We included **HMH Into Math Grade 3 Answer Key**** PDF** **Module 3 Lesson 3 Multiply with 3 and 6** to make students experts in learning maths.

## HMH Into Math Grade 3 Module 3 Lesson 3 Answer Key Multiply with 3 and 6

I Can use different strategies to multiply with the factors 3 and 6 and solve equal groups problems.

**Spark Your Learning**

Your community wants to use wind turbines to bring electricity to homes. Each wind turbine has 3 blades. Choose any number of wind turbines for your community from 5 to 9. How many blades are there?

Show two different ways to find the number of blades.

There are ___ wind turbines with ___ blades on each.

There are ___ blades.

Answer:

Explanation:

I chose 5 wind turbines

Each wind turbine has 3 blades

There are 5 wind turbines with 3 blades on each

The multiplication equation that model the problem is 5 x 3 =15

There are 15 blades.

**Turn and Talk** What multiplication equation represents this problem? What if one more wind turbine is added? What multiplication equation represents this problem now?

Answer:

The multiplication equation that model the problem is 5 x 3 =15

If 1 more is added, the number of blades will be 18

The multiplication equation that model the problem will be 6 x 3 = 18.

**Build Understanding**

1. There are 4 wind turbines off the coast of a small town. Each wind turbine has 3 blades. How many blades are there on 4 wind turbines?

Count equal groups to find the number of blades. Show your work.

A. How many equal groups are there? _____

B. How many objects are in each group? _____

C. What multiplication equation can you write for the problem? _____

D. How many blades are there on 4 wind turbines? _____

Answer:

Explanation:

There are 4 wind turbines off the coast of a small town

Each wind turbine has 3 blades

There are 4 equal groups

There are 3 objects in each group

The multiplication equation that solves the problem is 4 x 3 = 12

So, 4 turbines have 12 blades.

**Turn and Talk** How does drawing equal groups help you count?

Answer:

Drawing equal groups help to count easily by seeing the picture we can find the product of number of groups and number of objects in each group.

**Step It Out**

2. A wind farm has rows of wind turbines. The farm has 9 wind turbines in each row. How many wind turbines are there in 6 rows?

6 × 9 =

Use a 5s fact and addition to help.

A. Write a 5s fact with the factor 9. ____

B. Then add 1 more group of 9.

______________

C. Write a multiplication equation to model the problem.

______________

D. How many wind turbines are there in 6 rows?

______________

Answer:

54 turbines

Explanation:

A wind farm has 6 rows of wind turbines

The farm has 9 wind turbines in each row

Use a 5s fact and addition to help

Write a 5’s fact with the factor 9

5 x 9 = 45

Add 1 more group of 9

45 + 9 = 54

The multiplication equation that model the problem is 6 x 9 = 54

So, there are 54 turbines in 6 rows.

3. Pedro is making 6 small pinwheels for a garden. Each pinwheel will have 8 blades. How many blades will be on 6 pinwheels?

6 × 8 =

Use a 3s fact and doubling to help.

A. Write a 3s fact with the factor 8. ____

B. Then double the product. ____

C. Write a multiplication equation to model the problem.

_______________

D. How many blades will be on 6 pinwheels?

________________

Answer:

48 blades on 6 pinwheels

Explanation:

Pedro is making 6 small pinwheels for a garden

Each pinwheel will have 8 blades

Use a 3’s fact and doubling to help

Write a 3’s fact with the factor 8

3 x 8 = 24

Double the product

24 + 24 = 48

So, the multiplication equation that model the problem is 6 x 8 = 48

Therefore, there are 48 blades on 6 pinwheels.

4. Another wind farm has 6 rows of wind turbines. There are 4 wind turbines in each row. How many wind turbines are there in 6 rows?

A. Complete the multiplication table to help solve the problem. Use strategies you know to find the products for the 3s facts and the 6s facts.

B. Circle the product where the row for 6 and the column for 4 meet.

C. How many wind turbines are there in 6 rows?

_______________

Answer:

Answer:

24 turbines are in 6 rows

Explanation:

Another wind farm has 6 rows of wind turbines

There are 4 wind turbines in each row

I completed the multiplication table

I doubled the products of 3’s facts to find the products of 6’s facts

I drew a circle around the number 24 as it is the 6’s fact of the factor 4

6 x 4 = 24

So, The are 24 turbines in 6 rows.

**Turn and Talk** What do you notice about the products in the rows for 3 and 6?

Answer:

The products in the rows for 6 are the doubles of the products of the rows for 3.

**Check Understanding Math Board**

Question 1.

Karina is making 6 small pinwheels for the community garden. Each pinwheel will have 7 blades. How many blades will be on 6 pinwheels?

______________

Answer:

42 blades are on 6 pinwheels

Explanation:

Karina is making 6 small pinwheels for the community garden

Each pinwheel will have 7 blades

The multiplication equation that models the problem is

6 x 7 =

Use a 3’s fact and double the product

3’s fact of 7

3 x 7 = 21

Double the product

21 + 21 = 42

So, 6 x 7 = 42

Therefore, there are 42 blades on 7 pinwheels.

**Use a 3s fact and doubles to find the product.**

Question 2.

6 × 9 =

Answer:

6 x 9 = 54

Explanation:

6 x 9

Use a 3’s fact and double the product

3 x 9 = 27

Double the product

27 + 27 = 54

The multiplication equation that model the problem is 6 x 9 = 54.

**Use a 5s fact and addition to find the product.**

Question 3.

6 × 8 =

Answer:

6 x 8 = 48

Explanation:

6 x 8 =

Use a 5s fact and addition to help

Write a 5’s fact with the factor 8

5 x 9 = 40

Add 1 more group of 8

40 + 8 = 48

The multiplication equation that model the problem is 6 x 8 = 48.

**On Your Own**

Question 4.

**Use Tools** Michael buys 2 packages of hamburger buns. Each package has the number of buns shown. How many hamburger buns are in 2 packages?

- Show the equal groups.
- Write a multiplication equation for the problem.

_____________

There are ___ hamburger buns.

Answer:

Explanation:

Michael buys 2 packages of hamburger buns

Each package has the 6 number of buns

I drew to show 2 equal groups of 6 objects

The multiplication equation that model the problem is 2 x 6 = 12

So, There are 12 hamburger buns.

**Find the product using a 5s fact and addition.**

Question 5.

6 × 7 =

Answer:

6 x 7 = 42

Explanation:

6 x 7 =

Use a 5s fact and addition to help

Write a 5’s fact with the factor 7

5 x 7 = 35

Add 1 more group of 7

35 + 7 = 42

The multiplication equation that model the problem is 6 x 7 = 42.

Question 6.

6 × 6 =

Answer: 36

Write a 5s fact with the factor 6.

5 × 6 = 30

Add 1 more group of 6.

30 + 6 = 36

The multiplication equation that model the problem is 6 x 6 = 36.

**Find the product using a 3s fact and doubling.**

Question 7.

6 × 4 =

Answer:

6 x 4 = 24

Explanation:

6 x 9

Use a 3’s fact and double the product

3 x 4 = 12

Double the product

12 + 12 = 24

The multiplication equation that model the problem is 6 x 4 = 24.

Question 8.

6 × 6 =

Answer:

6 x 6 = 36

Explanation:

6 x 6

Use a 3’s fact and double the product

3 x 6 = 18

Double the product

18 + 18 = 36

The multiplication equation that model the problem is 6 x 6 = 36.

**On Your Own**

Question 9.

**Use Tools** Diane has 4 rolls of fabric. She can make 3 costumes with each roll. How many costumes can Diane make? Show the equal groups. _____

Answer:

Explanation:

Diane has 4 rolls of fabric. She can make 3 costumes with each roll

I drew 4 equal groups of 3 objects each

The multiplication equation is

4 x 3 =

Use a 2’s fact with factor 3 and double the product

2 x 3 = 6

6 + 6 = 12

So, 4 x 3 = 12

Therefore, Diane can make 12 costumes.

Question 10.

**Use Structure** Devon plants 6 rows of tomato plants in a garden. There are 4 plants in each row. How many tomato plants does Devon plant?

Answer:

Given,

Devon plants 6 rows of tomato plants in a garden. There are 4 plants in each row.

6 × 4 = 24

Thus Devon plant 24 tomato plants.

**Use the multiplication table to find the product.**

Answer:

Question 11.

3 × 9 = ___

Answer:

27

Explanation:

3 x 9 = 27

The product of 3 and 9 is 27.

Question 12.

6 × 9 = ___

Answer:

6 x 9 = 54

Explanation:

Use 3’s fact with 9

3 x 9 = 27

Double it

27 + 27 = 54

So, 6 x 9 = 54.

Question 13.

3 × 7 = ___

Answer:

21

Explanation:

3 x 7 = 21

The product of 3 and 7 is 21.

Question 14.

6 × 7 = ___

Answer:

6 x 7 = 42

Explanation:

Use 3’s fact with 7

3 x 7 = 21

Double it

21 + 21 = 42

So, 6 x 7 = 42.

**Find the product.**

Question 15.

3 × 8 = ___

Answer:

24

Explanation:

3 x 8 = 24

The product of 3 and 8 is 24.

Question 16.

___ = 6 × 6

Answer:

36

Explanation:

6 x 6

Use a 3’s fact and double the product

3 x 6 = 18

Double the product

18 + 18 = 36

So, 6 x 6 = 36.

Question 17.

8 × 6 = ___

Answer:

48

Explanation:

8 x 6 =

Use a 3’s fact and double the product

8 x 3 = 24

Double the product

24 + 24 = 48

So, 8 x 6 = 48.

Question 18.

Answer:

Explanation:

Any number multiplied by 10 will have 0 in ones place and the number itself in tens place

So, 3 x 10 = 30.

Question 19.

Answer:

Explanation:

5 x 6

Use 3’s fact for 5 and double the product

5 x 3 = 15

15 + 15 = 30

So, 5 x 6 = 30.

Question 20.

Answer:

Explanation:

4 x 3 =

Use a 2’s fact with 3 and double the product

2 x 3 = 6

6 + 6 = 12

So, 4 x 3 = 12.

Question 21.

Answer:

Explanation:

6 x 7 =

Use a 3’s fact with 7 and double the product

3 x 7 = 21

21 + 21 = 42

So, 6 x 7 = 42.

Question 22.

Answer:

Explanation:

9 x 6 =

Use a 3’s fact with 9 and double the product

9 x 3 = 27

27 + 27 = 54

So, 9 x 6 = 54.

**I’m in a Learning Mindset!**

What strategies did I use to organize the information for Spark Your Learning?

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