Powers of 10 Practice

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Part 1: Basic Powers of 10

WALT: Multiply and divide whole numbers by 10, 100, and 1000

Remember: When multiplying by powers of 10, digits move LEFT. When dividing, digits move RIGHT.

1. Calculate these multiplications:

a) 23 × 10 = _______

b) 47 × 100 = _______

c) 8 × 1000 = _______

d) 156 × 10 = _______

2. Calculate these divisions:

a) 340 ÷ 10 = _______

b) 2500 ÷ 100 = _______

c) 7000 ÷ 1000 = _______

d) 8600 ÷ 10 = _______

3. Choose the correct answer for 45 × 100:

450

4500

45000

Part 2: Understanding Digit Movement

4. Complete this pattern and explain what happens to the digits:

6 × 1 = 6

6 × 10 = _______

6 × 100 = _______

6 × 1000 = _______

Explain what happens to the digit 6 in each step:

5. Sarah says "When I divide 4500 by 100, I get 450." Is she correct? Explain your thinking:

Part 3: Word Problems & Extension

6. A school has 10 classrooms. Each classroom has 24 desks. How many desks are there altogether?

7. A factory produces 1000 biscuits per hour. How many biscuits do they produce in 6 hours?

8. Extension: A number multiplied by 100 gives 3600. What was the original number? Show your working:

9. Challenge: Fill in the missing powers of 10:

a) 25 × _______ = 250

b) 8000 ÷ _______ = 8

c) 73 × _______ = 73000

10. Check your answer: Does 15 × 1000 = 1500? Explain how you can tell without calculating:

Powers of 10 Practice

Powers of 10 Practice

Part 1: Basic Powers of 10

Part 2: Understanding Digit Movement

Part 3: Word Problems & Extension

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