Rates and Unit Rates

Front

What is a rate?

Back

A rate is a ratio that compares 2 different units or measurements.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity by the number of units to find the amount per one unit.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

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

Back

19 cars per day.

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CCSS.3.OA.A.3

Front

A machine can pack 70 boxes of spaghetti in 5 minutes. How many boxes can they pack in 8 minutes?

Back

112 boxes.

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CCSS.3.OA.A.3

Front

If a train travels 300 miles in 5 hours, what is its speed in miles per hour?

Back

60 miles per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

John can type 120 words in 3 minutes. How many words can he type in 10 minutes?

Back

360 words.

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CCSS.6.RP.A.3B

Front

What is the formula to find the speed of an object?

Back

Speed = Distance ÷ Time.

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CCSS.6.RP.A.3B

Front

What is a unit rate in the context of speed?

Back

A unit rate for speed is the distance traveled per one hour.

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CCSS.6.RP.A.2

CCSS.6.RP.A.1

Front

If a car travels 150 miles in 3 hours, what is its unit rate of speed?

Back

50 miles per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What does it mean if a rate is expressed as a fraction?

Back

It means that the rate compares two quantities, such as miles per hour or dollars per item.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2