Part Whole Percent

Front

What is a percent?

Back

A percent is a way to express a number as a fraction of 100. It is often used to compare ratios and express how much of something there is in relation to a whole.

Front

How do you calculate a percent of a number?

Back

To calculate a percent of a number, multiply the number by the percent (in decimal form). For example, to find 20% of 50, calculate 50 x 0.20 = 10.

Front

What is the formula to find the part when given the whole and the percent?

Back

The formula is: Part = (Percent / 100) x Whole. For example, to find 30% of 200, calculate (30 / 100) x 200 = 60.

Front

What is the formula to find the whole when given the part and the percent?

Back

The formula is: Whole = Part / (Percent / 100). For example, if you have 25 and it is 50% of a number, the whole is 25 / 0.50 = 50.

Front

What is the relationship between part, whole, and percent?

Back

The relationship is defined by the formulas: Percent = (Part / Whole) x 100 and Part = (Percent / 100) x Whole.

Front

If 50% of a number is 30, what is the number?

Back

The number is 60. (30 / 0.50 = 60)

Front

What percent of 200 is 28?

Back

14%.

Front

What is 14% of 80?

Back

11.2.

Front

Greg answered 9 out of 12 questions correctly. What percent did he score?

Back

75%.

Front

29 out of 50 is what percent?

Back

58%.