Proportions and Unit Rates

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

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CCSS.7.RP.A.2A

Front

How do you find a unit rate?

Back

To find a unit rate, divide the quantity by the number of units. For example, if you travel 150 miles in 5 hours, the unit rate is 150 miles ÷ 5 hours = 30 miles per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a unit rate?

Back

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.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If a car travels 240 miles in 4 hours, what is the unit rate?

Back

60 miles per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the formula for solving proportions?

Back

Cross-multiply the two ratios and set them equal to each other.

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CCSS.7.EE.B.3

Front

If 3 apples cost $1.50, what is the cost of 1 apple?

Back

$0.50 per apple.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.

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CCSS.6.RP.A.3A

Front

How can unit rates help in making decisions?

Back

Unit rates allow for easy comparison of prices or rates, helping to determine the best value.

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CCSS.6.RP.A.3B

Front

If a recipe requires 2 cups of flour for 4 servings, how much flour is needed for 1 serving?

Back

0.5 cups of flour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the unit rate of 100 miles in 2 hours?

Back

50 miles per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2