Ratios and Equivalent Ratios

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What are three ways to write a ratio?

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Using 'to', using a colon, and as a fraction.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is the simplest form of the ratio of red to yellow LEGOs if there are 6 yellow and 3 red LEGOs?

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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Back

Yes.

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CCSS.6.RP.A.3A

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Back

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CCSS.6.RP.A.3A

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In a class of 30 students, 14 rode the bus. What is the ratio of students who rode the bus to those who used other transportation?

Back

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a ratio?

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A ratio is a comparison of two quantities by division.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How do you simplify a ratio?

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Divide both terms of the ratio by their greatest common factor.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is an equivalent ratio?

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An equivalent ratio is a ratio that expresses the same relationship between two quantities, even if the numbers are different.

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CCSS.6.RP.A.3A

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If the ratio of cats to dogs is 3:4, what is the equivalent ratio if there are 6 cats?

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The equivalent ratio is 6:8.

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CCSS.6.RP.A.3A

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How can you express the ratio of 5 to 10 in simplest form?

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The simplest form is 1:2.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2