Unit Rates

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity of one item by the number of units of another item. For example, if you have 60 miles driven in 2 hours, the unit rate is 60 miles ÷ 2 hours = 30 miles per hour.

Front

If a box of 12 cookies costs $3.00, what is the unit rate per cookie?

Back

$3.00 ÷ 12 cookies = $0.25 per cookie.

Front

What is the unit rate of 240 calories in 4 servings?

Back

240 calories ÷ 4 servings = 60 calories per serving.

Front

If a car travels 300 miles in 5 hours, what is the speed in miles per hour?

Back

300 miles ÷ 5 hours = 60 miles per hour.

Front

How do you find the price per item when given the total cost and quantity?

Back

Divide the total cost by the quantity of items. For example, if 10 notebooks cost $20, the price per notebook is $20 ÷ 10 = $2.

Front

If a recipe requires 3 cups of flour for 12 cookies, how much flour is needed for 1 cookie?

Back

3 cups ÷ 12 cookies = 0.25 cups of flour per cookie.

Front

What is the unit rate of 150 miles in 3 gallons of gas?

Back

150 miles ÷ 3 gallons = 50 miles per gallon.

Front

If a person earns $120 for 8 hours of work, what is their hourly wage?

Back

$120 ÷ 8 hours = $15 per hour.

Front

How do you express a unit rate as a fraction?

Back

A unit rate can be expressed as a fraction where the numerator is the quantity of interest and the denominator is the unit. For example, 50 miles per hour can be written as 50/1.