Multi-Step Ratio Problems

Use ratios to solve problems that are not proportions. The lesson has pupils solve multi-step ratio problems that involve fractional increases and decreases. The problems are of the form of mark-ups, discounts, commissions, and fees. The lesson is the 14th in a 22-part unit.

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CCSS: Designed
Instructional Ideas

  • Provide some direct instruction on how to approach fractional increase/decrease type problems
  • Encourage the use of multiple strategies to solve the problems
Classroom Considerations

  • Includes tape diagrams to help visualize the problem
Pros

  • Some of the answer keys show the different strategies scholars can use to arrive at the answer
  • The scaffolding points out some common errors
Cons

  • None
Common Core