Rates and Unit Rates

Front

What is a rate?

Back

A rate is a ratio that compares two different quantities, usually with different units, such as miles per hour or cost per item.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is 1. For example, if a car travels 60 miles in 1 hour, the unit rate is 60 miles per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

Convert 27 feet to yards.

Back

27 feet is equal to 9 yards.

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CCSS.2.MD.A.2

Front

How do you find the unit rate from a total amount?

Back

To find the unit rate, divide the total amount by the number of units. For example, if you earn $90 for 5 hours of work, the unit rate is $90 ÷ 5 = $18 per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If 5 notebooks cost $20, how much does 1 notebook cost?

Back

1 notebook costs $4.

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CCSS.6.RP.A.3B

Front

What is the formula to calculate a unit rate?

Back

Unit Rate = Total Amount ÷ Number of Units.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

Lynnette can wash 95 cars in 5 days. How many cars does she wash each day?

Back

Lynnette washes 19 cars per day.

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CCSS.3.OA.A.3

Front

If a car travels 150 miles in 3 hours, what is the unit rate in miles per hour?

Back

The unit rate is 50 miles per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you calculate the cost of multiple items at a given rate?

Back

Multiply the cost of one item by the number of items. For example, if one notebook costs $4, then 4 notebooks cost $4 × 4 = $16.

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CCSS.4.OA.A.2

Front

What is the unit rate if you earn $90 in 5 hours?

Back

The unit rate is $18 per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2