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 a quantity of one. For example, if you buy 5 apples for $10, the unit rate is $2 per apple.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the total quantity by the number of units. For example, if you have 120 customers in 6 hours, the unit rate is 120 ÷ 6 = 20 customers per hour.

Front

If you spend $40 on 5 pounds of concrete, what is the unit rate in dollars per pound?

Back

$8 per pound.

Front

A store has 120 customers in 6 hours. What is the unit rate in customers per hour?

Back

20 customers per hour.

Front

What is the better deal: 8 packs of paper for $6.40 or 3 packs of paper for $2.55?

Back

8 packs of paper for $6.40.

Front

How do you find the cost per pound of an item?

Back

To find the cost per pound, divide the total cost by the weight in pounds. For example, if a 20-lb bag costs $23.44, the cost per pound is $23.44 ÷ 20 = $1.17.

Front

Which size bag has the lowest cost per pound: 20-lb bag for $23.44, 8-lb bag for $9.88, or 40-lb bag for $49.00?

Back

The 20-lb bag.

Front

What is the formula for calculating unit rates?

Back

Unit Rate = Total Quantity ÷ Number of Units.

Front

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

Back

60 miles per hour.

Front

What does it mean if a unit rate is lower?

Back

A lower unit rate means a better deal or lower cost per unit.