Rates and Unit Rates

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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 earn $18 for 1 hour of work, the unit rate is $18 per hour.

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How do you calculate a unit rate?

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To calculate a unit rate, divide the total quantity by the number of units. For example, if you wash 95 cars in 5 days, the unit rate is 95 cars ÷ 5 days = 19 cars per day.

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What is the unit rate if Mr. Keys made $90 in 5 hours?

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$18 per hour.

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If Julie makes $36 for three hours, what is her hourly rate?

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$12 per hour.

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CCSS.6.RP.A.1

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What is the difference between a rate and a unit rate?

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A rate is a comparison of two quantities with different units, while a unit rate is a rate where the second quantity is 1.

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When are unit rates useful?

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Unit rates are useful when you want to compare prices or quantities to determine the best deal.

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CCSS.6.RP.A.3B

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If Lynnette can wash 95 cars in 5 days, how many cars does she wash each day?

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19 cars per day.

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CCSS.3.OA.A.3

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Back

It is a rate.

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What is the unit rate of 60 miles in 2 hours?

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30 miles per hour.

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How do you express a rate as a unit rate?

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Divide the numerator by the denominator to express the rate as a unit rate.

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CCSS.6.RP.A.1

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