Percent Word Problems and Expressions

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 quantities.

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 '20% off' mean?

Back

'20% off' means that the price is reduced by 20% of the original price. For example, if an item costs $100, a 20% discount means you pay $80.

Front

How do you find the sale price after a discount?

Back

To find the sale price after a discount, subtract the discount amount from the original price. Sale Price = Original Price - Discount.

Front

What is the formula to calculate a salary increase?

Back

New Salary = Current Salary + (Current Salary x Percentage Increase).

Front

If a shirt costs $40 and is on sale for 25% off, what is the sale price?

Back

Sale Price = $40 - ($40 x 0.25) = $30.

Front

What is the relationship between percentages and fractions?

Back

Percentages can be converted to fractions by placing the percentage over 100 and simplifying. For example, 25% = 25/100 = 1/4.

Front

What is 12% of 50?

Back

12% of 50 = 50 x 0.12 = 6.

Front

How do you express a percentage as a decimal?

Back

To express a percentage as a decimal, divide the percentage by 100. For example, 75% = 75/100 = 0.75.

Front

What is the formula for calculating the original price before a discount?

Back

Original Price = Sale Price / (1 - Discount Rate).