1. Ratios PreAlgebra Farris 2015

2. I can write ratios as fractions in simplest form. I can simplify ratios involving measurement.

3. Ratio  Comparison of two quantities by division. The ratio is usually written as a fraction in simplest form.  3 to 9 3:9 3 9

4. Let’s start with music  https://www.youtube.com/watch?v=YFeU6SSmpv8 https://www.youtube.com/watch?v=YFeU6SSmpv8

5. Ratios  Can express part to part  Can express part to whole  Can express whole to part relationships

6. Let’s Do It  Express the ratio in simplest fraction form  12 baskets in 18 attempts 2 3

7. Let’s Do It  Ten out of every 30 Americans own a portable MP3 player. Express this ratio as a fraction in simplest form. 1313

8. Let’s Do It  Express as a fraction in simplest form  9 out of 15 pets  4 players to 52 cards  96 people to 3 buses 3535 1 13 32 1

9. Ratios and Measurements  Express as a fraction in simplest form  3 pints to 4 quarts  2 pounds to 6 ounces  6 gallons to 3 quarts 3434 1313 3232

10. Word Problem  A water park has 14 body slides, 8 tube slides, 2 types of swimming pools, and 6 water play areas. Use this information to write each ratio as a fraction in simplest form.  Body slides: tube slides  Play areas : tube slides  Slides : not slides  Slides: all attractions 7474 3434 11 4 11 15