Percents

Front

What is a percent?

Back

A percent is a way to express a number as a fraction of 100. It is often used to compare ratios and express how much of something there is in relation to a whole.

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 50, calculate 50 x 0.20 = 10.

Front

What does it mean to find a percentage increase?

Back

A percentage increase shows how much a value has grown compared to its original amount. It is calculated by taking the difference between the new value and the original value, dividing by the original value, and then multiplying by 100.

Front

What does it mean to find a percentage decrease?

Back

A percentage decrease shows how much a value has decreased compared to its original amount. It is calculated by taking the difference between the original value and the new value, dividing by the original value, and then multiplying by 100.

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 then multiply by 100. For example, 1/4 = 0.25 x 100 = 25%.

Front

If a shirt costs $40 and is on sale for 25% off, how much do you save?

Back

You save $10. (25% of $40 = 0.25 x 40 = $10).

Front

What is the formula to calculate the tip based on a percentage?

Back

To calculate the tip, multiply the total bill amount by the tip percentage (in decimal form). For example, for a $60 bill with a 20% tip, calculate 60 x 0.20 = $12.

Front

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

Back

To find what percent one number is of another, divide the first number by the second number and multiply by 100. For example, to find what percent 15 is of 60, calculate (15/60) x 100 = 25%.

Front

If 30 out of 120 students earned an A, what percent earned an A?

Back

25%. (30/120) x 100 = 25%.

Front

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

Back

Fractions, decimals, and percents are different ways to represent the same concept of a part of a whole. They can be converted from one form to another.