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Ratios

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

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Ratios

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  1. Ratios Comparison of Two Numbers by Division

  2. Ratios • All Fractions are Ratios • A Ratio is a comparison of two numbers by division • There are several ways to write ratios

  3. 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”

  4. 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

  5. If there are 18 ice cream cones and 7 are chocolate, the ratio of chocolate to total is:

  6. If 6 cones are oreo cookie, the ratio of oreo to chocolate is:

  7. Which of those ratios is part to part (the first one or the second one)

  8. A ratio is a comparison of two numbers by. . .

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