Understanding Ratios

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What is a ratio?

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A ratio is a comparison of two quantities that shows how many times one value contains or is contained within the other.

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How can a ratio be expressed?

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What is the ratio of school apps to game apps if Amanda has 5 school apps and 3 game apps?

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5 to 3

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CCSS.6.RP.A.1

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If there are 2 dogs, 4 cats, and 5 hamsters in a pet shop, what is the ratio of dogs to all pets?

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2:11

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What is the simplest form of the ratio of cupcakes to cookies if there are 10 cupcakes and 60 cookies?

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1:6

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3=4

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If a recipe calls for 2 cups of flour and 3 cups of sugar, what is the ratio of flour to sugar?

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2:3

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CCSS.6.RP.A.1

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How do you simplify the ratio 8:12?

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Divide both sides by 4 to get 2:3.

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CCSS.6.RP.A.1

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What is the ratio of 15 apples to 5 oranges?

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3:1

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If a class has 12 boys and 18 girls, what is the ratio of boys to girls?

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2:3

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