1. A N I NTRODUCTION TO R ATIOS !

2.  A comparison between two quantities  For every x units of one quantity, there are y units of another A R ATIO IS …

3. 3 W AYS TO D ISPLAY R ATIOS

4.  Part to part  Part to whole  Whole to part Ratios Show Three Scenarios

5. Scenario #1: Part to Part

6. Scenario #2: Part to Whole

7. Scenario #3: Whole to Part

8.  Example #1: A sixth grade basketball team has 3 centers, 5 forwards, and 6 guards. Write a ratio for each comparison using a colon:  Forwards to guards (part to part) 5:6  Centers to total (part to whole) 3:14  Total to guards (whole to part) 14:6 Ratio Word Problem

10.  Example #3: to Gene has a movie collection. He has 9 Adventure movies, 8 Horror, 5 Sci-Fi, and 12 Comedy. Write a ratio for each comparison using the word, “to.” 8 to 12  Horror to comedy (part to part) 8 to 12 5 to 34  Sci-Fi to total (part to total) 5 to 34 34 to 9  Total to Adventure (total to part) 34 to 9 Ratio Word Problem

11. Equivalent Ratios

12. Practice – You Try!

13. Directions: Write the following ratios in all three ways.

14. Practice – You Try!