Percents, Percents, Percents!!

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of 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 * 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

How do you find the percent increase?

Back

Percent Increase = ((New Value - Old Value) / Old Value) * 100. For example, if enrollment increased from 200 to 250, the percent increase is ((250 - 200) / 200) * 100 = 25%.

Front

What is the percent decrease formula?

Back

Percent Decrease = ((Old Value - New Value) / Old Value) * 100. For example, if a price drops from $50 to $40, the percent decrease is ((50 - 40) / 50) * 100 = 20%.

Front

What is 5% of 200?

Back

5% of 200 is 10.

Front

What is 75% of 80?

Back

75% of 80 is 60.

Front

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

Back

The number is 50.

Front

What is 19% of 200?

Back

19% of 200 is 38.

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, 1/4 = (1 ÷ 4) * 100 = 25%.