Grade 6 | Unit 3 | Lesson 16: Finding the Percentage | Practice Problems

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 the percentage of a quantity?

Back

To calculate the percentage of a quantity, divide the part by the whole and then multiply by 100. Formula: (Part/Whole) x 100.

Front

What is the formula to find the sale price after a discount?

Back

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

Front

If a faucet flows at 4 gallons per minute, how much water flows in 6 minutes?

Back

Water Flowed = Flow Rate x Time = 4 gallons/minute x 6 minutes = 24 gallons.

Front

What percentage of an 80-gallon tub is filled with 24 gallons?

Back

Percentage Filled = (24 gallons / 80 gallons) x 100 = 30%.

Front

How do you convert inches to centimeters?

Back

To convert inches to centimeters, multiply the number of inches by 2.54.

Front

What is 56 inches in centimeters?

Back

56 inches x 2.54 = 142.24 cm.

Front

If an item costs $24.80 and is on sale for 85% of the original price, what is the sale price?

Back

Sale Price = $24.80 x 0.85 = $21.08.

Front

What is the discount amount on an item that costs $18 with a sale price of 85%?

Back

Discount Amount = Original Price - Sale Price = $18 - ($18 x 0.85) = $2.70.

Front

How do you find the original price from the sale price?

Back

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