unit rates and proportions

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per' something, such as miles per hour or price per item.

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total quantity by the number of units. For example, if you have 12 apples for $3, the unit rate is $3 ÷ 12 = $0.25 per apple.

Front

What is the unit rate of 18 orders in 3 days?

Back

6 orders per day (18 ÷ 3 = 6).

Front

If 231 miles were driven using 7 gallons of gas, what is the mileage in miles per gallon?

Back

33 miles per gallon (231 ÷ 7 = 33).

Front

What is the price per product if 8 products cost $14.00?

Back

$1.75 per product ($14.00 ÷ 8 = $1.75).

Front

How do you find the price per item?

Back

Divide the total cost by the number of items. For example, if 9 candy bars cost $13.50, the price per candy bar is $13.50 ÷ 9 = $1.50.

Front

What is the unit rate of players to teams if there are 156 players on 12 teams?

Back

13 players per team (156 ÷ 12 = 13).

Front

What does 'per' indicate in unit rates?

Back

'Per' indicates a comparison of one quantity to one unit of another quantity, such as miles per hour or dollars per item.

Front

If a car travels 120 miles in 2 hours, what is the speed in miles per hour?

Back

60 miles per hour (120 ÷ 2 = 60).

Front

What is the unit rate of 45 minutes for 3 tasks?

Back

15 minutes per task (45 ÷ 3 = 15).