Ratios, Equivalent Ratios, Unit Rates

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What is a ratio?

Back

A ratio is a comparison of two quantities, showing 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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What does it mean for two ratios to be equivalent?

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Two ratios are equivalent if they represent the same relationship between numbers, even if the numbers themselves are different.

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CCSS.6.RP.A.3A

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How do you find an equivalent ratio?

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

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CCSS.6.RP.A.3A

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What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per'.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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

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The ratio of flour to sugar is 2:3.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How do you calculate the unit rate from a total cost?

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To calculate the unit rate, divide the total cost by the number of items.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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If 5 apples cost $10, what is the cost per apple?

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The cost per apple is $2.00.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is the ratio of 8 to 12 in simplest form?

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The simplest form of the ratio 8:12 is 2:3.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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If Jenny has 3 guitars and Steve has 4 guitars, what is the ratio of Steve's guitars to Jenny's?

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The ratio of Steve's guitars to Jenny's is 4:3.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How long does it take Kelly to draw 120 shapes if she can draw 15 shapes in 2 minutes?

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It takes Kelly 16 minutes to draw 120 shapes.

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CCSS.6.RP.A.3B