Go through the Math in Focus Grade 3 Workbook Answer Key Chapter 6 Practice 4 Multiply by 8 to finish your assignments.

## Math in Focus Grade 3 Chapter 6 Practice 4 Answer Key Multiply by 8

**Complete the multiplication fact. Then show on the number line.**

Question 1.

3 × 8 = ____

Answer:

3 × 8 = 24.

Explanation:

Here we have represented the number line of 3 × 8 which is 24, as it has 3 jumps of 8.

**Complete the multiplication fact. Then shade to show on the area model.**

Question 2.

6 × 8 = ____

Answer:

6 × 8 = 48.

Explanation:

The model of 6 × 8 is

**Fill in the missing numbers.**

Question 3.

8 eights = 8 × ___

Answer:

8 eights = 8 × 8 64.

Explanation:

Given that 8 eights which means 8 × 8 are 64.

So the missing digit is 8.

Question 4.

3 eights = 8 × ____

Answer:

3 eights = 8 × 3 = 24.

Explanation:

Given that 3 eights which means 3 × 8 are 24.

So the missing digit is 3.

Question 5.

6 + 6 + 6 + 6 + 6 + 6 + 6 + 6 = 8 × ____

Answer:

6 + 6 + 6 + 6 + 6 + 6 + 6 + 6 = 8 × 6 = 48.

Explanation:

Given that 6 + 6 + 6 + 6 + 6 + 6 + 6 + 6, and we can write this as 8 × 6 which is 64.

So the missing digit is 6.

Question 6.

8 + 8 + 8 + 8 + 8 + 8 = 6 × ____

Answer:

8 + 8 + 8 + 8 + 8 + 8 = 6 × 8 = 48.

Explanation:

Given that 8 + 8 + 8 + 8 + 8 + 8, and we can write this as 6 × 8 which is 48.

So the missing digit is 8.

Question 7.

5 × 8 = 8 × ____

Answer:

5 × 8 = 8 × 5 = 40.

Explanation:

Here, by using commutative property we can write 5 × 8 = 8 × 5 which is 40.

Question 8.

5 eights = 8 + 8 + ___ + ___ + ____

Answer:

5 eights = 8 + 8 + 8 + 8 + 8 = 40

Explanation:

Given that 5 eights which means 5 × 8 are 40.

So 8 + 8 + 8 + 8 + 8 = 40.

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

Question 9.

8 × 4 = 10 groups of 4 – ___ groups of 4

= ___ – ____

= ____

Answer:

8 × 4 = 10 groups of 4 – 2 groups of 4

= 32.

Explanation:

Given that

8 × 4 = 10 groups of 4 – 2 groups of 4 which is

= 40 – 16

= 32.

Question 10.

10 × 8 = ___

8 × 8 = ___ groups of 8

= 10 groups of 8 – ____ groups of 8

= ____ – ____

= ____

Answer:

10 × 8 = 80,

8 × 8 = 8 groups of 8 = 64.

Explanation:

Given that 10 × 8 = 80 and

8 × 8 = 8 groups of 8

= 10 groups of 8 – 2 groups of 8

= 80-16

= 64.

Question 11.

5 × 8 = ____

7 ×8 = ___ groups of 8

= 5 groups of 8 + ___ groups of 8

= ___ + ____

= ___

Answer:

5 × 8 = 40.

7 ×8 = 7 groups of 8 = 56.

Explanation:

Given that 5 × 8 which is 40 and

7 ×8 = 7 groups of 8 which is

= 5 groups of 8 + 2 groups of 8

= 40+16

= 56.

**Multiply and match.**

Question 12.

Answer:

Question 13.

What is the missing multiplication fact? ___

Answer:

8×1 =8.

Explanation:

The missing multiplication fact is 8×1 which is 8.

**Solve.**

Example

An octagon has 8 equal sides.

How many sides do 5 octagons have?

5 × 8 = 40

5 octagons have __40__ sides.

Question 14.

8 children make up a team.

How many children make up 7 teams?

____ children make up 7 teams.

Answer:

56 children make up 7 teams.

Explanation:

Given that 8 children make up a team. So the number of children makeup 7 teams is

8×7 which is 56 children.

Question 15.

A chocolate cake has 8 cherries.

How many cherries do 6 such cakes have?

6 such cakes have ___ cherries.

Answer:

6 such cakes have 48 cherries.

Explanation:

Given that a chocolate cake has 8 cherries. So for 6 cakes, there will be

6×8 which is 48 cherries.