Percents Unit Review

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 75, calculate 75 x 0.20 = 15.

Front

What is the formula to find the percent of a total?

Back

The formula is: (Part / Whole) x 100 = Percent.

Front

How do you find the sale price after a discount?

Back

To find the sale price, subtract the discount amount from the original price. Discount amount = Original Price x Discount Percentage.

Front

What is sales tax?

Back

Sales tax is a percentage added to the price of goods and services, collected by the seller and paid to the government.

Front

How do you calculate sales tax?

Back

To calculate sales tax, multiply the original price by the sales tax rate (in decimal form).

Front

What is the formula to find the original price before a discount?

Back

The formula is: Original Price = Sale Price / (1 - Discount Rate).

Front

If 96 out of 160 students donated, how do you find the percentage?

Back

Use the formula: (96 / 160) x 100 = 60%.

Front

What does '30% off' mean?

Back

'30% off' means that the price is reduced by 30% of the original price.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100.