Percent Proportion

Front

What is percent proportion?

Back

Percent proportion is a way to express a number as a fraction of 100. It is often used to compare a part to a whole.

Front

How do you calculate the percent of a number?

Back

To calculate the percent of a number, multiply the number by the percent (as a decimal). For example, to find 25% of 200, calculate 200 x 0.25 = 50.

Front

What is the formula for finding 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

If 30% of a number is 60, what is the number?

Back

The number is 200. (60 / 0.30 = 200)

Front

What does it mean if a student scores 80% on a test?

Back

It means the student answered 80 out of every 100 questions correctly, or 80% of the total questions.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, 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 50% of 80?

Back

50% of 80 is 40.

Front

If there are 200 students in a school and 25% are girls, how many girls are there?

Back

There are 50 girls. (200 x 0.25 = 50)

Front

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

Back

Percent = (Part / Whole) x 100. This formula shows how a part relates to the whole in terms of percentage.

Front

How do you find what percent one number is of another?

Back

To find what percent one number is of another, use the formula: (Part / Whole) x 100. For example, to find what percent 30 is of 150, calculate (30 / 150) x 100 = 20%.