Ratios and Proportions

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:b'.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you simplify a ratio?

Back

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

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

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CCSS.7.RP.A.2A

Front

How do you find the unit rate?

Back

To find the unit rate, divide the first quantity by the second quantity to express it per one unit of the second quantity.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If a pizza has 8 slices and costs $12, what is the cost per slice?

Back

$1.50 per slice.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the simplified form of the ratio 12:3?

Back

4:1.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the ratio of 10 students wanting hot dogs to 26 wanting hamburgers?

Back

10:26.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If x + 2 = 8, what is the value of x?

Back

x = 6.

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CCSS.6.EE.B.7

Front

What is the unit rate of 30 cm of snow in 6 hours?

Back

5 cm of snow per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What does it mean if two ratios are equivalent?

Back

It means that they represent the same relationship between quantities.

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CCSS.6.RP.A.3A