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Percentages: Reverse Percentages - PowerPoint PPT Presentation

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Percentages: Reverse Percentages
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  1. Percentages: Reverse Percentages Intelligent Practice Silent Teacher Narration Your Turn • Percentage change: 10% decrease • New value: £18 • Percentage change: 10% decrease • New value: £180 Practice

  2. Worked Example Your Turn Calculate the original amount : Calculate the original amount: • Percentage change:10% decrease • New value: £360 • Percentage change: 25% decrease • New value: £150 • Percentage change:10% increase • New value: £440 • Percentage change: 25% increase • New value: £250

  3. % change: 10% increase • New value: £44 • % change: 10% increase • New value: £88 • % change: 20% increase • New value: £960 • % change: 5% increase • New value: £84 • % change: 1% increase • New value: £808 • % change: 5% increase • New value: £840 • % change: 10% decrease • New value: £36 • % change: 20% decrease • New value: £32 • % change: 10% decrease • New value: £18 • % change: 10% decrease • New value: £180 • % change: 5% decrease • New value: £190 • % change: 5% decrease • New value: £19

  4. % change: 10% increase • New value: £44 £40 • % change: 10% increase • New value: £88 £80 • % change: 20% increase • New value: £960 £800 • % change: 5% increase • New value: £84 £80 • % change: 1% increase • New value: £808 £800 • % change: 5% increase • New value: £840 £800 • % change: 10% decrease • New value: £36 £40 • % change: 20% decrease • New value: £32 £40 • % change: 10% decrease • New value: £18 £20 • % change: 10% decrease • New value: £180 £200 • % change: 5% decrease • New value: £190 £200 • % change: 5% decrease • New value: £19 £20