Percentages

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It represents how many parts out of 100 are being considered.

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 does it mean to find 'X is what percent of Y'?

Back

To find 'X is what percent of Y', divide X by Y and then multiply by 100. For example, to find what percent 12 is of 20, calculate (12/20) x 100 = 60%.

Front

What is 50% of a number?

Back

50% of a number is half of that number. For example, 50% of 40 is 20.

Front

What is 25% of a number?

Back

25% of a number is one quarter of that number. For example, 25% of 40 is 10.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the top number (numerator) by the bottom number (denominator) and multiply by 100. For example, 1/4 = (1 ÷ 4) x 100 = 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 20 is 50% of a number, the number is 20 ÷ 0.5 = 40.

Front

What is 75% of 90?

Back

75% of 90 is 67.5.

Front

If 12 is 33% of a number, what is the number?

Back

If 12 is 33% of a number, the number is 12 ÷ 0.33 ≈ 36.

Front

What is the relationship between percentages and decimals?

Back

Percentages can be converted to decimals by dividing by 100. For example, 60% = 60 ÷ 100 = 0.6.