Go Math Answer Key

Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 2 Lesson 8 Problem Solving: Rounding to Estimate to secure good marks & knowledge in the exams.

McGraw-Hill Math Grade 4 Answer Key Chapter 2 Lesson 8 Problem Solving: Rounding to Estimate

Solve

Estimate to find the answer.
Question 1.
This week, 16,724 people watched a ball game at a stadium. Last week, 3,296 fewer people watched. About how many people watched a ball game at the stadium last week?
about 14,000 people or 13,400 people
Answer:
Number of people watched a ball game at the stadium last week = 13,428.

Explanation:
Number of people watched a ball game at a stadium = 16,724.
Last week, 3,296 fewer people watched.
=> Number of people watched a ball game at the stadium last week = Number of people watched a ball game at a stadium – 3296
= 16,724 – 3,296
= 13,428.

Question 2.
Joey was born in the year 2009. One of his older cousins was born in 1994. Rounding to the nearest ten, about how many years younger is Joey?
Answer:
15 years younger is Joey.

Explanation:
Year of Joey was born = 2009.
Year of one of his older cousins was born = 1994.
Difference:
Year of Joey was born – Year of one of his older cousins was born
= 2009 – 1994
= 15.

Question 3.
A high school club holds a bake sale to raise money for the band. 96 people came to the sale on Saturday. 145 people came to the sale on Sunday. About how many people came to the bake sale that weekend? Round to the nearest ten.
Answer:
Number of people came to the bake sale that weekend = 241.

Explanation:
Number of people came to the sale on Saturday = 96.
Number of people came to the sale on Sunday = 145.
Number of people came to the bake sale that weekend = Number of people came to the sale on Saturday + Number of people came to the sale on Sunday
= 96 + 145
= 241.
Nearest ten of 241:
250.

Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 3 Lesson 8 Dividing by 6, 7, 8, and 9 to secure good marks & knowledge in the exams.

McGraw-Hill Math Grade 4 Answer Key Chapter 3 Lesson 8 Dividing by 6, 7, 8, and 9

Divide

Question 1.
81 ÷ 9 = ____
Answer:
Dividing 81 by 9 we get quotient 9.

Explanation:
Quotient of:
81 ÷ 9 = 9.

Question 2.
63 ÷ 9 = ___
Answer: 7
Dividing 63 by 9 we get quotient 7.

Explanation:
Quotient of:
63 ÷ 9 = 7.

Question 3.
28 ÷ 7 = ____
Answer:
Dividing 28 by 7 we get quotient 4.

Explanation:
Quotient of:
28 ÷ 7 = 4.

Question 4.
72 ÷ 8 = ___
Answer:
Dividing 72 by 8 we get quotient 9.

Explanation:
Quotient of:
72 ÷ 8 = 9.

Question 5.
16 ÷ 8 = ____
Answer:
Dividing 16 by 8 we get quotient 2.

Explanation:
Quotient of:
16 ÷ 8 = 2.

Question 6.
36 ÷ 6 = ____
Answer:
Dividing 36 by 6 we get quotient 6.

Explanation:
Quotient of:
36 ÷ 6 = 6.

Question 7.
Is the quotient of 32 ÷ 4 greater than or less than the quotient of 24 ÷ 4? Explain how you know without finding the quotients.
Answer:
Yes, quotient of 32 ÷ 4 greater than or less than the quotient of 24 ÷ 4 because 32 ÷ 4 = 8 and 24 ÷ 4 = 6.

Explanation:
Dividing 32 by 4 we get quotient 8.
32 ÷ 4 = 8.
Dividing 24 by 4 we get quotient 6.
24 ÷ 4 = 6.

Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 3 Lesson 7 Dividing by 1, 2, 3, 4, and 5 to secure good marks & knowledge in the exams.

McGraw-Hill Math Grade 4 Answer Key Chapter 3 Lesson 7 Dividing by 1, 2, 3, 4, and 5

Divide
Find the quotient.
Question 1.
9 ÷ 3 = 3
Answer:
Dividing 9 by 3 we get quotient 3.

Explanation:
Quotient of:
9 ÷ 3 = 3.

Question 2.
28 ÷ 4 = ___
Answer:
Dividing 28 by 4 we get quotient 7.

Explanation:
Quotient of:
28 ÷ 4 = 7.

Question 3.
25 ÷ 5 = ___
Answer:
Dividing 25 by 5 we get quotient 5.

Explanation:
Quotient of:
25 ÷ 5 = 5.

Question 4.
16 ÷ 4 = ___
Answer:
Dividing 16 by 4 we get quotient 4.

Explanation:
Quotient of:
16 ÷ 4 = 4.

Question 5.
12 ÷ 2 = ___
Answer:
Dividing 12 by 2 we get quotient 6.

Explanation:
Quotient of:
12 ÷ 2 = 6.

Question 6.
6 ÷ 1 = ____
Answer:
Dividing 6 by 1 we get quotient 6.

Explanation:
Quotient of:
6 ÷ 1 = 6.

Solve.
Question 7.
A deli has 12 rolls. The owner wants to show the rolls on 4 trays with an equal number of rolls on each tray. How many rolls should she put on each tray? _____
Answer:
Number of rolls she puts on each tray = 3.

Explanation:
Number of rolls Deli has = 12.
Number of rolls on each tray = 4.
Number of rolls she puts on each tray = Number of rolls Deli has ÷ Number of rolls on each tray
= 12 ÷ 4
= 3.

Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 3 Lesson 6 Associative and Distributive Properties of Multiplication to secure good marks & knowledge in the exams.

McGraw-Hill Math Grade 4 Answer Key Chapter 3 Lesson 6 Associative and Distributive Properties of Multiplication

Identify the property used in each number sentence.

Question 1.
(12 × 2) × 2 = 12 × (2 × 2)
Associative
Answer:
(12 × 2) × 2 = 12 × (2 × 2) = 48.
Associative property of multiplication.

Explanation:
According to the associative property of multiplication, the product of three or more numbers remains the same regardless of how the numbers are grouped.
(12 × 2) × 2 = 12 × (2 × 2)
= 12 × 4
= 48.

Question 2.
8 × (9 × 3) = (8 × 9) × 3
Answer:
8 × (9 × 3) = (8 × 9) × 3 = 216.
Associative property of multiplication.

Explanation:
According to the associative property of multiplication, the product of three or more numbers remains the same regardless of how the numbers are grouped.
8 × (9 × 3) = (8 × 9) × 3
= 72 × 3
= 216.

Question 3.
(10 + 2) × 6 = (10 × 6) + (2 × 6)
Answer:
(10 + 2) × 6 = (10 × 6) + (2 × 6) = 72.
Distributive Property of multiplication.

Explanation:
According to the distributive property, multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together.
(10 + 2) × 6 = (10 × 6) + (2 × 6)
= 60 + 12
= 72.

Question 4.
7 × (3 + 2) = (7 × 3) + (7 × 2)
Answer:
7 × (3 + 2) = (7 × 3) + (7 × 2) = 35.
Distributive Property of multiplication.

Explanation:
According to the distributive property, multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together.
7 × (3 + 2) = (7 × 3) + (7 × 2)
= 21 + 14
= 35.

Use the Distributive Property to break the fact into two easier facts.

Question 5.
12 × 5 = ___
Answer:
12 × 5 = 60.

Explanation:
12 × 5 = (10 + 2) × 5
= (10 × 5) + (2 × 5)
= 50 + 10
= 60.

Question 6.
6 × 9 = ___
Answer:
6 × 9 = 54.

Explanation:
6 × 9 = (4 + 2) × 9
= (4 × 9) + (2 × 9)
= 36 + 18
= 54.

Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 3 Lesson 5 Identity and Commutative Properties of Multiplication to secure good marks & knowledge in the exams.

McGraw-Hill Math Grade 4 Answer Key Chapter 3 Lesson 5 Identity and Commutative Properties of Multiplication

Identify the property used in each number sentence.

Question 1.
899 × 1 = 899
Identity
Answer:
899 × 1 = 899
Identity property.

Explanation:
The identity property of 1 says that any number multiplied by 1 keeps its identity. In other words, any number multiplied by 1 stays the same.
899 × 1 = 899.

Question 2.
12 × 49 = 49 × 12
Answer:
12 × 49 = 49 × 12 = 588.
Commutative property.

Explanation:
The commutative property states that the numbers on which we operate can be moved or swapped from their position without making any difference to the answer.
12 × 49 = 49 × 12
= 588.

Question 3.
24 × 16 = 16 × 24
Answer:
24 × 16 = 16 × 24 = 384.
Commutative property.

Explanation:
The commutative property states that the numbers on which we operate can be moved or swapped from their position without making any difference to the answer.
24 × 16 = 16 × 24
= 384.

Question 4.
2455 × 1 = 2455
Answer:
2455 × 1 = 2455.
Identity property.

Explanation:
2455 × 1 = 2455.
The identity property of 1 says that any number multiplied by 1 keeps its identity. In other words, any number multiplied by 1 stays the same.

Solve.
Question 5.
Mr. Hunt’s class has 28 students. He wants to put the desks in equal groups. The desks are already in 4 rows of 7 each. What is another way he can arrange the desks?
Answer:
Another ways he can arrange the desks:
2 rows 14 desks in each.
7 rows 4 desks in each.
14 rows 2 desks in each.

Explanation:
Number of students Mr. Hunt’s class has = 28.
The desks are already in 4 rows of 7 each.
Factors of 28:
1 × 28 = 28.
2 × 14 = 28.
4 × 7 = 28.

Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 3 Lesson 4 Multiplying by 10, 11, and 12 to secure good marks & knowledge in the exams.

McGraw-Hill Math Grade 4 Answer Key Chapter 3 Lesson 4 Multiplying by 10, 11, and 12

Multiply
Find the product.
Question 1.
10 × 7 = 70
Answer:
Multiplying 10 by 7 we get product 70.

Explanation:
Product of:
10 × 7 = 70.

Question 2.
11 × 5 = ____
Answer:
Multiplying 11 by 5 we get product 55.

Explanation:
Product of:
11 × 5 = 55.

Question 3.
12 × 8 = ____
Answer:
Multiplying 12 by 8 we get product 96.

Explanation:
Product of:
12 × 8 = 96.

Question 4.
9 × 11 = ____
Answer:
Multiplying 9 by 11 we get product 99.

Explanation:
Product of:
9 × 11 = 99.

Question 5.
10 × 8 = ____
Answer:
Multiplying 10 by 8 we get product 80.

Explanation:
Product of:
10 × 8 = 80.

Question 6.
11 × 11 = ____
Answer:
Multiplying 11 by 11 we get product 121.

Explanation:
Product of:
11 × 11 = 121.

Question 7.
2 × 10 = ____
Answer:
Multiplying 2 by 10 we get product 20.

Explanation:
Product of:
2 × 10 =20.

Question 8.
7 × 11 = ____
Answer:
Multiplying 7 by 11 we get product 77.

Explanation:
Product of:
7 × 11 =77.

Question 9.
12 × 3 = ____
Answer:
Multiplying 12 by 3 we get product 36.

Explanation:
Product of:
12 × 3 = 36.

Question 10.
12 × 6 = ____
Answer:
Multiplying 12 by 6 we get product 72.

Explanation:
Product of:
12 × 6 =72.

Question 11.
10 × 3 = ____
Answer:
Multiplying 10 by 3 we get product 30.

Explanation:
Product of:
10 × 3 = 30.

Question 12.
5 × 12 = ____
Answer:
Multiplying 5 by 12 we get product 60.

Explanation:
Product of:
5 × 12 = 60.

Question 13.
Explain how you can use 8 × 10 to help solve 8 × 12.
Answer:
8 × 12 = 8 × (10 + 2) = 96.

Explanation:
Product of:
8 × 10 = 80.
8 × 12 = 8 × (10 + 2)
= (8 × 10) + (8 × 2)
= 80 + 16
= 96.

Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 3 Lesson 3 Multiplying by 0 and 1 to secure good marks & knowledge in the exams.

McGraw-Hill Math Grade 4 Answer Key Chapter 3 Lesson 3 Multiplying by 0 and 1

Multiply
Find the product.
Question 1.
0 × 1 = 0
Answer:
Multiplying 0 by 1 we get product 0.

Explanation:
Product of:
0 × 1 = 0.

Question 2.
8 × 1 = ____
Answer:
Multiplying 8 by 1 we get product 9.

Explanation:
Product of:
8 × 1 = 8.

Question 3.
1 × 9 = ____
Answer:
Multiplying 1 by 9 we get product 9.

Explanation:
Product of:
1 × 9 = 9.

Question 4.
99 × 0 = ____
Answer:
Multiplying 99 by 0 we get product 0.

Explanation:
Product of:
99 × 0 = 0.

Question 5.
5 × 1 = ____
Answer:
Multiplying 5 by 1 we get product 5.

Explanation:
Product of:
5 × 1 = 5.

Question 6.
1 × 5 = ____
Answer:
Multiplying 1 by 5 we get product 5.

Explanation:
Product of:
1 × 5 = 5.

Question 7.
12 × 1 = ____
Answer:
Multiplying 12 by 1 we get product 12.

Explanation:
Product of:
12 × 1 = 12.

Question 8.
0 × 45 = ____
Answer:
Multiplying 0 by 45 we get product 0.

Explanation:
Product of:
0 × 45 = 0.

Question 9.
550 × 1 = ____
Answer:
Multiplying 550 by 1 we get product 550.

Explanation:
Product of:
550 × 1 = 550.

Question 10.
Aaron wants to mail out 26 invitations for his birthday party next week. If he needs 1 stamp for each invitation, then how many stamps does Aaron need in all?
Answer:
Number of stamps Aaron need in all = 26.

Explanation:
Number of invitations for his birthday party Aaron wants to mail out next week = 26.
Number of stamps for each invitation he needs = 1.
Number of stamps Aaron need in all = Number of invitations for his birthday party Aaron wants to mail out next week × Number of stamps for each invitation he needs
= 26 × 1
= 26.

Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 3 Lesson 2 Multiplying by 6, 7, 8, and 9 to secure good marks & knowledge in the exams.

McGraw-Hill Math Grade 4 Answer Key Chapter 3 Lesson 2 Multiplying by 6, 7, 8, and 9

Multiply
Find the product.
Question 1.
6 × 7 = 42
Answer:
Multiplying 6 by 7 we get product 42.

Explanation:
Product of:
6 × 7 = 42.

Question 2.
8 × 5 = ____
Answer:
Multiplying 8 by 5 we get product 40.

Explanation:
Product of:
8 × 5 = 40.

Question 3.
9 × 8 = ____
Answer:
Multiplying 9 by 8 we get product 72.

Explanation:
Product of:
9 × 8 = 72.

Question 4.
9 × 3 = ____
Answer:
Multiplying 9 by 3 we get product 27.

Explanation:
Product of:
9 × 3 = 27.

Question 5.
8 × 8 = ____
Answer:
Multiplying 8 by 8 we get product 64.

Explanation:
Product of:
8 × 8 = 64.

Question 6.
7 × 5 = ____
Answer:
Multiplying 7 by 5 we get product 35.

Explanation:
Product of:
7 × 5 = 35.

Question 7.
7 × 7 = ____
Answer:
Multiplying 7 by 7 we get product 49.

Explanation:
Product of:
7 × 7 = 49.

Question 8.
6 × 8 = ____
Answer:
Multiplying 6 by 8 we get product 48.

Explanation:
Product of:
6 × 8 = 48.

Question 9.
5 × 9 = ____
Answer:
Multiplying 5 by 9 we get product 45.

Explanation:
Product of:
5 × 9 = 45.

Question 10.
Hank arranges 8 rows of small pizzas on a large table. There are 7 pizzas in each row. How maný pizzas are there in all?
Answer:
Number of pizzas are therein all = 56.

Explanation:
Number of rows of small pizzas Hank arranges on a large table = 8.
Number of pizzas in each row = 7.
Number of pizzas are therein all = Number of rows of small pizzas Hank arranges on a large table × Number of pizzas in each row
= 8 × 7
= 56.

Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 3 Lesson 1 Multiplying by 2, 3, 4, and 5 to secure good marks & knowledge in the exams.

McGraw-Hill Math Grade 4 Answer Key Chapter 3 Lesson 1 Multiplying by 2, 3, 4, and 5

Multiply
Find the product.
Question 1.
2 × 3 = 6
Answer:
Multiplying 2 by 3 we get product 6.

Explanation:
Product of:
2 × 3 = 6.

Question 2.
3 × 4 = ____
Answer:
Multiplying 3 by 4 we get product 12.

Explanation:
Product of:
3 × 4 = 12.

Question 3.
4 × 4 = ____
Answer:
Multiplying 4 by 4 we get product 16.

Explanation:
Product of:
4 × 4 = 16.

Question 4.
5 × 4 = ____
Answer:
Multiplying 5 by 4 we get product 20.

Explanation:
Product of:
5 × 4 = 20.

Question 5.
3 × 3 = ____
Answer:
Multiplying 3 by 3 we get product 9.

Explanation:
Product of:
3 × 3 = 9.

Question 6.
3 × 2 = ____
Answer:
Multiplying 3 by 2 we get product 6.

Explanation:
Product of:
3 × 2 = 6.

Write a multiplication sentence for each addition sentence.
Question 7.
3 + 3 + 3 = 9
Answer:
Adding 3 3 times gives the sum of 9.
3 + 3 + 3 = 9.

Explanation:
3 + 3 + 3
= 3 × 3times
= 9.

Question 8.
5 + 5 + 5 + 5 = 20
Answer:
Adding 5 4 times gives the sum of 20.

Explanation:
5 + 5 + 5 + 5
= 5 × 4times
= 20.

Question 9.
2 + 2 = 4
Answer:
Adding 2 2 times gives the sum of 4.

Explanation:
2 + 2
= 2 × 2times
= 4.

Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 2 Test to secure good marks & knowledge in the exams.

McGraw-Hill Math Grade 4 Chapter 2 Test Answer Key

Identify the property shown in each number sentence.
Question 1.
0 + 3, 240 = 3,240
Answer:
Commutative property.
0 + 3, 240 = 3,240.

Explanation:
Commutative property: When we add two or more whole numbers, their sum is the same regardless of the order of the addends.
Sum of:
0 + 3, 240 = 3,240.

Question 2.
22,055 + 672 = 672 + 22,055
Answer:
22,055 + 672 = 672 + 22,055 = 22,727.
Commutative property.

Explanation:
Commutative property: When we add two or more whole numbers, their sum is the same regardless of the order of the addends.
Sum of:
22,055 + 672 = 672 + 22,055
= 22,727.

Question 3.
16 + (0 + 33) = 16 + 33
Answer:
16 + (0 + 33) = 16 + 33 = 49.
Associative property.

Explanation:
Associative property.
When three or more numbers are added, the sum is the same regardless of the grouping of the addends.
Sum of:
16 + (0 + 33)
= 16 + 33
= 49.

Question 4.
(13 + 1) + 7 = 13 + (1 + 7)
Answer:
(13 + 1) + 7 = 13 + (1 + 7) = 21.
Associative property.

Explanation:
Associative property.
When three or more numbers are added, the sum is the same regardless of the grouping of the addends.
Sum of:
(13 + 1) + 7 = 13 + (1 + 7)
= 13 + 8
= 21.

Question 5.
(4 + 9) + 69 = 4 + (9 + 69)
Answer:
(4 + 9) + 69 = 4 + (9 + 69) = 82.
Associative property.

Explanation:
Associative property.
When three or more numbers are added, the sum is the same regardless of the grouping of the addends.
Sum of:
(4 + 9) + 69 = 4 + (9 + 69)
= 4 + 78
= 82.

Question 6.
18 + 40 = 40 + 18
Answer:
18 + 40 = 40 + 18 = 58.
Commutative property.

Explanation:
Commutative property: When we add two or more whole numbers, their sum is the same regardless of the order of the addends.
Sum of:
18 + 40 = 40 + 18 = 58.

Question 7.
Janet tells her father that when zero is added to a number, the number does not change. She states that the rule is called the Commutative Property of Addition. Is she correct? Why or why not?
Answer:
No, she is not correct because when zero is added to a number, the number does not change, its additive identity property not Commutative Property of Addition.

Explanation:
It means that additive identity is “0” as adding 0 to any number, gives the sum as the number itself.
Commutative property of addition: Changing the order of addends does not change the sum.

Question 8.
Which subtraction problem would you use to check the answer to 145 + 83 = 228? Place a check mark next to your answer.
____ 145 – 83 ____ 228 – 83 ____ 83 + 228 ____ 83 + 145
Answer:
145 + 83 = 83 + 145 = 228.

Explanation:
145 – 83 = 62.
228 – 83 = 145.
83 + 228 = 311.
83 + 145 = 228. *

Question 9.
Which addition problem would you use to check the answer to 598 — 266 = 332? Place a check mark next to your answer.
____ 598 + 332 ____ 266 + 598 ____ 598 + 266 ____ 332 + 266
Answer:
598 – 266 = 332.
=> 332 = 598 – 266.*

Explanation:
598 + 332 = 930.
266 + 598 = 864.
598 + 266 = 864.
332 + 266 = 598.
=> 332 = 598 – 266.*

Add.
Question 10.

Answer:

Explanation:
Sum of:
734 + 453 = 1,187.

Question 11.

Answer:

Explanation:
Sum of:
61,456 + 30,547 = 92,003.

Question 12.

Answer:

Explanation:
Sum of:
53,406 + 6,732 = 60,138.

Question 13.

Answer:

Explanation:
Sum of:
73,375 + 4,06,909 + 7,528
= 4,80,284 + 7,528
= 4,87,812.

Question 14.

Answer:

Explanation:
Sum of:
4,41,775 + 4,10,963
= 8,52,738.
Question 15.

Answer:

Explanation:
Sum of:
8,542 + 3,985 + 4,601
= 12,527 + 4,601
= 17,128.

Subtract
Question 16.

Answer:

Explanation:
Difference between:
873 – 283
= 590.

Question 17.

Answer:

Explanation:
Difference between:
9,528 – 7,336
= 2,192.

Subtract.
Question 18.

Answer:

Explanation:
Difference between:
48,016 – 25,632
= 22,384.

Question 19.

Answer:

Explanation:
Difference between:
5,96,744 – 2,83,475
= 3,13,269.

Question 20.

Answer:

Explanation:
Difference between:
7,45,831 – 56,779
= 6,89,052.

Question 21.

Answer:

Explanation:
Difference between:
9,16,550 – 8,84,062
= 32,488.

Add or subtract to complete each table.
Question 22.

Answer:

Explanation:
x = 5
=> x + 25 = 5 + 25 = 30.
x = 10
=> x + 25 = 10 + 25 = 35.
x = 15
=> x + 25 = 15 + 25 = 40.
x = 20
=> x + 25 = 20 + 25 = 45.
x = 25
=> x + 25 = 25 + 25 = 50.

Question 23.

Answer:

Explanation:
y = 400.
=> y – 40 = 400 – 40 = 360.
y = 360.
=> y – 40 = 360 – 40 = 320.
y = 320.
=> y – 40 = 320 – 40 = 280.
y = 280.
=> y – 40 = 280 – 40 = 240.
y = 240.
=> y – 40 = 240 – 40 = 200.

Solve. Show your work.
Question 24.
Gavin is 13 years old. His older cousin is 27 years old. When Gavin is 46 years old, how old will his cousin be?
Answer:
Number of years old his older cousin after = 60.

Explanation:
Number of years old Gavin = 13.
Number of years old his older cousin = 27.
Number of years old Gavin after = 46.
Difference:
Number of years old Gavin after – Number of years old Gavin
= 46 – 13
= 33.
Number of years old his older cousin after = 33 + Number of years old his older cousin
= 33 + 27
= 60.

Question 25.
Megan spent 930 minutes last month swimming, and she spent 1,395 minutes doing homework. If she spends 1,240 minutes this month swimming, how many minutes will she spend doing homework if she increases the time spent by the same amount?
Answer:
Number of minutes she spends doing homework this month = 2,635.

Explanation:
Number of minutes Megan spent last month swimming = 930.
Number of minutes Megan spent doing homework = 1,395.
Number of minutes Megan spent this month swimming = 1,240.
Number of minutes she spends doing homework this month = Number of minutes Megan spent this month swimming + Number of minutes Megan spent doing homework
= 1,240 + 1,395
= 2,635.

Question 26.
On Saturday, 11,794 people watched a rock concert at a stadium. On Sunday, 2,455 fewer people watched. About how many people watched a concert at the stadium on Sunday?
Answer:
Number of people watched a concert at the stadium on Sunday = 9,339.

Explanation:
Number of people watched a rock concert at a stadium on Saturday = 11,794.
On Sunday, 2,455 fewer people watched.
=>Number of people watched a concert at the stadium on Sunday = Number of people watched a rock concert at a stadium on Saturday  -Number of people watched a rock concert at a stadium on Saturday
= 11,794 – 2,455
= 9,339.