Percent Proportions

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents how much of something there is out of a total of 100.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 20% of 75, calculate 75 x 0.20 = 15.

Front

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

Back

The formula is: (Part / Total) x 100 = Percent.

Front

If a student answers 18 questions correctly out of 25, what percent did they get correct?

Back

(18 / 25) x 100 = 72%.

Front

What is 30% of $20?

Back

$20 x 0.30 = $6.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the top number (numerator) by the bottom number (denominator) and then multiply by 100.

Front

What is 48% of 50?

Back

(48 / 100) x 50 = 24.

Front

If a quiz has 15 questions and a student answers 12 correctly, what percent did they score?

Back

(12 / 15) x 100 = 80%.

Front

What does it mean to spend a percentage of earnings?

Back

It means to calculate how much money is spent based on a portion of total earnings. For example, spending 30% of $20 means spending $6.

Front

How do you find the total from a percentage?

Back

To find the total from a percentage, divide the part by the percentage (in decimal form). For example, if 15 is 20%, the total is 15 / 0.20 = 75.