Percent Word Problems

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 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 360, calculate 360 * 0.20 = 72.

Front

What does it mean if a score is 140% higher than another score?

Back

If a score is 140% higher, it means it is 140% more than the other score. To find the original score, divide the higher score by 2.4 (1 + 1.4).

Front

How do you find the sale price of an item given the original price and the discount percentage?

Back

To find the sale price, subtract the discount amount from the original price. The discount amount is calculated by multiplying the original price by the discount percentage.

Front

What is the formula to calculate sales tax?

Back

Sales Tax = Purchase Price x Sales Tax Rate. To find the total cost, add the sales tax to the purchase price.

Front

If 60% of a group completed a task, how do you find the number of people who completed it?

Back

Multiply the total number of people by 0.60. For example, if there are 35 people, then 35 * 0.60 = 21 people completed the task.

Front

What is the relationship between a part and a whole in percentage problems?

Back

In percentage problems, the part is the portion of the whole that is being considered, and the whole is the total amount.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and then multiply by 100. For example, 1/4 = 0.25 x 100 = 25%.

Front

What does it mean to find a percentage increase?

Back

To find a percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100.

Front

How do you find the original price if you know the sale price and the discount percentage?

Back

To find the original price, divide the sale price by (1 - discount rate). For example, if the sale price is $26 and the discount is 35%, the original price is $26 / 0.65 = $40.