# McGraw Hill My Math Grade 5 Chapter 2 Answer Key Multiply Whole Numbers

All the solutions provided in McGraw Hill My Math Grade 5 Answer Key PDF Chapter 2 Multiply Whole Numbers will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 5 Answer Key Chapter 2 Multiply Whole Numbers

Essential Question
What strategies can be used to multiply whole numbers?

Write all of the factors of each number.

Question 1.
8 ___, ___, ___, ___
1, 2, 4, 8

Explanation:
The factors of the given number are 1, 2, 4, and 8.

Question 2.
11 ____, ____
1, 11

Explanation:
The factors of the given number are 1, 11.

Question 3.
6 ___, ___, ___, ___
1, 2. 3, 6

Explanation:
The factors of the given number are 1, 2, 3, and 6.

Question 4.
15 ___, ___, ___, ____
1, 3, 5, 15

Explanation:
The factors of the given number are 1, 3, 5, and 15.

Question 5.
32, ___, ___, ___, ___, ___, ___
1, 2, 4, 8, 16, 32

Explanation:
The factors of the given number are 1, 2, 4, 8, 16, and 32.

Question 6.
10, ___, ___, ___, ____
1, 2, 5, 10

Explanation:
The factors of the given number are 1, 2, 5, and 10.

Write each repeated addition sentence as a multiplication sentence.

Question 7.
5 + 5 + 5 + 5 = 20
__________
5 × 4 = 20

Explanation:
The repeated addition sentence as a multiplication sentence is 5 × 4 = 20

Question 8.
8 + 8 + 8 = 24
3 × 8 = 24

Explanation:
The repeated addition sentence as a multiplication sentence is 3 × 8 = 24

Question 9.
21 + 21 = 42
__________
21 × 2 = 42

Explanation:
The repeated addition sentence as a multiplication sentence is 21 × 2 = 42

Question 10.
6 + 6 + 6 + 6 + 6 = 30
5 × 6 = 30

Explanation:
The repeated addition sentence as a multiplication sentence is 5 × 6 = 30

Question 11.
13 + 13 + 13 = 39
13 × 3 = 39

Explanation:
The repeated addition sentence as a multiplication sentence is 13 × 3 = 39

Question 12.
7 + 7 + 7 + 7 + 7 + 7 = 42
7 × 6 = 42

Explanation:
The repeated addition sentence as a multiplication sentence is 7 × 6 = 42.

Multiply.

Question 13.
6 × 3 = ___
18

Question 14.
1 × 8 = ___
8

Question 15.
7 × 8 = ___
56

Question 16.
4 × 10 = ___
40

Question 17.
Nikki purchased three used books at a garage sale for $5 each. Find the total cost for all three books. Answer:$15

Explanation:
Nikki purchased three used books at a garage sale for $5 each. Each book cost$5
The cost

for three books is 5 × 3
\$15

My Math Words

Review Vocabulary

composite numbers prime numbers

Making Connections
Complete the chart below using the review words.

Explain how you decided to categorize each set of numbers.
____________________________
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My Vocabulary Cards

Ideas for Use

• Work with a partner to name the parts of speech of each word. Consult a dictionary to check your answers.
• Write a tally mark on each card every time you read the word in this chapter or use it in your writing. Try to use at least 2 to 3 tally marks for each card.

Numbers in a problem that are easy to work with mentally.

To multiply a sum by a number, multiply each addend by the number, and add the products.
How can the meaning of the verb distribute help you remember this property?

A number obtained by raising a base number to an exponent
Add a suffix to power to form a new ward.

In a power, the number used as a factor.
Consult a dictionary to find another math-related definition of base. Describe that meaning in your own words.

A number raised to the third power.
Consult a dictionary to describe how cube used in geometry. Write that meaning.

In a power, the number of times the base is used as a factor.
What suffix can you add to exponent to make a word meaning growing or increasing very rapidly”? Name the word.

A number like 10, 100, 1,000 and so on. It is the result of using only 10 as a factor.
Is the number 30 a power of 10? Explain.
__________________

My Vocabulary Cards

Ideas for Use

• Use the back of the card to write or draw examples to help you answer the question.
• Use the blank cards to write notes about important concepts in this chapter, such as how powers of 10 apply to multiplication patterns.

A number raised to the second power.
Write a sentence using square as a noun.
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__________________

A rule in mathematics that can be applied to all numbers
Write a sentence using property in a non-mathematical way.

My Foldable

Foldables