Review for 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 the total cost including sales tax?

Back

To calculate the total cost including sales tax, multiply the original price by the sales tax rate (as a decimal) and then add that amount to the original price.

Front

If a shirt costs $30 and there is a 10% sales tax, what is the total cost?

Back

$33

Front

What does it mean when a percentage is used to describe a part of a whole?

Back

It means that the percentage represents how many parts out of 100 are being considered. For example, 25% means 25 out of 100.

Front

How do you find a percentage of a number?

Back

To find a percentage of a number, convert the percentage to a decimal and multiply it by the number. For example, to find 25% of 40, calculate 0.25 * 40 = 10.

Front

What is the formula to calculate the discount on an item?

Back

The formula to calculate the discount is: Discount = Original Price x Discount Rate (as a decimal).

Front

If a dress originally costs $80 and is on a 25% discount, how much do you pay?

Back

$60

Front

What is depreciation in terms of value?

Back

Depreciation is the reduction in the value of an asset over time, often due to wear and tear or obsolescence.

Front

How do you calculate the value of an item after depreciation?

Back

To calculate the value after depreciation, subtract the depreciation amount from the original value. Depreciation amount = Original Value x Depreciation Rate (as a decimal).

Front

If a car is worth $20,000 and depreciates by 15% in one year, what is its value after one year?

Back

$17,000