Introducing Ratios and Ratio Language

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What is a ratio?

Back

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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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How do you write a ratio?

Back

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

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What does the ratio 8 to 4 represent?

Back

The ratio 8 to 4 means that for every 8 of one quantity, there are 4 of another quantity.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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If there are 9 bananas, 4 apples, and 3 plums, what is the ratio of bananas to apples?

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The ratio of bananas to apples is 9 to 4.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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In a fruit basket with 9 bananas, 4 apples, and 3 plums, how many plums are there for every 3 bananas?

Back

For every 3 bananas, there is 1 plum.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is the ratio of plums to apples in a basket with 3 plums and 4 apples?

Back

The ratio of plums to apples is 3 to 4.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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If there is 1 mouse for every 2 cats, what is the ratio of mice to cats?

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The ratio of mice to cats is 1 to 2.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How many legs are there for every eye if there are 2 legs for every 1 eye?

Back

There are 2 legs for every 1 eye.

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CCSS.6.RP.A.3B

Front

What is the simplest form of the ratio 8 to 4?

Back

The simplest form of the ratio 8 to 4 is 2 to 1.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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If a recipe calls for a ratio of 2 cups of flour to 3 cups of sugar, how many cups of sugar are needed for 4 cups of flour?

Back

For 4 cups of flour, you would need 6 cups of sugar.