Télécharger la présentation
## Ratios

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -

**Ratios**Comparison of Two Numbers by Division**Ratios**• All Fractions are Ratios • A Ratio is a comparison of two numbers by division • There are several ways to write ratios**Ways to write ratios**• As a fraction (division bar): or • Using the word “to”: 4 to 5 • Using a colon: 4:5 • Using “out of”: 4 out of 5 • All decimals and percents are forms of ratios: “40% chance of rain”**Two Types of Ratios**• Part to Whole • When a piece of something is compared to all of something • Can be written using all four methods of writing ratios • Part to Part • When a piece of something is compared to the another piece of that something • Can only be written using “to” and the colon**If there are 18 ice cream cones and 7 are chocolate, the**ratio of chocolate to total is:**If 6 cones are oreo cookie, the ratio of oreo to chocolate**is:**Which of those ratios is part to part (the first one or the**second one)