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

Back

The formula is: Whole = Part / (Percent / 100). For example, if 25 is 20% of a number, the whole is 25 / 0.20 = 125.

Front

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

Back

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

Front

If 30% of a number is 90, what is the number?

Back

The number is 300. (90 / 0.30 = 300)

Front

What is 50% of 200?

Back

100

Front

If a student answered 15 out of 20 questions correctly, what percent did they get right?

Back

75% (15 / 20 x 100 = 75)

Front

What is 10% of 500?

Back

50

Front

If 80 is 40% of a number, what is the number?

Back

200 (80 / 0.40 = 200)

Front

What is the percentage of 25 out of 200?

Back

12.5% (25 / 200 x 100 = 12.5)