars to move through a car wash.
3/8 × 24 = 9 cars

Question 5.
A 14-ounce box of cereal sells for $2.10. What is the unit rate?
$ _______ per ounce

Answer:
$0.15 per ounce

Explanation:
$2.10/14 × 14/14 = $0.15 per ounce

Question 6.
A model railroad kit contains curved tracks and straight tracks. Given that 35% of the tracks are curved, what fraction of the tracks are straight? Write the fraction in simplest form.
\(\frac{□}{□}\)

Answer:
\(\frac{7}{20}\)

Explanation:
A model railroad kit contains curved tracks and straight tracks. Given that 35% of the tracks are curved,
35% = 35/100 = 7/20

Vocabulary – Page No. 287

Choose the best term from the box to complete the sentence.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 23

Question 1.
A _____ is a ratio that compares a quantity to 100.
Type below:
_____________

Answer:
percent

Concepts and Skills

Write a ratio and a percent to represent the shaded part.

Question 2.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 24
Type below:
_____________

Answer:
17% and \(\frac{17}{100}\)

Explanation:
17 squares are shaded out of 100.
So, 17% and 17/100 are the answers.

Question 3.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 25
Type below:
_____________

Answer:
60% and \(\frac{60}{100}\)

Explanation:
60 squares are shaded out of 100.
So, 60% and 60/100 are the answers.

Question 4.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 26
Type below:
_____________

Answer:
7% and \(\frac{7}{100}\)

Explanation:
7 squares are shaded out of 100.
So, 7% and 7/100 are the answers.

Question 5.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 27
Type below:
_____________

Answer:
11% and \(\frac{11}{100}\)

Explanation:
11 squares are shaded out of 100.
So, 11% and 11/100 are the answers.

Question 6.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 28
Type below:
_____________

Answer:
82% and \(\frac{82}{100}\)

Explanation:
82 squares are shaded out of 100.
So, 82% and 82/100 are the answers.

Question 7.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 29
Type below:
_____________

Answer:
36% and \(\frac{36}{100}\)

Explanation:
36 squares are shaded out of 100.
So, 36% and 36/100 are the answers.

Write the number in two other forms (fraction, decimal, or percent).

Write the fraction in simplest form.

Question 8.
0.04
Type below:
_____________

Answer:
\(\frac{1}{25}\) and 4%

Explanation:
0.04 as a fraction 4/100 = 1/25
0.04 as a decimal 0.04 × 100/100 = 4/100 = 4%

Question 9.
\(\frac{3}{10}\)
Type below:
_____________

Answer:
0.3 and 30%

Explanation:
\(\frac{3}{10}\) as a decimal 0.3
\(\frac{3}{10}\) as a percentage 0.3 × 100/100 = 30/100 = 30%

Question 10.
1%
Type below:
_____________

Answer:
\(\frac{1}{100}\) and 0.01

Explanation:
1% as a fraction 1/100
1% as a decimal 1/100 = 0.01

Question 11.
1 \(\frac{1}{5}\)
Type below:
_____________

Answer:
1.2 and 120%

Explanation:
1 \(\frac{1}{5}\) as a decimal = 6/5 = 1.2
1 \(\frac{1}{5}\) as a percentage 1.2 × 100/100 = 120/100 = 120%

Question 12.
0.9
Type below:
_____________

Answer:
\(\frac{90}{100}\) and 90%

Explanation:
0.9 as a fraction 0.9 × 100/100 = 90/100 = 90%

Question 13.
0.5%
Type below:
_____________

Answer:
\(\frac{5}{1,000}\) and 0.005

Explanation:
0.5% as a fraction = 0.5/100 = 5/1,000
0.5% as a decimal = 0.5/100 = 0.005

Question 14.
\(\frac{7}{8}\)
Type below:
_____________

Answer:
0.875 and 87.5%

Explanation:
\(\frac{7}{8}\) as a decimal 0.875
\(\frac{7}{8}\) as a percentage 87.5/100 = 87.5%

Question 15.
355%
Type below:
_____________

Answer:
\(\frac{71}{20}\) and 35.5

Explanation:
355% as a decimal 355/100 = 71/20 = 35.5

Page No. 288

Question 16.
About \(\frac{9}{10}\) of the avocados grown in the United States are grown in California. About what percent of the avocados grown in the United States are grown in California?
_______ %

Answer:
90%

Explanation:
About \(\frac{9}{10}\) of the avocados grown in the United States are grown in California.
9/10 × 10/10 = 90/100 = 90%

Question 17.
Morton made 36 out of 48 free throws last season. What percent of his free throws did Morton make?
_______ %

Answer:
75%

Explanation:
Morton made 36 out of 48 free throws last season.
36/48 = 0.75 = 75/100 = 75%

Question 18.
Sarah answered 85% of the trivia questions correctly. What fraction describes this percent?
\(\frac{□}{□}\)

Answer:
\(\frac{17}{20}\)

Explanation:
Sarah answered 85% of the trivia questions correctly.
85% = 85/100 = 17/20

Question 19.
About \(\frac{4}{5}\) of all the orange juice in the world is produced in Brazil. About what percent of all the orange juice in the world is produced in Brazil?
_______ %

Answer:
80%

Explanation:
About \(\frac{4}{5}\) of all the orange juice in the world is produced in Brazil.
4/5 = 0.8 × 100/100 = 80/100 = 80%

Question 20.
If you eat 4 medium strawberries, you get 48% of your daily recommended amount of vitamin C. What fraction of your daily amount of vitamin C do you still need?
\(\frac{□}{□}\)

Answer:
\(\frac{13}{25}\)

Explanation:
If you eat 4 medium strawberries, you get 48% of your daily recommended amount of vitamin C.
48% = 48/100
100 – 48 = 52
52% = 52/100 = 13/25 of your daily amount of vitamin C do you still need

Share and Show – Page No. 290

Find the percent of the quantity.

Question 1.
25% of 320
_______

Answer:
80

Explanation:
Write the percent as a rate per 100
25% = 25/100
25/100 × 320 = 80

Question 2.
80% of 50
_______

Answer:
40

Explanation:
Write the percent as a rate per 100
80% = 80/100
80/100 × 50 = 40

Question 3.
175% of 24
_______

Answer:
42

Explanation:
Write the percent as a rate per 100
175% = 175/100
175/100 × 24 = 42

Question 4.
60% of 210
_______

Answer:
126

Explanation:
Write the percent as a rate per 100
60% = 60/100
60/100 × 210 = 126

Question 5.
A jar contains 125 marbles. Given that 4% of the marbles are green, 60% of the marbles are blue, and the rest are red, how many red marbles are in the jar?
_______ marbles

Answer:
45 marbles

Explanation:
A jar contains 125 marbles.
4% of the marbles are green = 125 × 4/100 = 5
60% of the marbles are blue = 125 × 60/100 = 75
Red Marbles = Total Number of Marbles -[Number of Green Marbles + Number of Blue Marbles]
Red Marbles = 125 – (5 + 75) = 125 – 80 = 45

Question 6.
There are 32 students in Mr. Moreno’s class and 62.5% of the students are girls. How many boys are in the class?
_______ students

Answer:
12 students

Explanation:
There are 32 students in Mr. Moreno’s class
62.5% of the students are girls = 32 × 62.5/100 = 20
boys = 32 – 20 = 12

On Your Own – Page No. 291

Find the percent of the quantity.

Question 7.
60% of 90
_______

Answer:
54

Explanation:
Write the percent as a rate per 100
60% = 60/100
60/100 × 90 = 54

Question 8.
25% of 32.4
_______

Answer:
8.1

Explanation:
Write the percent as a rate per 100
25% = 25/100
25/100 × 32.4 = 8.1

Question 9.
110% of 300
_______

Answer:
330

Explanation:
Write the percent as a rate per 100
110% = 110/100
110/100 × 300 = 330

Question 10.
0.2% of 6500
_______

Answer:
13

Explanation:
Write the percent as a rate per 100
0.2% = 0.2/100
0.2/100 × 6500 = 13

Percent of a Quantity Lesson 5.4 Answer Key Question 11.
A baker made 60 muffins for a cafe. By noon, 45% of the muffins were sold. How many muffins were sold by noon?
_______ muffins

Answer:
27 muffins

Explanation:
A baker made 60 muffins for a cafe. By noon, 45% of the muffins were sold.
60 × 45%
60 × 45/100 = 27

Question 12.
There are 30 treasures hidden in a castle in a video game. LaToya found 80% of them. How many of the treasures did LaToya find?
_______ treasures

Answer:
24 treasures

Explanation:
There are 30 treasures hidden in a castle in a video game.
LaToya found 80% of them.
30 × 80/100 = 24

Question 13.
A school library has 260 DVDs in its collection. Given that 45% of the DVDs are about science and 40% are about history, how many of the DVDs are about other subjects?
_______ DVDs

Answer:
39 DVDs

Explanation:
A school library has 260 DVDs in its collection.
45% of the DVDs are about science = 260 × 45/100 = 117
40% are about history = 260 × 40/100 = 104
other subjects = 260 – (117 + 104) = 260 – 221 = 39

Question 14.
Mitch planted cabbage, squash, and carrots on his 150-acre farm. He planted half the farm with squash and 22% with carrots. How many acres did he plant with cabbage?
_______ acres

Answer:

Explanation:
Mitch planted cabbage, squash, and carrots on his 150-acre farm.
He planted half the farm with squash 150/2 = 75
22% with carrots = 150 × 22/100 = 33
cabbage = 150 – (75 + 33) = 150 – 108 = 42

Question 15.
45% of 60 _______ 60% of 45

Answer:
45% of 60 = 60% of 45

Explanation:
45% of 60
45/100 × 60 = 27
60% of 45
60/100 × 45 = 27
45% of 60 = 60% of 45

Question 16.
10% of 90 _______ 90% of 100

Answer:
10% of 90 _______ 90% of 100

Explanation:
10% of 90
10/100 × 90 = 9
90% of 100
90/100 × 100 = 90
10% of 90 < 90% of 100

Question 17.
75% of 8 _______ 8% of 7.5

Answer:
75% of 8 > 8% of 7.5

Explanation:
75% of 8
75/100 × 8 = 6
8% of 7.5
8/100 × 7.5 = 0.6
75% of 8 > 8% of 7.5

Question 18.
Sarah had 12 free throw attempts during a game and made at least 75% of the free throws. What is the greatest number of free throws Sarah could have missed during the game?
_______ free throws

Answer:
3 free throws

Explanation:
Sarah had 12 free throw attempts during a game and made at least 75% of the free throws.
So, she missed 25% of the free throws.
12 × 25/100 = 3

Question 19.
Chrissie likes to tip a server in a restaurant a minimum of 20%. She and her friend have a lunch bill that is $18.34. Chrissie says the tip will be $3.30. Her friend says that is not a minimum of 20%. Who is correct? Explain.
Type below:
_____________

Answer:
100% = $18.34
10% = $18.34 / 10 = 1.834
20% = 1.834 × 2 = 3.66800 = $3.70
Her friend is correct because $3.70 is more than $3.30.

Unlock The Problem – Page No. 292

Question 20.
One-third of the juniors in the Linwood High School Marching Band play the trumpet. The band has 50 members and the table shows what percent of the band members are freshmen, sophomores, juniors, and seniors. How many juniors play the trumpet?
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 30
a. What do you need to find?
Type below:
_____________

Answer:
The percent of band members are freshmen, sophomores, juniors, and seniors. How many juniors play the trumpet

Question 20.
b. How can you use the table to help you solve the problem?
Type below:
_____________

Answer:
percent of the band members that are Juniors: 24%
In 50 members of the band, 50×24/100 = 12 are Juniors. One-third of them play the trumpet, which makes 12×(1/3) = 4 members.

Question 20.
c. What operation can you use to find the number of juniors in the band?
Type below:
_____________

Answer:
percent of the band members that are Juniors: 24%
In 50 members of the band, 50×24/100 = 12 are Juniors.

Explanation:

Question 20.
d. Show the steps you use to solve the problem.
Type below:
_____________

Answer:
percent of the band members that are Juniors: 24%
Of 50 members of the band, 50×24/100 = 12 are Juniors. One-third of them play the trumpet, which makes 12×(1/3) = 4 members.

Question 20.
e. Complete the sentences.
The band has _____ members. There are _____ juniors in the band. The number of juniors who play the trumpet is _____.
Type below:
_____________

Answer:
The band has 50 members. There are 12 juniors in the band. The number of juniors who play the trumpet is 4.

Question 21.
Compare. Circle <, >, or =.
a. 25% of 44 Ο 20% of 50
b. 10% of 30 Ο 30% of 100
c. 35% of 60 Ο 60% of 35
25% of 44 _____ 20% of 50
10% of 30 _____ 30% of 100
35% of 60 _____ 60% of 35

Answer:
25% of 44 >  20% of 50
10% of 30 < 30% of 100
35% of 60 = 60% of 35

Explanation:
25% of 44 = 25/100 × 44 = 11
20% of 50 = 20/100 × 50 = 1000/100 = 10
25% of 44  > 20% of 50
10% of 30 = 10/100 × 30 = 3
30% of 100 = 30/100 × 100 = 30
10% of 30 < 30% of 100
35% of 60 = 35/100 × 60 = 21
60% of 35 = 60/100 × 35 = 21
35% of 60 = 60% of 35

Percent of a Quantity – Page No. 293

Find the percent of the quantity.

Question 1.
60% of 140
_____

Answer:
84

Explanation:
60% of 140
60/100 × 140 = 84

Question 2.
55% of 600
_____

Answer:
330

Explanation:
55% of 600
55/100 × 600 = 330

Question 3.
4% of 50
_____

Answer:
2

Explanation:
4% of 50
4/100 × 50 = 2

Question 4.
10% of 2,350
_____

Answer:
235

Explanation:
10% of 2,350
10/100 × 2,350 = 235

Question 5.
160% of 30
_____

Answer:
48

Explanation:
160% of 30
160/100 × 30 = 48

Question 6.
105% of 260
_____

Answer:
273

Explanation:
105% of 260
105/100 × 260 = 273

Question 7.
0.5% of 12
_____

Answer:
0.06

Explanation:
0.5% of 12
0.5/100 × 12 = 0.06

Question 8.
40% of 16.5
_____

Answer:
6.6

Explanation:
40% of 16.5
40/100 × 16.5 =  6.6

Problem Solving

Question 9.
The recommended daily amount of vitamin C for children 9 to 13 years old is 45 mg. A serving of a juice drink contains 60% of the recommended amount. How much vitamin C does the juice drink contain?
_____ mg

Answer:
27 mg

Explanation:
The recommended daily amount of vitamin C for children 9 to 13 years old is 45 mg. A serving of a juice drink contains 60% of the recommended amount.
45% of 60 = 45/100 × 60 = 27

Question 10.
During a 60-minute television program, 25% of the time is used for commercials and 5% of the time is used for the opening and closing credits. How many minutes remain for the program itself?
_____ minutes

Answer:
42 minutes

Explanation:
60 minutes of tv
25% + 5% = 30%
30%= 0.30
60 times 0.30= 18
60-18=42
inly 42 minutes are used for the program itself

Question 11.
Explain two ways you can find 35% of 700.
Type below:
_____________

Answer:
First way
700 : 100 = x : 35
x = 700 × 35 : 100
x = 245
Second way
700 : 100 × 35 =
245

Lesson Check – Page No. 294

Question 1.
A store has a display case with cherry, peach, and grapefruit chews. There are 160 fruit chews in the display case. Given that 25% of the fruit chews are cherry and 40% are peach, how many grapefruit chews are in the display case?
_____ grapefruit chews

Answer:
56 grapefruit chews

Explanation:
A store has a display case with cherry, peach, and grapefruit chews. There are 160 fruit chews in the display case. Given that, 25% of the fruit chews are cherry and 40% are peach,
25% + 40% +?% = 100%
65% + ?% = 100%
?% = 35%
.35×160 = 56

Question 2.
Kelly has a ribbon that is 60 inches long. She cuts 40% off the ribbon for an art project. While working on the project, she decided she only needed 75% of the piece she cut off. How many inches of ribbon does Kelly end up using for her project?
_____ inches

Answer:
18 inches

Explanation:
Length of ribbon = 60 inches
Part of ribbon cut off for an art project = 40%
So, the Length of the ribbon remains is given by
40% of 60 = 40/100 × 60 = 24
Part of a piece she only needs from cut off = 75%
so, the Length of ribbon she need end up using in her project is given by
75/100 × 24 = 18

Spiral Review

Question 3.
Three of the following statements are true. Which one is NOT true?
|−12| > 1      |0| > −4      |20| > |−10|        6 < |−3|
Type below:
_____________

Answer:
|−12| > 1
12 > 1; True
|0| > −4
0 > -4; True
|20| > |−10|
20 > 10; True
6 < |−3|
6 < 3; False

Question 4.
Miyuki can type 135 words in 3 minutes. How many words can she expect to type in 8 minutes?
_____ words

Answer:
360 words

Explanation:
Miyuki can type 135 words in 3 minutes.
135/3 = 45
45 × 8 = 360

Question 5.
Which percent represents the model?
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 31
_____ %

Answer:
63%

Explanation:
63 squares are shaded out of 100
63%

Question 6.
About \(\frac{3}{5}\) of the students at Roosevelt Elementary School live within one mile of the school. What percent of students live within one mile of the school?
_____ %

Answer:
60%

Explanation:
About \(\frac{3}{5}\) of the students at Roosevelt Elementary School live within one mile of the school.
3/5 × 100/100 = 60/100 = 60%

Share and Show – Page No. 297

Question 1.
A geologist visits 40 volcanoes in Alaska and California. 15% of the volcanoes are in California. How many volcanoes does the geologist visit in California and how many in Alaska?
Type below:
_____________

Answer:
40 volcanoes = 100% of them
100 – 15% = 85%
Number of volcanoes in California = 15% of 40 volcanoes = 0.15 x 40 = 6
Number of volcanoes in Alaska = 85% of 40 volcanoes 0.85 x 40 = 34

Question 2.
What if 30% of the volcanoes were in California? How many volcanoes would the geologist have visited in California and how many in Alaska?
Type below:
_____________

Answer:
Number of volcanoes in California = 30% of 40 = 30/100 x 40 = 12
Number of volcanoes in Alaska = 70% of 40 = 70/100 x 40 = 28

Question 3.
Ricardo has $25 to spend on school supplies. He spends 72% of the money on a backpack and the rest on a large binder. How much does he spend on the backpack? How much does he spend on the binder?
Type below:
_____________

Answer:
$18 on Backpack $7 on binder.
If you turn the percent into a decimal .72 and multiply .72 by 25 you get 18 which is the cost of the backpack.
subtract 18 from 25 and you get $7 left meaning the binder was $7

Question 4.
Kevin is hiking on a trail that is 4.2 miles long. So far, he has hiked 80% of the total distance. How many more miles does Kevin have to hike in order to complete the trail?
Type below:
_____________

Answer:
0.84 miles

Explanation:
Kevin is hiking on a trail that is 4.2 miles long. So far, he has hiked 80% of the total distance.
80% of 4.2 = 80/100 x 4.2 = 3.36
4.2 – 3.36 = 0.84 miles

On Your Own – Page No. 298

Question 5.
Jordan takes 50% of the cherries from a bowl. Then Mei takes 50% of the remaining cherries. Finally, Greg takes 50% of the remaining cherries. There are 3 cherries left. How many cherries were in the bowl before Jordan arrived?
_____ cherries

Answer:
24 cherries

Explanation:
Let total cherries in a bowl=x
Jordan takes cherries=50% of x = 50x/100
Remaining cherries = x – 50x/100 = x/2
Mei takes cherries=50% of 50x/100 = x/4
remaining cherries= x/2 – x/4 = x/4
Greg takes cherries=50% of x/4 = x/8
remaining cherries = x/4 – x/8 = x/8
Now, remaining cherries in a bowl = 3
x/8 =3
x = 8 × 3 = 24

Question 6.
Each week, Tasha saves 65% of the money she earns babysitting and spends the rest. This week she earned $40. How much more money did she save than spend this week?
$ _____

Answer:
Tasha saved $26 and spent $14

Explanation:
Since 65% of 40 is 26, that’s how much Tasha saves. Then do 40 – 26 to get 14, which is how much she spends.
So Tasha saved $26 and spent $14.

Lesson 5 Practice Problems Answer Key Grade 6 Question 7.
An employee at a state park has 53 photos of animals found at the park. She wants to arrange the photos in rows so that every row except the bottom row has the same number of photos. She also wants there to be at least 5 rows. Describe two different ways she can arrange the photos
Type below:
_____________

Answer:
5 rows of 10 photos and the last row with 3 photos,
6 rows of 8 photos and the last row with 5 photos,
7 rows of 7 photos and the last row with 4 photos,
Also, reverse the rows and photos in each row (ex 5 rows 10 photos=10 rows 5 photos) to get another 3 sets.

Question 8.
Explain a Method Maya wants to mark a length of 7 inches on a sheet of paper, but she does not have a ruler. She has pieces of wood that are 4 inches, 5 inches, and 6 inches long. Explain how she can use these pieces to mark a length of 7 inches.
Type below:
_____________

Answer:
Maya can put the 5 and 6-inch pieces together to get 11 inches. She can then subtract the length of the 4-inch piece to get 7 inches.

Question 9.
Pierre’s family is driving 380 miles from San Francisco to Los Angeles. On the first day, they drive 30% of the distance. On the second day, they drive 50% of the distance. On the third day, they drive the remaining distance and arrive in Los Angeles. How many miles did Pierre’s family drive each day? Write the number of miles in the correct box.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 32
Type below:
_____________

Answer:
76 miles

Explanation:
Pierre’s family is driving 380 miles from San Francisco to Los Angeles.
On the first day, they drive 30% of the distance. 380 × 30/100 = 114
On the second day, they drive 50% of the distance. 380 × 50/100 = 190
They traveled 80%.
On the third day, they drive the remaining distance and arrive in Los Angeles.
380 × 20/100 = 76 miles

Problem Solving Percents – Page No. 299

Read each problem and solve.

Question 1.
On Saturday, a souvenir shop had 125 customers. Sixty-four percent of the customers paid with a credit card. The other customers paid with cash. How many customers paid with cash?T
_____ costumers

Answer:
45 costumers

Explanation:
On Saturday, a souvenir shop had 125 customers. Sixty-four percent of the customers paid with a credit card.
125 × 64/100 = 80
100 – 64 = 36
125 × 36/100 = 45

Question 2.
A carpenter has a wooden stick that is 84 centimeters long. She cuts off 25% from the end of the stick. Then she cuts the remaining stick into 6 equal pieces. What is the length of each piece?
_____ cm

Answer:
10 1/2 cm

Explanation:
A carpenter has a wooden stick that is 84 centimeters long. She cuts off 25% from the end of the stick. Then she cuts the remaining stick into 6 equal pieces.
84 × 75/100 = 63
63/6 = 10 1/2

Question 3.
A car dealership has 240 cars in the parking lot and 17.5% of them are red. Of the other 6 colors in the lot, each color has the same number of cars. If one of the colors is black, how many black cars are in the lot?
_____ black cars

Answer:
33 black cars

Explanation:
number of red cars 17.5% × 240 = 42
number of cars of other colors = 240 – 42 = 198
number of black cars 1/6 × 198 = 33

Question 4.
The utilities bill for the Millers’ home in April was $132. Forty-two percent of the bill was for gas, and the rest was for electricity. How much did the Millers pay for gas, and how much did they pay for electricity?
Type below:
_____________

Answer:
Amount of money paid for gas = 132 * (42/100) dollars
= 5544/100 dollars
= 55.44 dollars
Then
The amount of money paid for electricity = (132 – 55.44) dollars
= 76.56 dollars
So the Millers paid 55.44 dollars for gas and 76.56 dollars for electricity in the month of April.

Question 5.
Andy’s total bill for lunch is $20. The cost of the drink is 15% of the total bill and the rest is the cost of the food. What percent of the total bill did Andy’s food cost? What was the cost of his food?
Type below:
_____________

Answer:
$17

Explanation:
Andy paid $20 total for his lunch (100%).
15% is for drink.
Therefore, 100 – 15 = 85% is the percent that was constituted by the food.
85% of 20 is equal to 0.85 × 20 is equal to:
17 × 20/20 = 17
Andy’s food cost $17.

Question 6.
Write a word problem that involves finding the additional amount of money needed to purchase an item, given the cost and the percent of the cost already saved.
Type below:
_____________

Answer:
Each week, Tasha saves 65% of the money she earns babysitting and spends the rest. This week she earned $40. How much more money did she save than spend this week?
Tasha saved $26 and spent $14

Lesson Check – Page No. 300

Question 1.
Milo has a collection of DVDs. Out of 45 DVDs, 40% are comedies and the remaining are action-adventures. How many actionadventure DVDs does Milo own?
_____ DVDs

Answer:
27 DVDs

Explanation:
100%-40%=60%
60/100*45=27
27 DVD’s are action-adventure

Question 2.
Andrea and her partner are writing a 12-page science report. They completed 25% of the report in class and 50% of the remaining pages after school. How many pages do Andrea and her partner still have to write?
_____ pages

Answer:
9 pages

Explanation:
first 50% + 25% = 75%
then you can do 75% of 12
75% = 0.75
of = multiplication
0.75 • 12 which should equal 9
so they have 9 pages left

Spiral Review

Question 3.
What is the absolute value of \(\frac{-4}{25}\)?
\(\frac{□}{□}\)

Answer:
\(\frac{4}{25}\)

Explanation:
|\(\frac{-4}{25}\)| = 4/25

Question 4.
Ricardo graphed a point by starting at the origin and moving 5 units to the left. Then he moved up 2 units. What is the ordered pair for the point he graphed?
Type below:
_____________

Answer:
(-5, 2)

Explanation:
In a coordinate system, the coordinates of the origin are (0, 0).
If he moves 5 units to the left, he is moving in the negative direction along the x-axis, and x takes the value -5.
If he moves up 2 units, he is moving in the positive direction along the y-axis, and y takes the value 2.
The ordered pair (x, y) is (-5, 2).

Question 5.
The population of birds in a sanctuary increases at a steady rate. The graph of the population over time has the points (1, 105) and (3, 315). Name another point on the graph.
Type below:
_____________

Answer:
You could do (2, 210) or (4, 420) or (5, 525)

Question 6.
Alicia’s MP3 player contains 1,260 songs. Given that 35% of the songs are rock songs and 20% of the songs are rap songs, how many of the songs are other types of songs?
_____ songs

Answer:
567 songs

Explanation:
Since 55% of the songs are rock and rap, 45% of the songs are other.
To find 45% of 1260 we multiply by the decimal:
1260 x 0.45 = 567
Therefore 567 of the songs are other.

Share and Show – Page No. 303

Find the unknown value.

Question 1.
9 is 25% of _____.
_____

Answer:
36

Explanation:
25/100 ÷ 25/25 = 1/4
1/4 = 9/s
1/4 × 9/9 = 9/36
the unknown value is 36

Question 2.
14 is 10% of _____.
_____

Answer:
140

Explanation:
10/100 ÷ 10/10 = 1/10
1/10 = 14/s
1/10 × 14/14 = 14/140
the unknown value is 140

Question 3.
3 is 5% of _____.
_____

Answer:
6

Explanation:
5/10 ÷ 5/5 = 1/2
1/2 × 3/3 = 3/6
the unknown value is 6

Question 4.
12 is 60% of _____.
_____

Answer:
20

Explanation:
60/100 ÷ 60/60 = 60/100
60/100 ÷ 5/5 = 12/20
the unknown value is 20

On Your Own

Find the unknown value.

Question 5.
16 is 20% of _____.
_____

Answer:
80

Explanation:
20/100 ÷ 20/20 = 1/5
1/5 × 16/16 = 16/80
the unknown value is 80

Question 6.
42 is 50% of _____.
_____

Answer:
84

Explanation:
50/100 ÷ 50/50 = 1/2
1/2 × 42/42 = 42/84
the unknown value is 84

Question 7.
28 is 40% of _____.
_____

Answer:
70

Explanation:
40/100 ÷ 40/40 = 1/2.5
1/2.5 × 28/28 = 28/70
the unknown value is 70

Question 8.
60 is 75% of _____.
_____

Answer:
80

Explanation:
75/100 ÷ 75/75 = 60/s
60 × 100 = 6000/75 = 80
the unknown value is 80

Question 9.
27 is 30% of _____.
_____

Answer:
90

Explanation:
30/100 ÷ 30/30 = 3/10
3/10 × 9/9 = 27/90
the unknown value is 90

Question 10.
21 is 60% of _____.
_____

Answer:
35

Explanation:
60/100 ÷ 60/60 = 3/5
3/5 × 7/7 = 21/35
the unknown value is 35

Question 11.
12 is 15% of _____.
_____

Answer:
80

Explanation:
15/100 ÷ 15/15 = 3/20
3/20 × 4/4 = 12/80
the unknown value is 80

Solve.

Question 12.
40% of the students in the sixth grade at Andrew’s school participate in sports. If 52 students participate in sports, how many sixth graders are there at Andrew’s school?
_____ students

Answer:
130 students

Explanation:
52/s = 40%
52/s = 40/100
s = 40/100 × 52 = 130

Question 13.
There were 136 students and 34 adults at the concert. If 85% of the seats were filled, how many seats are in the auditorium?
_____ seats

Answer:
80 seats

Explanation:
There are 170 seats filled total. 170 is 85% of 200. There are 200 seats in the auditorium.
If you were to solve for x in the equation 40% = 32/x, you would get x = 80.

Use Reasoning Algebra Find the unknown value.

Question 14.
40% = \(\frac{32}{?}\)
_____

Answer:
80

Explanation:
40/100 = 32/?
40/100 ÷ 40/40 = 2/5
2/5 × 16/16 = 32/80
the unknown value is 80

Question 15.
65% = \(\frac{91}{?}\)
_____

Answer:
140

Explanation:
65/100 = 91/?
65/100 ÷ 65/65 = 13/20
13/20 × 7/7 = 91/140
the unknown value is 140

Question 16.
45% = \(\frac{54}{?}\)
_____

Answer:
120

Explanation:
45/100 ÷ 45/45 = 9/20
9/20 × 6/6 = 54/120

Problem Solving + Applications – Page No. 304

Use the advertisement for 17 and 18.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 33

Question 17.
Corey spent 20% of his savings on a printer at Louie’s Electronics. How much did Corey have in his savings account before he bought the printer?
$ _____

Answer:
$800

Explanation:
(printer cost) = 0.20 * (savings)
(printer cost)/0.20 = (savings)
savings = 5*(printer cost)
Corey’s savings was 5 times that amount.
savings = 5 × 160 = 800

Question 18.
Kai spent 90% of his money on a laptop that cost $423. Does he have enough money left to buy a scanner? Explain.
Type below:
_____________

Answer:
$42.3

Explanation:
He spent 90% of his money. So, he left 10% of money with him.
423 × 10/100 = 42.3 left to buy a scanner

Question 19.
Maurice has completed 17 pages of the research paper he is writing. That is 85% of the required length of the paper. What is the required length of the paper?
_____ pages

Answer:
20 pages

Explanation:
Maurice has completed 17 pages of the research paper he is writing. That is 85% of the required length of the paper.
85%=17 ? what about 100%
100multiplied by 17 divided by 85% =20

Question 20.
Of 250 seventh-grade students, 175 walk to school. What percent of seventh-graders do not walk to school?
_____ %

Answer:
30%

Explanation:
it’s either 30 percent or 70. 70 percent walks to school and 30 percent DO NOT walk to school

Question 21.
What’s the Error? Kate has made 20 free throws in basketball games this year. That is 80% of the free throws she has attempted. To find the total number of free throws she attempted, Kate wrote the equation \(\frac{80}{100}=\frac{?}{20}\). What error did Kate make?
Type below:
_____________

Answer:
20 free throws is 80% of the total attempted
80% to decimal is:
80/100 = 0.8
If total attempted is x, we can say:
20 is 80% (0.8) of x
We can now write an algebraic equation:
20 = 0.8x
We simply solve this for x, that is the number of free throws she attempted:
20 = 0.8x
x = 20/0.8 = 25

Question 22.
Maria spent 36% of her savings to buy a smart phone. The phone cost $90. How much money was in Maria’s savings account before she purchased the phone? Find the unknown value.
$ _____

Answer:
$ 250

Explanation:
let her savings be A
A/Q-
36% of A = $90
36/100 of A = $90
A = 90×100/36
A= $ 250

Find the Whole from a Percent – Page No. 305

Find the Whole from a Percent

Question 1.
9 is 15% of _____.
_____

Answer:
60

Explanation:
15/100 ÷ 15/15 = 3/20
3/20 × 3/3 = 9/60
the unknown value is 60

Question 2.
54 is 75% of _____.
_____

Answer:
72

Explanation:
75/100 ÷ 75/75 = 3/4
3/4 × 18/18 = 54/72
the unknown value is 72

Question 3.
12 is 2% of _____.
_____

Answer:
600

Explanation:
2/100 = 1/50
1/50 × 12/12 = 12/600
the unknown value is 600

Question 4.
18 is 50% of _____.

Answer:
36

Explanation:
50/100 = 1/2
1/2 × 18/18 = 18/36
the unknown value is 36

Question 5.
16 is 40% of _____.
_____

Answer:
40

Explanation:
40/100 = 2/5
2/5 × 8/8 = 16/40
the unknown value is 40

Question 6.
56 is 28% of _____.
_____

Answer:
200

Explanation:
28/100 = 14/50 = 7/25
7/25 × 8/8 = 56/200
the unknown value is 200

Question 7.
5 is 10% of _____.
_____

Answer:
50

Explanation:
10/100 = 1/10
1/10 × 5/5 = 5/50
the unknown value is 50

Question 8.
24 is 16% of _____.
_____

Answer:
150

Explanation:
16/100 = 4/25
4/25 × 6/6 = 24/150
the unknown value is 150

Question 9.
15 is 25% of _____.
_____

Answer:
60

Explanation:
25/100 = 1/4
1/4 × 15/15 = 15/60
the unknown value is 60

Problem Solving

Question 10.
Michaela is hiking on a weekend camping trip. She has walked 6 miles so far. This is 30% of the total distance. What is the total number of miles she will walk?
_____ miles

Answer:
20 miles

Explanation:
Since 6mi=30%,
You should find ten percent.
This is how, divide both sides by 3, and this gives you
2m=10% (2m being 2 miles)
So, to find 100%, you need to multiply both sides by 10
20m=100%
So now, Michaela will walk 20 miles this weekend

Question 11.
A customer placed an order with a bakery for muffins. The baker has completed 37.5% of the order after baking 81 muffins. How many muffins did the customer order?
_____ muffins

Answer:
216 muffins

Explanation:
A customer placed an order with a bakery for muffins. The baker has completed 37.5% of the order after baking 81 muffins.
37.5/100=0.375 and 81/0.375=216
so the answer is 216

Question 12.
Write a question that involves finding what number is 25% of another number. Solve using a double number line and check using equivalent ratios. Compare the methods.
Type below:
_____________

Answer:
25% of 15 = 25/100 × 15 = 375/100 = 3.75

Lesson Check – Page No. 306

Question 1.
Kareem saves his coins in a jar. 30% of the coins are pennies. If there are 24 pennies in the jar, how many coins does Kareem have?
_____ coins

Answer:
80 coins

Explanation:
24=30%
find 100%
24=30%
diivde by 3
8=10%
multiply 10
80=100%
80 coins

Question 2.
A guitar shop has 19 acoustic guitars on display. This is 19% of the total number of guitars. What is the total number of guitars the shop has?
_____ guitars

Answer:
100 guitars

Explanation:
Let’s find out how much 1% is worth first.
19 guitars = 19%
therefore 19 ÷ 19 = [ 1 guitar = 1% ]
The total number of guitars is going to be 100%,
so if 1% × 100 = 100%, then 1 guitar × 100 = 100 guitars total.

Spiral Review

Question 3.
On a coordinate grid, in which quadrant is the point (−5, 4) located?
Type below:
_____________

Answer:
Quadrant II

Explanation:
(-5, 4)
-5 is the negative point of the x coordinate
4 is the positive point of the y coordinate
Quadrant II

Question 4.
A box contains 16 cherry fruit chews, 15 peach fruit chews, and 12 plum fruit chews. Which two flavors are in the ratio 5 to 4?
Type below:
_____________

Answer:
peach fruit chews and plum fruit chews are in the ratio 5 to 4

Explanation:
15 peach fruit chews, and 12 plum fruit chews
15/12 = 5/4

Question 5.
During basketball season, Marisol made \(\frac{19}{25}\) of her free throws. What percent of her free throws did Marisol make?
_____ %

Answer:
76%

Explanation:
During the basketball season, Marisol made \(\frac{19}{25}\) of her free throws.
(19 ÷ 25) × 100 = 76%. Marisol made 76% of her free throws.

Question 6.
Landon is entering the science fair. He has a budget of $115. He has spent 20% of the money on new materials. How much does Landon have left to spend?
$ _____

Answer:
$92

Explanation:
Landon has $92 left because if you divide 115/.20 you get 23 and then you subtract 115-23=92 or $92.

Chapter 5 Review/Test – Page No. 307

Question 1.
What percent is represented by the shaded part?
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 34
Options:
a. 46%
b. 60%
c. 64%
d. 640%

Answer:
c. 64%

Explanation:
64 squares are shaded out of 100.
So, 64% and 64/100 are the answers.

Question 2.
Write a percent to represent the shaded part.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 35
_____ %

Answer:
42%

Explanation:
42 squares are shaded out of 100.
So, 42% and 42/100 are the answers.

Question 3.
Rosa made a mosaic wall mural using 42 black tiles, 35 blue tiles and 23 red tiles. Write a percent to represent the number of red tiles in the mural.
_____ %

Answer:
23%

Explanation:
42+35+23= 100
So plug it in.
23/100
23%
Your answer is 23%.

Question 4.
Model 39%.
Type below:
_____________

Answer:
grade 6 chapter 5 image 10

Explanation:
39 squares out of 100 need to shaded

Page No. 308

Question 5.
For 5a–5d, choose Yes or No to indicate whether the percent and the fraction represent the same amount.
5a. 50% and \(\frac{1}{2}\)
5b. 45% and \(\frac{4}{5}\)
5c. \(\frac{3}{8}\) and 37.5%
5d. \(\frac{2}{10}\) and 210%
5a. _____________
5b. _____________
5c. _____________
5d. _____________

Answer:
5a. Yes
5b. No
5c. Yes
5d. No

Explanation:
1/2 = 0.5 × 100/100 = 50/100 = 50%
4/5 = 0.8 × 100/100 = 80/100 = 80%
3/8 = 0.375 × 100/100 = 37.5/100 = 37.5%
2/10 = 0.2 × 100/100 = 20/100 = 20%

Question 6.
The school orchestra has 25 woodwind instruments, 15 percussion instruments, 30 string instruments, and 30 brass instruments. Select the portion of the instruments that are percussion. Mark all that apply.
Options:
a. 15%
b. 1.5
c. \(\frac{3}{20}\)
d. 0.15

Answer:
a. 15%
c. \(\frac{3}{20}\)
d. 0.15

Explanation:
25 + 15 + 30 + 30 = 100
15 percussion instruments = 15/100 = 15% = 0.15

Question 7.
For a science project, \(\frac{3}{4}\) of the students chose to make a poster and 0.25 of the students wrote a report. Rosa said that more students made a poster than wrote a report. Do you agree with Rosa? Use numbers and words to support your answer
Type below:
_____________

Answer:
Yes, because 3/4 is equal to 0.75 and 0.75 > 0.25
Or 0.25 is equal to 1/4, and 1/4 < 3/4

Question 8.
Select other ways to write 0.875. Mark all that apply.
Options:
a. 875%
b. 87.5%
c. \(\frac{7}{8}\)
d. \(\frac{875}{100}\)

Answer:
c. \(\frac{7}{8}\)

Explanation:
0.875 = 8.75/100 = 8.75%

Page No. 309

Question 9.
There are 88 marbles in a bin and 25% of the marbles are red.
There are _____________ red marbles in the bin.

Answer:
There are 22 red marbles in the bin.

Explanation:
88 × 25% = 88 × 25/100 = 22

Question 10.
Harrison has 30 CDs in his music collection. If 40% of the CDs are country music and 30% are pop music, how many CDs are other types of music?
_____ CDs

Answer:
9 CDs

Explanation:
Harrison has 30 CDs in his music collection. If 40% of the CDs are country music and 30% are pop music,
40 + 30 = 70
100 – 70 = 30%
30 × 30/100 = 9

Question 11.
For numbers 11a–11b, choose <, >, or =.
11a. 30% of 90 Ο 35% of 80
11b. 25% of 16 Ο 20% of 25
30% of 90 _____ 35% of 80
25% of 16 _____ 20% of 25

Answer:
30% of 90 < 35% of 80
25% of 16 < 20% of 25

Explanation:
30% of 90 = 30/100 × 90 = 27
35% of 80 = 35/100 × 80 = 28
30% of 90 < 35% of 80
25% of 16 = 25/100 × 16 = 4
20% of 25 = 20/100 × 25 = 5
25% of 16 < 20% of 25

Question 12.
There were 200 people who voted at the town council meeting. Of these people, 40% voted for building a new basketball court in the park. How many people voted against building the new basketball court? Use numbers and words to explain your answer.
Type below:
_____________

Answer:
There were 200 people who voted at the town council meeting. Of these people, 40% voted for building a new basketball court in the park.
100 – 40% = 60%
200 × 60/100 = 120 people

Page No. 310

Question 13.
James and Sarah went out to lunch. The price of lunch for both of them was $20. They tipped their server 20% of that amount. How much did each person pay if they shared the price of lunch and the tip equally?
$ _____

Answer:
$12

Explanation:
James and Sarah went out to lunch. The price of lunch for both of them was $20. They tipped their server 20% of that amount.
20% of 20 = 20/100 × 20 = 4
20 + 4 = 24
24/2 = 12
$12

Question 14.
A sandwich shop has 30 stores and 60% of the stores are in California. The rest of the stores are in Nevada.
Part A
How many stores are in California and how many are in Nevada?
Type below:
_____________

Answer:
30 × 60/100 = 18 stores in California
30 – 18 = 12 stores in Nevada

Question 14.
Part B
The shop opens 10 new stores. Some are in California, and some are in Nevada. Complete the table.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 36
Type below:
_____________

Answer:
grade 6 chapter 5 image 11

Explanation:
100 – 45 = 55%
55% of 40 = 55/100 × 40 = 22
45% of 40 = 45/100 × 40 = 18

Question 15.
Juanita has saved 35% of the money that she needs to buy a new bicycle. If she has saved $63, how much money does the bicycle cost? Use numbers and words to explain your answer
$ _____

Answer:
$180

Explanation:
Juanita has saved 35% of the money that she needs to buy a new bicycle. If she has saved $63,
35/100 = 7/20
7/20 × 9/9 = 63/180
The bicycle cost is $180

Page No. 311

Question 16.
For 16a–16d, choose Yes or No to indicate whether the statement is correct.
16a. 12 is 20% of 60.
16b. 24 is 50% of 48.
16c. 14 is 75% of 20.
16d. 9 is 30% of 30.
16a. _____________
16b. _____________
16c. _____________
16d. _____________

Answer:
16a. Yes
16b. Yes
16c. No
16d. Yes

Explanation:
20% of 60 = 20/100 × 60 = 12
50% of 48 = 50/100 × 48 = 24
75% of 20 = 75/100 × 20 = 15
30% of 30 = 30/100 × 30 = 9

Question 17.
Heather and her family are going to the grand opening of a new amusement park. There is a special price on tickets this weekend. Tickets cost $56 each. This is 70% of the cost of a regular price ticket
Part A
What is the cost of a regular price ticket? Show your work.
$ _____

Answer:
$80

Explanation:
70/100 = 56/s
s = 56 × 100/70 = 80

Question 17.
Part B
Heather’s mom says that they would save more than $100 if they buy 4 tickets for their family on opening weekend. Do you agree or disagree with Heather’s mom? Use numbers and words to support your answer. If her statement is incorrect, explain the correct way to solve it.
Type below:
_____________

Answer:
80 × 4 = 320
56 × 4 = 224
320 – 224 = 96
$96

Question 18.
Elise said that 0.2 equals 2%. Use words and numbers to explain her mistake.
Type below:
_____________

Answer:
0.2 × 100/100 = 20/100 = 2%

Page No. 312

Question 19.
Write 18% as a fraction.
\(\frac{□}{□}\)

Answer:
\(\frac{9}{50}\)

Explanation:
18% = 18/100 = 9/50

Question 20.
Noah wants to put a variety of fish in his new fish tank. His tank is large enough to hold a maximum of 70 fish.
Part A
Complete the table.
Go Math Grade 6 Answer Key Chapter 5 Model Percents img 37
Type below:
_____________

Answer:
grade 6 chapter 5 image 12

Explanation:
70 × 20/100 = 14
70 × 40/100 = 28
70 × 30/100 = 21

Question 20.
Part B
Has Noah put the maximum number of fish in his tank? Use numbers and words to explain how you know. If he has not put the maximum number of fish in the tank, how many more fish could he put in the tank?
Type below:
_____________

Answer:
No, since 20% + 40% + 30% = 90%, he can add 10% in the tank.

Conclusion:

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