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## Grade 3 Go Math Answer Key Chapter 7 Division Facts and Strategies Extra Practice

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### Common Core – Page No. 149000

**Lessons 7.1–7.2**

**Find the quotient. You may want to draw a quick picture to help.**

Question 1.

8 ÷ 2 = ______

Answer: 4

Question 2.

______ = 14 ÷ 2

Answer: 7

Question 3.

18 ÷ 2 = ______

Answer: 9

Question 4.

______ = 12 ÷ 2

Answer: 6

Question 5.

70 ÷ 10 = ______

Answer: 7

Question 6.

50 ÷ 10 = ______

Answer: 5

Question 7.

40 ÷ 10 = ______

Answer: 4

Question 8.

90 ÷ 10 = ______

Answer: 9

**Lessons 7.3–7.4**

**Find the quotient.**

Question 9.

15 ÷ 5 = ______

Answer: 3

Explanation:

5 divides 15 into 3 equal groups. So the quotient of 15 and 5 is 3.

Question 10.

______ = 45 ÷ 5

Answer: 9

Explanation:

5 divides 45 into nine equal groups. Thus the quotient is 9.

Question 11.

______ = 10 ÷ 5

Answer: 2

Explanation:

5 divides 10 two times. So the quotient of 10 and 5 is 2.

Question 12.

40 ÷ 5 = ______

Answer: 8

Explanation:

5 divides 40 into eight equal groups. So the quotient is 8.

Question 13.

6 ÷ 3 = ______

Answer: 2

Explanation:

3 divides 6 into two equal groups. Thus the quotient is 2.

Question 14.

______ = 21 ÷ 3

Answer: 7

Explanation:

3 divides 21 into seven equal groups. So the quotient is 7.

Question 15.

______ = 24 ÷ 3

Answer: 8

Explanation:

3 divides 24 eight times. Thus the quotient is 8.

Question 16.

______ = 18 ÷ 3

Answer: 6

Explanation:

3 divides 18 into six equal parts. Therefore the quotient is 6.

Question 17.

There are 30 balloons arranged in 6 equal groups. How many balloons are in each group?

______ balloons

Answer: 5 balloons

Explanation:

Total number of balloons = 30

Number of balloons arranged in equals groups = 6

Number of balloons in each group = x

Divide the number of balloons by a number of equal groups.

= 30 ÷ 6 = 5 balloons

Therefore number of balloons in each group = 5

Question 18.

Mr. Song spends $27 on sports drinks. Each bottle costs $3. How many bottles does Mr. Song buy?

______ bottles

Answer: 9

Explanation:

Given,

Mr. Song spends $27 on sports drinks. Each bottle costs $3.

Number of bottles he bought = x

x × 3 = 27

x = 27 ÷ 3 = 9

Thus Mr. Song bought 9 bottles.

**Lesson 7.5**

**Find the quotient.**

Question 19.

28 ÷ 4 = ______

Answer: 7

Explanation:

4 divides 28 seven times. So the quotient is 7.

Question 20.

______ = 16 ÷ 4

Answer: 4

Explanation:

4 divides 16 four times. The quotient of 16 and 4 is 4.

Question 21.

______ = 20 ÷ 4

Answer: 5

Explanation:

4 divides 20 five times. Thus the quotient is 5.

Question 22.

______ = 32 ÷ 4

Answer: 8

Explanation:

4 divides 32 eight times. So the quotient of 32 and 4 is 8.

Question 23.

4)\(\bar { 3 6 }\)

______

Answer: 9

Explanation:

4 divides 36 nine times. Thus the quotient is 9.

Question 24.

4)\(\bar { 1 2 }\)

______

Answer: 3

12 ÷ 4

4 divides 12 three times. So the quotient of 12 and 4 is 3.

Question 25.

4)\(\bar { 2 4 }\)

______

Answer: 6

Explanation:

4 divides 24 six times. Thus the quotient is 6.

24 ÷ 4 = 6

Question 26.

4)\(\bar { 4 }\)

______

Answer: 1

Explanation:

Any number divides by the same number will be always 1. Thus the quotient is 1.

**Find the unknown number.**

Question 27.

a = 40 ÷ 4

a = _____

Answer: 10

Explanation:

Let the unknown number be a

4 divides 40 ten times.

a = 40 ÷ 4

a = 40/4 = 10

Therefore a = 10

Question 28.

0 ÷ 4 = b

b = _____

Answer: 0

Explanation:

0 divides by any number are always 0. So the value of b is 0.

Question 29.

c = 36 ÷ 4

c = ______

Answer: 9

Explanation:

Let c be the unknown number

36 ÷ 4 = C

4 divides 36 nine times.

Thus the value of c is 9.

Question 30.

8 ÷ 4 = d

d = ______

Answer: 2

Explanation:

d is the unknown number

d = 8 ÷ 4

4 divides 8 two times.

Thus the value of d is 2.

### Common Core – Page No. 150000

**Lessons 7.6–7.7**

**Find the unknown factor and quotient.**

Question 1.

7 × ______ = 35 35 ÷ 7 = ______

Answer: 5, 5

Explanation:

Let the unknown factor be x

7 × x = 35

x = 35 ÷ 7

x = 5

Now check whether the related multiplication and division facts are the same.

35 ÷ 7 = 5

Thus the unknown factor and quotient are the same. So the answer is 5.

Question 2.

6 × ______ = 54 54 ÷ 6 = ______

Answer: 9, 9

Explanation:

Let the unknown factor be y

6 × y = 54

y = 54 ÷ 6

6 divides 54 nine times. Thus the unknown factor is 9.

Now check if the related multiplication and division facts are the same.

54 ÷ 6 = 9

Therefore the unknown factor and the quotient are the same I.e., 9

Question 3.

6 × ______ = 18 18 ÷ 6 = ______

Answer: 3, 3

Explanation:

Let the unknown factor be t

6 × t = 18

t = 18/6 = 3

Now check the related multiplication and division facts of the equation

18 ÷ 6 = 3

The related multiplication and division facts are the same.

Thus the unknown factor and quotient are 3.

Question 4.

7 × ______ = 49 49 ÷ 7 = ______

Answer: 7, 7

Explanation:

Let the unknown factor be x

7 × x = 49

x = 49/7 = 7

Check whether the related multiplication and division facts of the equation are the same or not.

49 ÷ 7 = 7

By thus we can say that the related facts are the same. So the unknown factor and quotient are 7.

**Find the quotient.**

Question 5.

36 ÷ 6 = ______

Answer: 6

Explanation:

First take the factors of 6

Factors of 6 are 3, 2

First divide 36 by 3

36 ÷ 3 = 12

Now divide 12 by 2

12 ÷ 2 = 6

So the quotient is 6.

Question 6.

48 ÷ 6 = ______

Answer: 8

Explanation:

The factors of 6 are 3 and 2

First divide by 3

48 ÷ 3 = 16

Now divide 16 by 2

16 ÷ 2 = 8

So the quotient is 8.

Question 7.

7)\(\bar { 6 3 }\)

______

Answer: 9

Explanation:

The factors of 7 are 1, 7

Divide 63 by 7

7 divides 63 nine times. So the quotient is 9.

Question 8.

7)\(\bar { 5 6 }\)

______

Answer: 8

Explanation:

The factors of 7 are 1, 7

7 divides 56 eight times. So the quotient is 8.

**Lessons 7.8–7.9**

**Find the quotient.**

Question 9.

40 ÷ 8 = ______

Answer: 5

Explanation:

Factors of 8 is 4, 2

First divide by 4

40 ÷ 4 = 10

Next divide 10 by 2

10 ÷ 2 = 5

So the quotient is 5.

Question 10.

______ = 24 ÷ 8

Answer: 3

Explanation:

The factors of 8 is 4 and 2

Divide 24 by 4

24 ÷ 4 = 6

Now divide 6 by 2

6 ÷ 2 = 3

So the quotient of 24 ÷ 8 = 3

Question 11.

72 ÷ 9 = ______

Answer: 8

Explanation:

The factors of 9 are 3, 3

First divide 72 by 3

72 ÷ 3 = 24

Next divide 24 by 3

24 ÷ 3 = 8

The quotient of 72 ÷ 9 = 8

Question 12.

______ = 81 ÷ 9

Answer: 9

Explanation:

The factors of 9 are 3, 3

Divide 81 by 3

81 ÷ 3 = 27

Now divide 27 by 3

27 ÷ 3 = 9

The quotient of 81 ÷ 9 = 9

**Find the unknown number.**

Question 13.

36 ÷ 9 = m

m = ______

Answer: 4

Explanation:

Let m be the unknown number

The factors of 9 are 3, 3

First, divide by 3

36 ÷ 3 = 12

Next divide 12 by 3

12 ÷ 3 = 4

So the value of m is 4.

Question 14.

18 ÷ 9 = ■

■ ______

Answer: 2

Explanation:

Take the factors of 9

Divide 18 by 3

18 ÷ 3 = 6

Now divide 6 by 3

6 ÷ 3 = 2

■ = 2

Question 15.

48 ÷ 8 = b

b = ______

Answer: 6

Let b be the unknown number

The factors of 8 is 4, 2

Divide 48 by 4

48 ÷ 4 = 12

Next divide 12 by 2

12 ÷ 2 = 6

Therefore the value of b = 6

Question 16.

56 ÷ 8 = p

p = ______

Answer: 7

Explanation:

Let p be the unknown number

The factors of 8 are 4, 2

First, divide 56 by 4

56 ÷ 4 = 14

Next divide 14 by 2

14 ÷ 2 = 6

The value of p is 6.

**Lesson 7.10**

Question 17.

At a store, there are 5 vases. Each vase has the same number of flowers. Sixteen flowers are sold. Now there are 24 flowers left. How many flowers were in each vase?

______ flowers

Answer: 8 flowers

Explanation:

Given that,

Number of vases = 4

Number of flowers sold = 16

Number of flowers left = 24

Total number of flowers = 16 + 24 = 40

To find the number of flowers in each vase you need to divide the total number of flowers by number of vases

= 40 ÷ 5 = 8 flowers

Thus the number of flowers in each vase = 8

Question 18.

Lizzy bought 4 bags of apples. Each bag had the same number of apples. Her mom gave her 8 more apples. Now Lizzy has 36 apples. How many apples were in each bag?

______ bags

Answer: 7 apples

Explanation:

Given,

Lizzy bought 4 bags of apples.

Number of apples her mother gave = 8

Number of apples now Lizzy have = 36

To find the actual number of apples before her mother gave, we need to subtract 8 from 36

36 – 8 = 28

Now divide the number of apples by number of bags

28 ÷ 4 = 7 apples

Therefore the number of apples in each bag = 7 apples

**Lesson 7.11**

**Follow the order of operations to find the unknown number.**

Question 19.

10 − 3 + 4 = t

t = ______

Answer: 11

Explanation:

First subtract from left to right and then add

10 – 3 + 4 = 7 + 4 = 11

Therefore t = 11

Question 20.

8 − 3 × 2 = p

p = ______

Answer: 2

Explanation:

First multiple 3 and 2

3 × 2 = 6

And then subtract 6 from 8, you get 2

Thus p = 2

Question 21.

24 ÷ 6 + 2 = w

w = ______

Answer: 6

Explanation:

First, divide 24 and 6

24 ÷ 6 = 4

Now add from left to right

4 + 2 = 6

Therefore the unknown number w = 6

### Conclusion

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