Percentages

Front

What is a percentage?

Back

A percentage is a way of expressing a number 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 25% of 40, calculate 40 x 0.25 = 10.

Front

What is 25% of 40?

Back

10

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 10 is of 40, calculate (10/40) x 100 = 25%.

Front

10 is what percent of 40?

Back

25%.

Front

What is the formula to find the whole number when given a percentage?

Back

To find the whole number when given a percentage, divide the part by the percentage (in decimal form). For example, if 10 is 10%, the whole number is 10 / 0.10 = 100.

Front

10 is 10% of what number?

Back

100.

Front

How do you calculate the percentage of a part compared to a whole?

Back

To calculate the percentage of a part compared to a whole, use the formula: (part/whole) x 100.

Front

12 is what percent of 20?

Back

60%.

Front

What is the relationship between percentages and fractions?

Back

Percentages can be converted to fractions by placing the percentage over 100 and simplifying. For example, 25% = 25/100 = 1/4.