Multiplying and Dividing by Powers of 10

Front

What is a power of 10?

Back

A power of 10 is a number that can be expressed as 10 raised to an exponent, indicating how many times to multiply 10 by itself.

Front

How do you multiply a number by 10?

Back

To multiply a number by 10, move the decimal point one place to the right.

Front

How do you divide a number by 10?

Back

To divide a number by 10, move the decimal point one place to the left.

Front

What happens when you multiply by 10²?

Back

When you multiply by 10², you move the decimal point two places to the right.

Front

What happens when you divide by 10²?

Back

When you divide by 10², you move the decimal point two places to the left.

Front

What is 5 x 10³?

Back

5 x 10³ = 5,000.

Front

What is 7.2 x 10²?

Back

7.2 x 10² = 720.

Front

What is 0.4 x 10⁴?

Back

0.4 x 10⁴ = 4,000.

Front

How do you express 34,000 in terms of powers of 10?

Back

34,000 can be expressed as 34 x 10³.

Front

What is the cost of 1 potato if 10 potatoes cost $5.50?

Back

The cost of 1 potato is $0.55.