Ratios, Equivalent Ratios, Ratio Tables

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What is a ratio?

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

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How do you write a ratio?

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Ratios can be written in three ways: using a colon (e.g., 3:2), using the word 'to' (e.g., 3 to 2), or as a fraction (e.g., 3/2).

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What are equivalent ratios?

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Equivalent ratios are ratios that express the same relationship between two quantities, even if the numbers are different.

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CCSS.6.RP.A.3A

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How do you find equivalent ratios?

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To find equivalent ratios, you can multiply or divide both terms of the ratio by the same non-zero number.

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CCSS.6.RP.A.3A

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What is a ratio table?

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A ratio table is a table that displays pairs of numbers that form equivalent ratios.

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If the ratio of cats to dogs is 4:5, what is the equivalent ratio if both are multiplied by 2?

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The equivalent ratio is 8:10.

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CCSS.6.RP.A.3A

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What is the ratio of birds to all animals if there are 3 birds and 18 animals?

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The ratio of birds to all animals is 3 to 18.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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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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The ratio of flour to sugar is 2:3.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is the missing value in the ratio table if the ratio is 1:4 and the first value is 3?

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The missing value is 12.

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CCSS.6.RP.A.3A