Unit Rates and Ratios 7th Grade

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 single unit. For example, if you travel 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

Which of the following is NOT an example of a unit rate? 20 miles per hour, 60 feet per minute, $40.00 every day, All of these are examples of unit rates.

Back

All of these are examples of unit rates.

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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 first quantity by the second quantity to find out how much of the first quantity corresponds to one unit of the second quantity.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If Mrs. Esposito drove 585 miles to North Carolina in 9 hours, what speed was she driving? (miles per hour)

Back

65 mph.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

The ratio of 6th graders to 7th graders at a basketball game is 4:1. If there are eight 7th graders, how many 6th graders are there?

Back

32.

Front

What is the formula for finding a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If a car travels 72 miles in 4 hours, what is the unit rate in miles per hour?

Back

18 m.p.h.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What does it mean if a ratio is simplified?

Back

A simplified ratio is expressed in its lowest terms, meaning that both numbers have been divided by their greatest common factor.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you convert a ratio to a fraction?

Back

To convert a ratio to a fraction, write the first number as the numerator and the second number as the denominator.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2