Proportions

Front

What is a proportion?

Back

A proportion is when two ratios are equivalent and show the same value.

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CCSS.7.RP.A.2A

Front

Back

x = 5

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CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

If 2 apples cost $20, what will 5 apples cost?

Back

$50

Tags

CCSS.6.RP.A.3B

Front

Determine whether the following ratios form a proportion: 1/2 and 2/4

Back

Not a Proportion

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CCSS.7.RP.A.2A

Front

What is the cross-multiplication method used for?

Back

It is used to determine if two ratios form a proportion by multiplying the means and extremes.

Tags

CCSS.7.RP.A.2A

Front

What does it mean if two ratios are equivalent?

Back

It means they represent the same relationship or value.

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CCSS.6.RP.A.3A

Front

Back

x = 4

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CCSS.7.RP.A.3

Front

What is the formula for finding a missing value in a proportion?

Back

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CCSS.7.RP.A.2B

Front

If 3 oranges cost $12, how much do 9 oranges cost?

Back

$36

Tags

CCSS.6.RP.A.3B

Front

What is the first step in solving a proportion?

Back

Identify the two ratios and set them equal to each other.

Tags

CCSS.7.RP.A.3