Ratios and Proportions

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How do you find a unit rate?

Back

To find a unit rate, you must divide the quantity by the number of units.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing the relative size of one quantity to another.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What are proportions?

Back

Proportions are equations that state that two ratios are equal.

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CCSS.7.RP.A.2B

Front

How can you express a proportion mathematically?

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A proportion can be expressed as a fraction equation, such as a/b = c/d.

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CCSS.7.RP.A.2C

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What is the relationship between ratios and proportions?

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Ratios are used to compare two quantities, while proportions show that two ratios are equivalent.

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CCSS.6.RP.A.3A

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What is the formula for finding a missing value in a proportion?

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The formula is cross-multiplication: a/b = c/d leads to ad = bc.

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CCSS.7.RP.A.2C

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What does it mean if two ratios are equivalent?

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If two ratios are equivalent, it means they represent the same relationship between quantities.

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CCSS.6.RP.A.3A

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How can you determine if two ratios are proportional?

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You can determine if two ratios are proportional by cross-multiplying and checking if the products are equal.

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CCSS.7.RP.A.2A

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What is an example of a unit rate in real life?

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An example of a unit rate is speed, such as miles per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2