Unit Rates

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as one unit. For example, if you travel 60 miles in 2 hours, the unit rate is 30 miles per hour.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity by the number of units. For example, if you have 12 apples for $3, the unit rate is $3 ÷ 12 apples = $0.25 per apple.

Front

If a car travels 150 miles in 3 hours, what is the speed in miles per hour?

Back

50 miles per hour (150 miles ÷ 3 hours = 50 mph).

Front

If a recipe calls for 4 cups of flour to make 8 cookies, what is the unit rate of flour per cookie?

Back

0.5 cups of flour per cookie (4 cups ÷ 8 cookies = 0.5 cups per cookie).

Front

What is the unit price of an item?

Back

The unit price is the cost per single unit of measure, often used to compare prices of different sizes or quantities.

Front

If a store sells 5 pounds of apples for $10, what is the price per pound?

Back

$2 per pound ($10 ÷ 5 pounds = $2 per pound).

Front

How do you determine who got the better deal when comparing prices?

Back

To determine who got the better deal, compare the unit prices of the items. The lower unit price indicates a better deal.

Front

If a person earns $120 for 10 hours of work, what is their hourly wage?

Back

$12 per hour ($120 ÷ 10 hours = $12 per hour).

Front

What is the formula for calculating miles per gallon (mpg)?

Back

Miles per gallon (mpg) = Total miles driven ÷ Total gallons of gas used.

Front

If a bike can travel 24 miles on 1 gallon of gas, what is its fuel efficiency in miles per gallon?

Back

24 miles per gallon.