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 find a percentage of a number?

Back

To find a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 40% of 230, calculate 230 * 0.40 = 92.

Front

What is the formula to find the total when given a percentage and a part?

Back

The formula is: Total = Part / (Percentage in decimal form). For example, if 51 is 34% of a number, Total = 51 / 0.34 = 150.

Front

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

Back

To calculate what percent one number is of another, use the formula: (Part / Whole) * 100. For example, to find what percent 8 is of 20, calculate (8 / 20) * 100 = 40%.

Front

What does it mean if 90% of seats are sold in a theater?

Back

It means that 90 out of every 100 seats are sold. If there are 250 seats, then 90% sold means 225 seats are sold.

Front

If a team won 75% of its games, how many games did it win if it played 84 games?

Back

To find the number of games won, calculate: 84 * 0.75 = 63 games.

Front

What is the relationship between fractions and percentages?

Back

Fractions can be converted to percentages by multiplying by 100. For example, 1/4 = 0.25 = 25%.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100. For example, 40% = 40 / 100 = 0.40.

Front

What is 40% of 230?

Back

40% of 230 is 92.

Front

If 225 seats are sold out of 250, what percent of the seats are sold?

Back

90% of the seats are sold.