Go through the Math in Focus Grade 3 Workbook Answer Key Chapter 6 Practice 3 Multiply by 7 to finish your assignments.

## Math in Focus Grade 3 Chapter 6 Practice 3 Answer Key Multiply by 7

Example

Question 1.

Answer:

6×7 = 42.

Explanation:

In the above image, we can see that the array of 6×7 which is 42.

Question 2.

Answer:

7×7 = 49.

Explanation:

In the above image, we can see that the array of 7×7 which is 49.

**Fill in the missing numbers.**

Question 3.

6 sevens = 6 × ___

Answer:

6 sevens = 6 × 7 = 42.

Explanation:

Given that 6 sevens which is 6 × 7 = 42.

Question 4.

9 × 7 = ___ sevens

Answer:

9 × 7 = 9 sevens.

Explanation:

Given that 9 × 7 which have 9 sevens which is 63.

Question 5.

5 + 5 + 5 + 5 + 5 + 5 + 5 = 7 × ___

Answer:

5 + 5 + 5 + 5 + 5 + 5 + 5 = 7 × 5 = 35.

Explanation:

Given that 5 + 5 + 5 + 5 + 5 + 5 + 5 which can be also 7×5 = 35.

Question 6.

10 × 7 = 7 × ___

Answer:

10 × 7 = 7 × 10 =70.

Explanation:

Here, by using commutative property we can write 10 × 7 = 7 × 10 = 70.

**Multiply. Use multiplication facts you know to and other multiplication facts.**

Question 9.

7 × 4 = 5 groups of 4 + ___ groups of 4

= ____ + ____

= ____

Answer:

7 × 4 = 28.

Explanation:

Given that 7 × 4 which is

= 5 groups of 4 + 2 groups of 4

= 20+8

= 28.

Question 10.

5 × 7 = ___

7 × 7 = 5 groups of 7 + __ groups of 7

= ____ + ____

= _____

Answer:

5 × 7 = 35,

7 × 7 = 49.

Explantion:

Given that 5 × 7 which is 35,

5 × 7 = 35

7 × 7 = 5 groups of 7 + 2 groups of 7

= 35+14

= 49.

Question 11.

10 × 7 = ____

9 × 7 = 10 groups of 7 – ___ groups of 7

= ____ + ____

= ___

Answer:

10 × 7 = 70.

9 × 7 = 63.

Explanation:

Given that 10 × 7 which is 70,

9 × 7 = 10 groups of 7 – 1 groups of 7

= 70 + 7

= 63.

**Multiply and match.**

Question 12.

Answer:

**Solve.**

Question 13.

Mrs. Thompson buys 2 books. Each book costs $7.

How much does Mrs. Thompson pay in all?

2 × $7 = $ ___

Mrs. Thompson pays $__________ in all.

Answer:

Mrs. Thompson pays $14 in all.

Explanation:

Given that Mrs. Thompson bought 2 books and each book costs $7. So the total cost of Mrs. Thompson pay in all is 2 × $7 which is $14.

Question 14.

A box contains 7 crayons.

Alex packs 10 such boxes into his bog.

How many crayons does Alex have in all?

10 × 7 = ______

Alex has ___ crayons in all.

Answer:

Alex has 70 crayons in all.

Explanation:

Given that a box contains 7 crayons and Alex packs 10 such boxes into his box. So the number of crayons does Alex have in all is 7 × 10 is 70 crayons.

Question 15.

Mr. Dean gives each student 7 okras in art class.

How many okras does he give 4 students?

4 × 7 = ___

He gives 4 students ___ okras.

Answer:

He gives 4 students 28 okras.

Explanation:

Given that Mr. Dean gives each student 7 okras in art class. So the number of okras does he give 4 students is

7 × 4 = 28 okras.