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.

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.

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.

Front

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

Back

65 mph.

Front

What is a ratio?

Back

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

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.

Front

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

Back

18 m.p.h.

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.

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.