7.RP.A.3 Proportional Reasoning

7.RP.A.3 Use proportional relationships to solve multistep ratio and percent problems.

By Rebecca Hansen

Multiple Choice

Decrease 85 by 15%

• 12.75

• 72.25

• 70.00

• 84.85

Misconception

Subject | Subject

Some text here about the topic of discussion

​Answer Choice	Misconception
12.75	​Students find the percentage value and don’t add or subtract to the amount to find the increase or decrease
​70.00	​Students add or subtract the percentage value to the amount when increasing or decreasing an amount by a given percentage.
84.85	​Students add or subtract the converted percentage value to the amount when increasing or decreasing an amount by a given percentage.

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​Watch this video to learn more on percentage decreases

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Multiple Choice

• $12.75

• $72.25

• $70.00

• $84.85

Misconception

Subject | Subject

Some text here about the topic of discussion

​Answer Choice	Misconception
$12.75	​Students find the percentage value and don’t add or subtract to the amount to find the increase or decrease
$70.00	​Students subtracted the percentage value to the amount when decreasing an amount by a given percentage.
​$84.85	​Students add or subtract the converted percentage value to the amount when increasing or decreasing an amount by a given percentage.