Percent Proportions

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 the percent of a number?

Back

To calculate the percent of a number, multiply the number by the percent (in decimal form) and then divide by 100.

Front

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

Back

Whole = Part / (Percent / 100)

Front

If 25 is 5% of what number, how do you find the number?

Back

Number = 25 / (5 / 100) = 500.

Front

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

Back

Part = (Percent / 100) * Whole.

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.

Front

What percent is 75 of 150?

Back

75 is 50% of 150.

Front

If 90 is 120% of a number, how do you find that number?

Back

Number = 90 / (120 / 100) = 75.

Front

What is the percent increase formula?

Back

Percent Increase = ((New Value - Old Value) / Old Value) * 100.

Front

What is the percent decrease formula?

Back

Percent Decrease = ((Old Value - New Value) / Old Value) * 100.