2. A ratio is a comparison of two or more quantities in the same category. Example: A ratio of boys to girls or A ratio of apples to oranges A ratio of cars to trucks BACK

3. A ratio can be written three ways: 3:5 3/5 3 to 5 Either way, you read it as three to five BACK

4. Ratios are often expressed as fractions in simplest form or as a decimal. BACK

5. Order matters! What you say is what you write. If you say green to blue, you write green to blue: 12 to 8 What ratios can we form from the tiles above? 12 to 8 BACK

6. Create as many ratios as possible. Write each ratio three different ways. BACK

7. Simplest Form Write the ratio 50 to 300 in simplest form. BACK

8. Simplest Form Write the ratio 60 to 12 in simplest form. BACK

9. Rate Rate: A comparison of two quantities that have different units of measure. You are comparing unlike things (often time, but not always!) Miles per Hour Cost per Pound Words per Minute BACK

10. Unit Rate A Unit Rate is a rate simplified so that one of the quantities equals 1. Ex. You want to know the cost or amount for 1. BACK

11. Unit Rate BACK

12. Unit Rate BACK

13. Mile per Gallon M.P.G. stands for miles per gallon and is usually used for gas mileage in cars. BACK

14. Now you try it! Last month Tim ate 4 pizzas, 6 burgers, 5 hotdogs and 10 bags of Doritos. Find the ratio of pizzas to Doritos. Find the ratio of hotdogs to the total foods Tim ate. BACK

15. Now you try it! A pet store sold 3 parakeets, 12 gold fish, and 6 turtles last week. Find the ratio of parakeets to turtles. Find the ratio of turtles to gold fish. Find the ratio of gold fish to the total pets sold. BACK

16. Now you try it! Marco’s family drove 320 miles yesterday. It took them 8 hours. How many miles did they travel per hour? What kind of ratio is this? BACK