Unit Rates and Proportions

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What is a unit rate?

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A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity, often expressed as a fraction.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How do you calculate a percent of a number?

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To calculate a percent of a number, multiply the number by the percent (as a decimal). For example, to find 5% of 500, calculate 500 * 0.05 = 25.

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CCSS.6.RP.A.3C

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What is a proportion?

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CCSS.7.RP.A.2A

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How do you find the average rate of usage?

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CCSS.6.RP.A.3B

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What is the best buy when comparing prices?

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To determine the best buy, calculate the unit price for each option and compare them. The option with the lower unit price is the better buy.

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CCSS.6.RP.A.3B

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How do you simplify a complex fraction?

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To simplify a complex fraction, multiply the numerator and the denominator by the least common denominator (LCD) of the fractions involved, then simplify.

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What is the relationship between grams and cups in a recipe?

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The relationship between grams and cups in a recipe is a conversion factor that depends on the ingredient. For example, if 12 grams of peanuts make 50 cups of peanut butter, you can find how many grams are needed for a different number of cups.

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CCSS.6.RP.A.3D

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How do you set up a proportion to solve a problem?

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CCSS.7.RP.A.2C

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What is the formula for finding the percent increase?

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CCSS.6.RP.A.3C

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How do you convert a fraction to a percent?

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