Percent Proportions

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents how many parts out of 100 something is.

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 75, calculate 75 x 0.20 = 15.

Front

What is the formula to find the percent of a part compared to a whole?

Back

The formula is: (Part/Whole) x 100 = Percent.

Front

If 48% of a total is 24, what is the total?

Back

To find the total, divide the part by the percent in decimal form: Total = Part / (Percent/100). So, Total = 24 / 0.48 = 50.

Front

What is 20% of 75?

Back

20% of 75 is 15.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100. For example, 3/4 = (3 ÷ 4) x 100 = 75%.

Front

What percent is 15 out of 25?

Back

15 out of 25 is 60%.

Front

If Brian ate 3 granola bars and that is 25% of the total, how many granola bars are in the box?

Back

There are 12 granola bars in the box.

Front

What percent grade did Shirley get if she spelled 12 out of 15 words correctly?

Back

Shirley got an 80% grade.

Front

How do you find the part when you know the percent and the whole?

Back

To find the part, multiply the whole by the percent (in decimal form). For example, to find 30% of 200, calculate 200 x 0.30 = 60.