McGraw Hill Math Grade 5 Chapter 3 Lesson 7 Answer Key Multiplying and Dividing by Powers of Ten

All the solutions provided in McGraw Hill Math Grade 5 Answer Key PDF Chapter 3 Lesson 7 Multiplying and Dividing by Powers of Ten are as per the latest syllabus guidelines.

McGraw-Hill Math Grade 5 Answer Key Chapter 3 Lesson 7 Multiplying and Dividing by Powers of Ten

Multiply or divide by a power of ten.

Question 1.
49 × 103 = 49 × (10 × 10 × 10)
49 × 1000 = 49000

Question 2.
49 × 102 = 49 × (_____)
49 × 100 = 4900
49 × 102 = 4900.

Explanation:
Given the expression is 49 × 102 which is
= 49 × 10 × 10
= 4900.

Question 3.
525 ÷ 101 = 525 ÷ ____
$$\frac{525}{10}$$ = ____
525 ÷ 101 = 52.5.

Explanation:
Given the expression is 525 ÷ 101 which is
= 525 ÷ 10
= 52.5.

Question 4.
525 ÷ 103 = 525 ÷ (_____)
$$\frac{525}{1000}$$ = ____
525 ÷ 103 = 0.525.

Explanation:
Given the expression is 525 ÷ 103 which is
= 525 ÷ 10 × 10 × 10
= 525 ÷ 1000
= 0.525.

Question 5.
1024 ÷ 103 = _____
1024 ÷ 103 = 1.024.

Explanation:
Given the expression is 1024 ÷ 103 which is
= 1024 ÷ 10 × 10 × 10
= 1024 ÷ 1000
= 1.024.

Question 6.
1776 ÷ 102 = _____
1776 ÷ 102 = 17.76.

Explanation:
Given the expression is 1776 ÷ 102 which is
= 1776 ÷ 10 × 10
= 1776 ÷ 100
= 17.76

Question 7.
225 ÷ 101 = _____
225 ÷ 101 = 22.5.

Explanation:
Given the expression is 225 ÷ 101 which is
= 225 ÷ 10
= 22.5.

Write the missing word or phrase.

Question 8.
When you multiply by a power of ten, the ____________________ to the right of the 10 tells you how many times to multiply by 10. As the number becomes 10 times greater, the decimal point ___________