A rate compares two quantities with different units.

Driving 120 miles in 2 hours

​

The units are miles & hours

​Examples: Miles per hour, cups per recipe, cost for one, dollars per hour

A unit rate is a rate that is simplified so that it has a denominator of 1 unit.

Example: Driving 60 miles in 1 hour or

60 miles/1 hour

​REMEMBER:

REMEMBER:

To get the unit rate, divide the numerator by the denominator.

​

An 8-pack of Gatorade costs $8.96. How much does ONE bottle cost?

Cost per bottle

Remember: $ goes in the calculator first!​

8.96 ÷ 8 = 1.12

So the unit cost is $1.12/1 bottle

Sometimes you will have to ROUND TO THE NEAREST CENT! (hundredth)

​

12 pencils cost $3.86​. What is the

unit cost?

Sometimes you will have to ROUND TO THE NEAREST CENT! (hundredth)

​ 12 pencils cost $3.86​. What is the

unit cost?

3.86 ÷ ​12 = 0.321666...

Sometimes you will have to ROUND TO THE NEAREST CENT! (hundredth)

​ 12 pencils cost $3.86​. What is the

unit cost?

3.86 ÷ ​12 = 0.321666...

​that rounds to 0.32 or 32 cents per pencil

Unit Cost is important when you want to buy the better deal.

The LEAST unit cost is the BETTER BUY!!!!!!​

​When finding the BETTER BUY, you need to COMPARE the unit costs...

​

​Product #1: Unit cost = 1.74

​Product #2: Unit cost = 1.68

​Product #2 is the better buy!

​Product #2: Unit cost = 1.68