7-RP3

Use proportional relationships to solve multistep ratio and percent problems.

• Examples: Sample problems may involve simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, and percent error.

New content

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ACOS 2009 Correlation
Sixth Grade

• 2 - Solve problems involving decimals, percents, fractions, and proportions.
• 2.2 - Computing simple interest.

Seventh Grade

• 3.3 - Using percents to solve problems, including problems involving discounts, taxes, commissions, and simple interest.

Eighth Grade

• 1.4 - Applying proportional reasoning to application-based situations.

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CMP2 Correlation

Book	Investigation	Objective
Comparing & Scaling	1-4	7-RP3
Stretching & Shrinking	4-5	7-RP3
Variables & Patterns	one ACE problem	7-RP3
Bits & Pieces III	4	7-RP3

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Resources

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From Harding Math Specialist

• 25% Sale -- http://map.mathshell.org/materials/tasks.php?taskid=358&subpage=apprentice -- Task asking students about a store whose sale prices decrease by 25% per week.

My Humble Opinion
Skills

1. Use proportional reasoning to solve multistep ratio problems.
2. Use proportional reasoning to solve multistep percent problems.

Sample problem situations

1. Simple interest
2. Tax
3. Markups
4. Markdowns
5. Gratuities
6. Commissions
7. Fees
8. Percent increase and decrease
9. Percent error

Very similar to 2003/2009 objective 3, with the addition of a few new types of problem situations.