8th Rates, Unit Rates, and Proportions

Front

What mathematical operation does unit rates involve?

Back

Division

Front

You're throwing a party, and you ordered 15 pizzas for your guests. Your total came to $97.50. What was your unit cost per pizza?

Back

$6.50 per pizza

Front

Which is the better buy? A 12-pack of Pepsi for $3.50 or a 6-pack for $1.80?

Back

The 12-pack

Front

When are unit rates useful?

Back

When you want to compare prices.

Front

A unit rate is a rate in which the unit in the denominator is:

Back

1

Front

What is a rate?

Back

A ratio that compares two quantities with different units.

Front

How do you calculate a unit rate?

Back

Divide the quantity by the number of units.

Front

If 5 apples cost $3.00, what is the unit rate per apple?

Back

$0.60 per apple.

Front

What is the unit rate of 120 miles in 2 hours?

Back

60 miles per hour.

Front

If a car travels 150 miles on 5 gallons of gas, what is the unit rate of miles per gallon?

Back

30 miles per gallon.