Ratios and Rates Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

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CCSS.6.RP.A.1

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Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms of the ratio by their greatest common divisor (GCD).

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CCSS.6.RP.A.1

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What is an equivalent ratio?

Back

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

Front

If the ratio of cats to dogs is 2:3, how many cats are there if there are 15 dogs?

Back

There are 10 cats. (2/3 = x/15, so x = 10.)

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What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit of another quantity.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

Calculate the unit rate: 150 miles in 3 hours.

Back

50 miles per hour.

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CCSS.6.RP.A.1

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Front

What is the ratio of 12 apples to 16 oranges?

Back

The simplified ratio is 3:4.

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CCSS.6.RP.A.1

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Front

How do you find an equivalent ratio?

Back

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

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CCSS.6.RP.A.3A

Front

What is the ratio of stars to red circles if there are 4 stars and 7 red circles?

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The ratio is 4 to 7.

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CCSS.6.RP.A.1

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Front

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

Back

The ratio of flour to sugar is 2:3.

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CCSS.6.RP.A.1

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