Percentages

Aoife O' Callaghan, 2016. 1. 31.


  • 1. Mental Percentages
  • 2. Percentages: Selling Problems, Profit & Loss
  • 3. Quiz on Percentage Profit & Loss 盈虧百分率測驗

1.

Mental Percentages
– Mr_Stewart_Maths

2.

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3.

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