Ratios, Rates, and Unit Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division.

Front

What is a rate?

Back

A rate is a ratio that compares two different units, such as miles per hour.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit, such as 22 miles per hour.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the first quantity by the second quantity.

Front

If Ernie travels 195 miles in 3 hours, what is his speed in miles per hour?

Back

65 miles per hour.

Front

If Justin can type 408 words in 4 minutes, how many words can he type in 1 minute?

Back

102 words per minute.

Front

How many words can Justin type in 1 hour?

Back

6,120 words per hour.

Front

What is the mathematical operation involved in finding a ratio?

Back

Division.

Front

If a turtle takes 3 ¼ hours to walk 1 ½ miles, how long does it take to walk 1 mile?

Back

13/6 hours.

Front

What is the formula to find a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.