Ratio+and+Percent+Problems

= 7-RP3 = =Use proportional relationships to solve multistep ratio and percent problems.=

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

Sixth Grade Seventh Grade Eighth Grade
 * ACOS 2009 Correlation **
 * 2 - Solve problems involving decimals, percents, fractions, and proportions.
 * 2.2 - Computing simple interest.
 * 3.3 - Using percents to solve problems, including problems involving discounts, taxes, commissions, and simple interest.
 * 1.4 - Applying proportional reasoning to application-based situations.


 * 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 ||


 * Resources **

From [|Harding Math Specialist]
 * **25% Sale** -- [] -- Task asking students about a store whose sale prices decrease by 25% per week.

**My Humble Opinion** Skills Sample problem situations Very similar to 2003/2009 objective 3, with the addition of a few new types of problem situations.
 * 1) Use proportional reasoning to solve multistep ratio problems.
 * 2) Use proportional reasoning to solve multistep percent problems.
 * 1) Simple interest
 * 2) Tax
 * 3) Markups
 * 4) Markdowns
 * 5) Gratuities
 * 6) Commissions
 * 7) Fees
 * 8) Percent increase and decrease
 * 9) Percent error