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 can buy 3 apples for $6, 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 spend $40 on 5 pounds of concrete, the unit rate is $40 ÷ 5 = $8 per pound.

Front

If 150 grams of fertilizer is needed for 6 acres, how much is needed per acre?

Back

To find the unit rate per acre, divide 150 grams by 6 acres: 150 ÷ 6 = 25 grams per acre.

Front

How do you find the total amount needed using a unit rate?

Back

Multiply the unit rate by the total number of units. For example, if the unit rate is 25 grams per acre and you need it for 13 acres, then 25 × 13 = 325 grams.

Front

What is the unit rate of $40 for 5 pounds of concrete?

Back

The unit rate is $8 per pound.

Front

How do you find the price per item when given the total price and number of items?

Back

Divide the total price by the number of items. For example, if 4 concert tickets cost $148, the price per ticket is $148 ÷ 4 = $37.

Front

What is the price per ticket if 4 tickets cost $148?

Back

The price per ticket is $37.

Front

If Peter paid $79.80 for 6 hours of bike rental, how do you find the rate per hour?

Back

Divide the total cost by the number of hours: $79.80 ÷ 6 = $13.30 per hour.

Front

What is the rate per hour for renting a bike if the total cost is $79.80 for 6 hours?

Back

The rate per hour is $13.30.

Front

If Ashley's car runs 65 miles per hour, how far will it go in 5 hours?

Back

To find the distance, multiply the speed by the time: 65 miles/hour × 5 hours = 325 miles.