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 buy 3 apples for $6, the unit rate is $2 per apple.

Front

How do you calculate the unit cost per item?

Back

To calculate the unit cost per item, divide the total cost by the number of items. For example, if 15 pizzas cost $97.50, the unit cost per pizza is $97.50 ÷ 15 = $6.50.

Front

What is the unit rate of $3.75 for 3 pounds of granola?

Back

The unit rate is $3.75 ÷ 3 = $1.25 per pound.

Front

What mathematical operation do ratios involve?

Back

Ratios involve division.

Front

How do you convert miles per minute to miles per hour?

Back

To convert miles per minute to miles per hour, multiply the miles per minute by 60. For example, if Maria runs 1.5 miles in 15 minutes, her rate is (1.5 miles ÷ 15 minutes) × 60 = 6 miles per hour.

Front

If a recipe calls for 4 cups of flour to make 2 cakes, what is the unit rate of flour per cake?

Back

The unit rate is 4 cups ÷ 2 cakes = 2 cups of flour per cake.

Front

What is the unit rate of 12 miles in 3 hours?

Back

The unit rate is 12 miles ÷ 3 hours = 4 miles per hour.

Front

If a car travels 150 miles on 5 gallons of gas, what is the unit rate of miles per gallon?

Back

The unit rate is 150 miles ÷ 5 gallons = 30 miles per gallon.

Front

What is the unit cost if 10 notebooks cost $20?

Back

The unit cost is $20 ÷ 10 notebooks = $2 per notebook.

Front

How do you find the unit price of an item?

Back

To find the unit price, divide the total price by the quantity of the item. For example, if 6 bottles of water cost $3, the unit price is $3 ÷ 6 = $0.50 per bottle.