Percents of Numbers

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate a percent of a number?

Back

To calculate a percent of a number, multiply the number by the percent (in decimal form). For example, to find 20% of 50, calculate 50 * 0.20 = 10.

Front

What is 90% of 50?

Back

45

Front

What is 8% of 70?

Back

5.6

Front

What is 49% of 15?

Back

7.5

Front

What is 60% of 20?

Back

12

Front

What is 25% as a fraction?

Back

1/4

Front

How do you convert a percent to a decimal?

Back

To convert a percent to a decimal, divide by 100. For example, 25% becomes 0.25.

Front

What is the relationship between fractions and percents?

Back

Fractions can be converted to percents by multiplying by 100. For example, 1/4 = 0.25 = 25%.

Front

If you have 100 apples and give away 20%, how many apples do you have left?

Back

You have 80 apples left.