Practice the questions of **McGraw Hill Math Grade 8 Answer Key PDF** **Lesson 2.1 Multiplying and Dividing Whole Numbers**Â to secure good marks & knowledge in the exams.

## McGraw-Hill Math Grade 8 Answer Key Lesson 2.1 Multiplying and Dividing Whole Numbers

**Exercises Multiply**

Question 1.

Answer:

2,820,

Explanation:

1

235

X 12

0470

2350

2,820

Question 2.

Answer:

3,652,

Explanation:

332

X 11

0332

3320

3,652

Question 3.

Answer:

3,363,

Explanation:

6,6

177

X 19

1,593

1,770

3,363

Question 4.

Answer:

5,720,

Explanation:

1

44

X 130

0000

1320

4400

5,720

Question 5.

Answer:

84,210,

Explanation:

401

X 210

00000

04010

80200

84,210

Question 6.

Answer:

31,049

Explanation:

5

509

X 61

00509

30540

31,049

Question 7.

Answer:

11,343,

Explanation:

597

X 19

05373

05970

11,343

Question 8.

Answer:

17,922,

Explanation:

618

X 29

05,562

12,360

17,922

Question 9.

Ariel earns money by mowing lawns in his neighborhood. If he can mow 3 lawns in an hour, how many lawns can he mow working 30 hours a week?

Answer:

90 lawns in a week,

Explanation:

Given Ariel earns money by mowing lawns in his neighborhood.

If he can mow 3 lawns in an hour, Number how many lawns can he mow working 30 hours a week is 30 X 3 lawns = 90 lawns in a week.

Question 10.

Winona is tracking the amount of water that the people of her town use during the summer months. She calculates that 47,005 gallons of water are used every day. If Wmona tracks the water usage for 112 days, how much water will be used during that time?

Answer:

52,64,560 gallons of water,

Explanation:

As Winona is tracking the amount of water that the people of her town use during the summer months. She calculates that 47,005 gallons of water are used every day. If Wmona tracks the water usage for 112 days, how much water will be used during that time is 47,005 X 112 = 52,64,560 gallons of water.

**Exercises Divide**

Question 1.

Answer:

156 R7,

Explanation:

Given to divide 1255 by 8 we get

8)1255(156

Â Â 08

Â Â 45

Â Â 40

Â Â Â 55

Â Â Â 48

Â Â Â Â 7

so it is 156R7.

Question 2.

Answer:

1,274R1,

Explanation:

Given to divide 15,289 by 12 we get

12) 15,289(1,274

Â Â Â 12

Â Â Â Â 32

Â Â Â Â 24

Â Â Â Â 088

Â Â Â Â Â 84

Â Â Â Â Â Â Â 49

Â Â Â Â Â Â Â 48

Â Â Â Â Â Â Â Â 1

So it is 1,274R1.

Question 3.

Answer:

83R43,

Explanation:

Given to divide 4,027 by 48 we get

48) 4027(83

Â Â Â 384

Â Â Â Â 187

Â Â Â Â 144

Â Â Â Â Â 43

So it is 83R43.

Question 4.

Answer:

144R5,

Explanation:

Given to divide 1,301 by 9 we get

9)1,301(144

Â Â Â 09

Â Â Â Â 40

Â Â Â Â 36

Â Â Â Â Â 41

Â Â Â Â Â 36Â Â

So it is 144R5.

Question 5.

Answer:

47R10,

Explanation:

Given to divide 715 by 15 we get

15)715(47

Â Â Â 60

Â Â Â Â 115

Â Â Â Â 105

Â Â Â Â Â 10

So it is 47R10.

Question 6.

Answer:

33R7,

Explanation:

Given to divide 403 by 12 we get

12) 403(33

Â Â Â 36

Â Â Â Â 43

Â Â Â Â 36

Â Â Â Â Â 7

So it is 33R7.

Question 7.

Answer:

107,

Explanation:

Given to divide 321 by 3 we get

3)321(107

Â Â 30

Â Â Â 21

Â Â Â 21

Â Â Â 0

So it is 107.

Question 8.

Answer:

85,

Explanation:

Given to divide 425 by 5 we get

5)425(85

Â Â 40

Â Â Â 25

Â Â Â 25

Â Â Â 0

So it is 85.

Question 9.

Aubrey wants to divide his penny collection equally among his 14 cousins. Â¡f he has 1,722 pennies in his collection, how many pennies will each one of his cousinÅ¡ receive?

Answer:

Each one of his cousinÅ¡ receive 123 pennies,

Explanation:

As Aubrey wants to divide his penny collection equally among his 14 cousins.

If he has 1,722 pennies in his collection, Number of pennies will each one of

his cousinÅ¡ receive are 14 divides 1,722 are

14)1,722(123

Â Â Â 14

Â Â Â Â Â 32

Â Â Â Â Â 28

Â Â Â Â Â 42

42

0

123 pennies.

Question 10.

Emily wants to bring candy to share with her class at school. If she has 210 pieces of candy, and there are 30 students in her class, how many pieces of candy will each student receive?

Answer:

7 pieces of candy will each student receive,

Explanation:

As Emily wants to bring candy to share with her class at school. If she has 210 pieces of candy, and there are 30 students in her class, Number of pieces of candy will each student receive are 210 divides by 30 we get

30)210(7

Â Â Â 210

0

7 pieces of candy.