Fractional 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 is a fractional ratio?

Back

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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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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 unit rate?

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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

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How do you find a unit rate from a total cost and quantity?

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is the formula for calculating the price per item?

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The price per item can be calculated using the formula: Price per item = Total price / Number of items.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If a recipe calls for a ratio of 2:3 for sugar to flour, how much sugar is needed for 6 cups of flour?

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Front

What does it mean to divide a numerator by the denominator?

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Dividing the numerator by the denominator gives the unit rate, which represents how much of one quantity corresponds to one unit of another quantity.

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CCSS.7.RP.A.1

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If 4 red apples to 3 green apples is a ratio, how can it be expressed as a fraction?

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is the unit rate if 9 yards of fabric cost $72?

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CCSS.6.RP.A.1

CCSS.6.RP.A.2