All the solutions provided in **McGraw Hill My Math Grade 3 Answer Key PDF Chapter 4 Understand Multiplication** will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 3 Answer Key Chapter 4 Understand Multiplication

**Essential Question?**

What does multiplication mean?

**Am I Ready?**

**Find each sum.**

Question 1.

2 + 2 + 2 + 2 = ____

Answer:

8

Explanation:

4 groups of 2

Four times 2 is

4 x 2

4 x 2 = 8

So, 2 + 2 + 2 + 2 = 8.

Question 2.

4 + 4 = ____

Answer:

8

Explanation:

2 groups of 4

2 times 4 is

2 x 4

2 x 4 = 8

So, 4 + 4 = 8.

Question 3.

5 + 5 + 5 = ____

Answer:

15

Explanation:

3 groups of 5

3 times 5

3 x 5

3 x 5 = 15

So, 5 + 5 + 5 = 15.

Question 4.

10 + 10 + 10 + 10 = ____

Answer:

40

Explanation:

4 groups of 10

4 times 10

4 x 10

4 x 10 = 40

So, 10 + 10 + 10 + 10 = 40.

Question 5.

0 + 0 + 0 = ____

Answer:

0

Explanation:

3 groups of 0

3 times 0

3 x 0

3 x 0 = 0

Anything multiplied by 0 will be 0

So, 0 + 0 + 0 = 0.

Question 6.

1 + 1 + 1 = ____

Answer:

3

Explanation:

3 groups of 1

3 times 1

3 x 1

3 x 1 = 3

So, 1 + 1 + 1 = 3.

**Write an addition sentence for each picture.**

Question 7.

____ + ____ + ____ = ____

Answer:

5 + 5 + 5 = 15

Explanation:

They are 3 groups

Each group has 5 triangles

3 groups of 5

3 x 5

3 x 5 = 15

So, 5 + 5 + 5 = 15.

Question 8.

____ + ____ + ____ = ____

Answer:

4 + 4 + 4 = 12

Explanation:

There are 3 groups

Each group has 4 hearts

3 groups of 4

3 times 4

3 x 4

3 x 4 = 12

So, 4 + 4 + 4 = 12.

**Solve. Use repeated addition.**

Question 9.

Larisa has 2 cups with 4 crackers in each cup. How many crackers does she have in all?

____ crackers

Answer:

8 crackers

Explanation:

Larisa has 2 cups

4 crackers in each cup

There are 2 groups

Each group has 4 crackers

2 groups of 4

2 times 4

2 x 4

2 x 4 = 8

So, Larisa has 8 crackers in all.

Question 10.

On Monday and Tuesday, Lance rode his bike around the block 3 times each day. How many times in all did he ride his bike around the block?

____ times

Answer:

6 times

Explanation:

On Monday and Tuesday

Lance rode his bike around the block 3 times each day

2 days 3 times

2 groups of 3

2 time s3

2 x 3

2 x 3 = 6

So, Lance rode his bike 6 times around the block.

**My Math Words**

**Review Vocabulary**

number sentence repeated addition sum

**Making Connections**

Use the review words to label each example of addition in the graphic organizer. Use the second column to draw an example of the addition.

Answer:

Explanation:

I labeled each example of addition with their names

I drew to show the addition sentences.

**My Vocabulary Cards**

**Ideas for Use**

- Group two or three related words. Add an unrelated word. Have another student identify which word is unrelated.
- Find pictures to show some of the words. Have a friend guess which word each picture shows.

A new set that has one item from each group of items.

What is the root word in combination? Write two other words using this root and different suffixes.

Answer:

Combine

Explanation:

The word combine means joining two things to make a new thing.

Groups with the same number of objects.

Draw an example of 4 equal groups.

Answer:

Explanation:

I drew to show an example of 4 equal groups with 3 objects in each row.

A number sentence using the × sign.

Write an example of a multiplication sentence. Then write the sentence using words.

Answer:

5 x 4 = 20

Five multiplied by four equals twenty.

Explanation:

5 x 4 = 20 is an example of a multiplication sentence

The sentence in words is Five multiplied by four equals twenty.

The answer to a multiplication problem.

Write a number sentence with a product of 6.

Answer:

Answer to a multiplication problem is called as product

2 x 3 = 6

Explanation:

In the multiplication sentence 2 x 3 = 6, 6 is the product.

Objects or symbols displayed in rows of the same length and columns of the same length.

Disarray means “not orderly.” Write the prefix in disarray and its meaning.

Answer:

Dis is prefix of the word Disarray

Meaning of Dis is not.

Explanation:

Objects or symbols displayed in rows of the same length and columns of the same length is called an array.

The property that states that the order in which two numbers are multiplied does not change the product.

What part of the word commutative means “to go back and forth”?

Answer:

Mutative

Explanation:

The mutative means change that is “to go back and forth”.

A number that divides a whole number evenly. Also a number that is multiplied by another number.

Write a new word you can make from factor. Include the definition.

Answer:

Fact

Explanation:

A new word that we can make from factor is a fact

The multiplication table might be called “math facts”.

An operation on two numbers to find their product.

Write the root word of multiplication.

Answer:

Multiply

Explanation:

The word multiply means increase in number.

**My Vocabulary Cards**

Answers:

Ideas for Use

- Group two or three related words. Add an unrelated word. Have another student identify which word is unrelated.
- Find pictures to show some of the words. Have a friend guess which word each picture shows.
- Use the blank cards to write your own vocabulary cards.

A diagram of all the possible outcomes of an event or series of events or experiments.

Explain how a tree diagram is like a tree.

Answer:

Explanation:

A tree diagram is a new management planning tool that depicts the hierarchy of tasks and subtasks needed to complete and objective. The tree diagram** **starts with one item that branches into two or more, each of which branch into two or more, and so on. The finished diagram** **bears a** **resemblance to a tree, with a** **trunk and multiple branches

I drew pictures to show the vocabulary words

I wrote few vocabulary words on the given cards.

**My Foldables**

Foldables Follow the steps on the back to make your Foldable.

**Foldables**

**Study Organizer**