Percentages

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is often used to compare proportions.

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 50, calculate 50 x 0.20 = 10.

Front

What does it mean if 15 is 75% of a number?

Back

It means that 15 is three-quarters of that number. To find the number, divide 15 by 0.75.

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 18 is of 24, calculate (18/24) x 100 = 75%.

Front

What is 40% of 25?

Back

40% of 25 is 10.

Front

If 13 is 20% of a number, what is that number?

Back

The number is 65.

Front

What is the formula to find the percentage increase?

Back

Percentage increase = ((New Value - Original Value) / Original Value) x 100.

Front

What is the formula to find the percentage decrease?

Back

Percentage decrease = ((Original Value - New Value) / Original Value) x 100.

Front

If 12 is what percent of 36, how do you find the answer?

Back

To find the percent, divide 12 by 36 and multiply by 100. (12/36) x 100 = 33%.

Front

What is the relationship between fractions and percentages?

Back

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