Percent of a Quantity

Front

What is a percent?

Back

A percent is a way to express a number as a fraction of 100. It is often used to compare quantities.

Front

How do you find a percent of a quantity?

Back

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

Front

What is 50% of a number?

Back

50% of a number is half of that number. For example, 50% of 80 is 40.

Front

What is 100% of a number?

Back

100% of a number is the number itself. For example, 100% of 30 is 30.

Front

How do you convert a percent to a decimal?

Back

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

Front

What is 25% of 200?

Back

25% of 200 is 50.

Front

What is 10% of a number?

Back

10% of a number is one-tenth of that number. For example, 10% of 90 is 9.

Front

How do you find 75% of a quantity?

Back

To find 75% of a quantity, multiply the quantity by 0.75. For example, 75% of 40 is 30.

Front

What is 80% of 25?

Back

80% of 25 is 20.

Front

How do you find the total when given a percent?

Back

To find the total when given a percent, divide the part by the percent (in decimal form). For example, if 20 is 40% of a number, the total is 20 / 0.40 = 50.