1. Unit Rates and Proportional Reasoning
Chapter 5
Section 5.2

2. Objective
The students will be able to find unit rates and unit costs using proportional reasoning.

3. Vocabulary Rate – a ratio that compares two quantities
Unit rate – the rate for one unit of a given quantity
Unit cost – is a unit rate that gives the cost per unit

4. Example
A package of cheese contains 15 servings and has a total of 147 grams of fat. What is the number of grams of fat per serving?

5. Example
Cereal costs $0.31 / oz
Find the cost for an 8 oz box.

6. Example
You have two bottles of shampoo and want to know which is the better buy.
Bottle one is 16 oz for $6.19
Bottle two is 13.5 oz for $3.99

7. Exit Ticket
Dog food costs $0.35/lb. How much for a 20-lb bag?

8. Exit Ticket
Find the unit rate for 210 heartbeats in 3 minutes.

9. Questions?

10. Worksheet