Unit Rate Test

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 a car travels 100 miles in 2 hours, the unit rate is 50 miles per hour.

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the first quantity by the second quantity. For example, if you read 30 pages in 15 minutes, the unit rate is 30 pages ÷ 15 minutes = 2 pages per minute.

Front

If Ernie travels 195 miles in 3 hours, how far will he travel in 5 hours at the same speed?

Back

325 miles. (First, find the speed: 195 miles ÷ 3 hours = 65 miles/hour. Then, multiply by 5 hours: 65 miles/hour × 5 hours = 325 miles.)

Front

What is the unit price of Sargento cheese slices if they cost $2.48 for 10 slices?

Back

$0.248 per slice. (Divide the total cost by the number of slices: $2.48 ÷ 10 slices = $0.248 per slice.)

Front

How much tea does Ben drink per hour if he drinks 1/2 liter every 2/3 of an hour?

Back

3/4 of a liter per hour. (To find the rate per hour, multiply the amount by the reciprocal of the time: 1/2 liter ÷ (2/3 hour) = 1/2 × 3/2 = 3/4 liter/hour.)

Front

Which of the following is a unit rate: 100 miles / 3 hours, 35 miles / 1 hour, or 70 miles / 2 hours?

Back

35 miles / 1 hour. (A unit rate has a denominator of 1.)

Front

What is the unit rate in pages per minute if a person can read 30 pages in 15 minutes?

Back

2 pages per minute. (30 pages ÷ 15 minutes = 2 pages/minute.)

Front

If a car travels 240 miles in 4 hours, what is the speed in miles per hour?

Back

60 miles per hour. (240 miles ÷ 4 hours = 60 miles/hour.)

Front

How do you compare unit prices to find the better deal?

Back

Calculate the unit price for each option and compare them. The option with the lower unit price is the better deal.

Front

What is the formula for finding the unit rate?

Back

Unit Rate = Total Quantity ÷ Total Time or Total Cost.