Percent of a Number

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 50% of a number?

Back

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

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What does it mean to find 75% of a number?

Back

Finding 75% of a number means calculating three-quarters of that number. For example, 75% of 200 is 150.

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 10% of 300?

Back

10% of 300 is 30.

Front

If 40% of a class of 30 students are girls, how many girls are there?

Back

There are 12 girls in the class (30 * 0.40 = 12).

Front

What is 90% of 250?

Back

90% of 250 is 225.

Front

How do you find 120% of a number?

Back

To find 120% of a number, first convert 120% to decimal (1.20) and then multiply by the number. For example, 120% of 50 is 60.

Front

What is the formula to find the percent of a number?

Back

The formula is: Percent = (Part/Whole) * 100.