Ratio Concepts

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What is a ratio?

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A ratio is a comparison of two quantities by division, 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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A ratio can be written in three ways: using a colon (e.g., 3:4), as a fraction (e.g., 3/4), or with the word 'to' (e.g., 3 to 4).

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CCSS.6.RP.A.1

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What does it mean if a ratio is simplified?

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A simplified ratio means that the numbers in the ratio have been reduced to their smallest whole number form.

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CCSS.6.RP.A.1

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If there are 4 red marbles and 8 blue marbles, what is the ratio of red to blue?

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The ratio of red to blue is 4:8, which simplifies to 1:2.

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CCSS.6.RP.A.1

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What is the ratio of boys to girls if there are 6 boys and 9 girls?

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The ratio of boys to girls is 6:9, which simplifies to 2:3.

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CCSS.6.RP.A.1

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How do you find equivalent ratios?

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To find equivalent ratios, 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 the ratio of 10 to 15?

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The ratio of 10 to 15 is 10:15, which simplifies to 2:3.

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CCSS.6.RP.A.1

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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

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What is the ratio of 12 to 16?

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The ratio of 12 to 16 is 12:16, which simplifies to 3:4.

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CCSS.6.RP.A.1

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If there are 5 cats and 10 dogs, what is the ratio of dogs to cats?

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The ratio of dogs to cats is 10:5, which simplifies to 2:1.

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CCSS.6.RP.A.1

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