Percent Proportions

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 the percent of a number?

Back

To calculate the 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 the formula to find what percent one number is of another?

Back

The formula is: (Part/Whole) * 100. For example, to find what percent 3 is of 29, calculate (3/29) * 100.

Front

If 45% of a number is 22.5, what is the number?

Back

To find the number, divide 22.5 by 0.45. The number is 50.

Front

What percent of 20 is 8?

Back

To find this, use the formula: (8/20) * 100 = 40%.

Front

If 20% of a number is 10, what is the number?

Back

To find the number, divide 10 by 0.20. The number is 50.

Front

What is the relationship between fractions and percents?

Back

Percents are a specific type of fraction where the denominator is always 100. For example, 25% is equivalent to 25/100.

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 multiply by 100. For example, 1/4 = (1 ÷ 4) * 100 = 25%.

Front

What percent of 50 is 20?

Back

To find this, use the formula: (20/50) * 100 = 40%.

Front

If a theater has 250 seats and 225 are sold, how many seats are empty?

Back

There are 250 - 225 = 25 seats empty.