Percents

Front

What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100. It is denoted by the symbol '%'. For example, 50% means 50 out of 100.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and then multiply the result by 100. For example, 14/20 = (14 ÷ 20) × 100 = 70%.

Front

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

Back

The formula to find a percentage of a number is: (Percentage / 100) × Total Number. For example, to find 30% of 200, calculate (30/100) × 200 = 60.

Front

How do you convert a decimal to a percent?

Back

To convert a decimal to a percent, multiply the decimal by 100. For example, 0.506 × 100 = 50.6%.

Front

What does it mean if 40% of a group are boys?

Back

It means that out of the total group, 40 out of every 100 members are boys. For example, if there are 200 children, then 40% boys means 80 boys.

Front

If Sarah earns $20 a day and spends 30% of it, how much does she spend?

Back

Sarah spends $6. This is calculated by finding 30% of $20: (30/100) × 20 = $6.

Front

How do you calculate the percent grade on a test?

Back

To calculate the percent grade, divide the number of correct answers by the total number of questions and multiply by 100. For example, if Shirley got 12 out of 15 correct, her grade is (12/15) × 100 = 80%.

Front

What is the relationship between fractions, decimals, and percents?

Back

Fractions, decimals, and percents are different ways to represent the same value. For example, 1/2 = 0.5 = 50%.

Front

How do you find what percent one number is of another?

Back

To find what percent one number is of another, divide the first number by the second number and multiply by 100. For example, to find what percent 30 is of 200: (30/200) × 100 = 15%.

Front

What is 75% of 80?

Back

75% of 80 is 60. This is calculated by (75/100) × 80 = 60.