Percentages

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It represents how much of something there is out of a total of 100.

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 70, calculate 70 * 0.20 = 14.

Front

What does it mean to increase a number by a percentage?

Back

Increasing a number by a percentage means to add that percentage of the number to the original number. For example, increasing 90 by 12% means adding 10.8 (which is 12% of 90) to 90.

Front

What is 50% of 86?

Back

43

Front

If you watch Netflix for 4 hours a night, what percent of a 24-hour day does that represent?

Back

16.7% (4 hours is 1/6 of 24 hours, which is approximately 16.67%).

Front

What is the formula to find the commission earned from sales?

Back

Commission = Total Sales × Commission Rate. For example, if the total sales are $37,000 and the commission rate is 17%, the commission earned is $6,290.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 25% as a decimal is 0.25.

Front

What is the relationship between percentages, fractions, and decimals?

Back

Percentages, fractions, and decimals are different ways of expressing the same value. For example, 50% = 0.5 = 1/2.

Front

What is the percentage increase formula?

Back

Percentage Increase = ((New Value - Original Value) / Original Value) × 100.

Front

If a score increases from 90 to 100, what is the percentage increase?

Back

Percentage Increase = ((100 - 90) / 90) × 100 = 11.11%.