Finding 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. It is often written as 'per' one thing.

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total quantity of one item by the total quantity of another item. For example, if you have 36 cookies for $4, the unit rate is 36 cookies ÷ 4 dollars = 9 cookies per dollar.

Front

If you can buy 36 cookies for $4, what is the unit rate in cookies per dollar?

Back

9 cookies per dollar.

Front

What must be true about a unit rate?

Back

It is always 'per' one thing.

Front

Elijah earns $200 for 8 hours of work. What is his unit rate in dollars per hour?

Back

$25 per hour.

Front

Alycia earned $20.40 in 3 hours. What is her unit rate in dollars per hour?

Back

$6.80 per hour.

Front

Joshua can walk 6 km in 85 minutes. What is his unit rate in km per minute?

Back

6/85 km per minute.

Front

What is the unit rate of 50 miles in 2 hours?

Back

25 miles per hour.

Front

If a car travels 300 miles on 10 gallons of gas, what is the unit rate in miles per gallon?

Back

30 miles per gallon.

Front

How do you express a unit rate as a fraction?

Back

A unit rate can be expressed as a fraction by placing the quantity of one item in the numerator and the quantity of the other item in the denominator.