Proportions

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 solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the unknown variable.

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CCSS.7.RP.A.2C

Front

If a/b = c/d, what is the cross-multiplication method?

Back

The cross-multiplication method states that a * d = b * c.

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CCSS.5.NF.B.5B

Front

What is the first step in solving a proportion?

Back

The first step is to set the two ratios equal to each other.

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CCSS.7.RP.A.3

Front

If 3/4 = x/12, what is the value of x?

Back

x = 9.

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CCSS.7.RP.A.2B

Front

What is the relationship between direct variation and proportions?

Back

Direct variation describes a relationship where two quantities increase or decrease together, which can be expressed as a proportion.

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CCSS.7.RP.A.2D

Front

How can proportions be used in real-life situations?

Back

Proportions can be used to solve problems involving scaling, such as recipes, maps, and model building.

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CCSS.7.RP.A.3

Front

If a car travels 60 miles in 1 hour, how far will it travel in 30 minutes?

Back

30 miles.

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CCSS.6.RP.A.3B

Front

What is the formula for finding the unit rate?

Back

The unit rate is found by dividing the quantity by the number of units, expressed as 'quantity per unit'.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If 5 apples cost $2.50, what is the cost of 1 apple?

Back

The cost of 1 apple is $0.50.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2