4-4 Percentage Practice

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is often used to compare proportions.

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 is the formula to find the discount amount?

Back

Discount Amount = Original Price x Discount Rate (in decimal form).

Front

If a pair of shoes costs $80 and is discounted by 20%, what is the final price?

Back

Final Price = Original Price - Discount Amount. Discount Amount = $80 x 0.20 = $16. Final Price = $80 - $16 = $64.

Front

What is 9% of 200?

Back

9% of 200 = 200 x 0.09 = 18.

Front

How do you find the total number of students who prefer pizza if 28% of 250 students prefer it?

Back

Total Students Preferring Pizza = Total Students x Percentage (in decimal form). 250 x 0.28 = 70.

Front

What is 35% of 110?

Back

35% of 110 = 110 x 0.35 = 38.5.

Front

If the regular price of a jacket is $62.00 and the discount rate is 15%, how much is the discount?

Back

Discount Amount = $62.00 x 0.15 = $9.30.

Front

What does it mean if something is discounted by 20%?

Back

It means that the price is reduced by 20% of its original price.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 25% = 25 ÷ 100 = 0.25.