1. Ratios Unit Rate Similar Shapes Solving Proportions

2. Unit Rate: The cost per unit – Write unit rate as a fraction, then divide. Example: Paying $2.49 for a 12 oz bag of chips Example: Driving 230 miles on 9 gallons of gas Example: Getting 6 apples for $1.80

3. Directions: Find the unit rate. Which is the better buy? A)12 oz can of soda for.50 B)32 oz soft drink for 1.09

4. Directions: Find the unit rate. Which is the better buy? A)$0.75 for three doughnuts B)$2.00 for 7 doughnuts

5. Directions: Find the unit rate. Which is the better vehicle? A)240 miles on 10 gallons B)340 miles on 15.5 gallons

6. Directions: Are the two fractions proportional?

8. Directions: Which two fractions are proportional?

9. Proportions:

11. The classroom ratio of boys to girls is 3:2. If there are 12 boys in the class, then how many girls are there?

12. Similar question…just a little different: The classroom ratio of boys to girls is 3:2. If there are 30 kids in the class, then how many are boys?

13. Homework: Pg 348 11-18 Pg 358 15-28 Must copy problem, must show the ratio (if possible). MUST SHOW STEPS Please do this as neatly as possible! Organized homework usually means better results.