Common Core State Standard: 7.RP.3

Grade 7
Subject MATH
Domain Ratios & Proportional Relationships
Theme Analyze proportional relationships and use them to solve real-world and mathematical problems
Standard Use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error.
Reference URL http://www.corestandards.org/Math/Content/7/RP
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