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  • 1. Types of Strategies to SolvePercentage ProblemsBy: Kari Knisely
  • 2. What you will learn…When and how to use the following strategies:10% RulePercent ProportionPercent EquationPercent of Change EquationTic-Tac-Toe Table
  • 3. What you will need…Take notes as needed in order to familiarize yourself with thestrategies presented.PencilPaper
  • 4. 10% Rule Great way to estimate any percentage problem
  • 5. 10% Rule Move the decimal 1 place to the left 10% of 40 = 4.0 10% of 32.6 = 3.26 10% of 2 = .2 10% of 5,345 = 534.5
  • 6. 10% Rule – Example 140% of 25 = ? 10% of 25 = 2.5 10% of 25 = 2.5 10% of 25 = 2.5 10% of 25 = 2.5 40% of 25 = 10.0
  • 7. 10% Rule –Example 230% of 30 = ? 10% of 30 = 3.0 10% of 30 = 3.0 10% of 30 = 3.0 30% of 30 = 9.0
  • 8. 10% Rule –Example 330% of 30 = ? 10% of 30 = 3.0 10% of 30 = 3.0 10% of 30 = 3.0 30% of 30 = 9.0
  • 9. Percent ProportionNonPercentage Part = % Percentage AmountAmount Whole 100 is % = 100 Non Percentage Percentage Amount of Amount
  • 10. Percent Proportion – Example 1NonPercentage Part = % Percentage AmountAmount Whole 100 is % = 100 Non Percentage Percentage Amount of Amount
  • 11. Percent Proportion – Example 2NonPercentage Part = % Percentage AmountAmount Whole 100 is % = 100 Non Percentage Percentage Amount of Amount
  • 12. Percent Proportion – Example 3NonPercentage Part = % Percentage AmountAmount Whole 100 is % = 100 Non Percentage Percentage Amount of Amount
  • 13. Percent Equation %  Whole = Part
  • 14. Percent Equation – Example 1 %  Whole = Part
  • 15. Percent Equation – Example 2 %  Whole = Part
  • 16. Percent Equation – Example 3 %  Whole = Part
  • 17. Percent of Change Equation – Example 1New – Old = Percent of Change Old
  • 18. Tic-Tac-ToeWhole/Original StartAmount 100Change (+ or -) % + or -Part of OriginalAmount % End
  • 19. Tic-Tac-Toe – Example 1Whole/Original StartAmount 100Change (+ or -) % + or -Part of OriginalAmount % End
  • 20. What you learned…When and how to use the following strategies:10% RulePercent ProportionPercent EquationPercent of Change EquationTic-Tac-Toe Table
  • 21. Works Cited All images retrieved from Google images