Simon

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Simon

  1. 1. (-3) + (+2) = (-1)
  2. 2. (+8) – (-13) = (+21) Because…(+8) – (-13) = (+8) + (+13)
  3. 3. Different Symbols (-2) × (+5) = (-10)
  4. 4. Divide as if there were no symbols. Add them later.

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