Rates/Unit Rates

Front

What is a rate?

Back

A rate is a ratio that compares two different quantities, often expressed as a fraction. For example, speed is a rate that compares distance to time.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one. It tells you how much of one item you get for one unit of another item.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the first quantity by the second quantity. For example, if you have 60 miles in 2 hours, the unit rate is 60 miles ÷ 2 hours = 30 miles/hour.

Front

Which is the better buy: 4 t-shirts for $2.24 or 6 t-shirts for $3.12?

Back

6 t-shirts for $3.12 is the better buy because the unit price is lower.

Front

If a car travels 242 miles in 4 hours, what is the unit rate in miles per hour?

Back

The unit rate is 60.5 miles/hour.

Front

What does 'mpg' stand for in driving?

Back

'mpg' stands for miles per gallon, which measures how many miles a vehicle can travel on one gallon of fuel.

Front

If Brad drives 527 miles on 17 gallons, how many miles does he drive on one gallon?

Back

Brad drives 31 miles per gallon.

Front

If Felix paid $6.00 for 12 granola bars, how much would he pay for 9 granola bars?

Back

Felix would pay $4.50 for 9 granola bars.

Front

How do you find the unit rate of words per minute?

Back

To find the unit rate of words per minute, divide the total number of words by the total number of minutes.

Front

If you read 45 words in 3 minutes, what is the unit rate?

Back

The unit rate is 15 words/minute.