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Rules For Integer Operations
 

Rules For Integer Operations

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    Rules For Integer Operations Rules For Integer Operations Presentation Transcript

    • Rules for Integer Operations Bryan McDonald Pangburn School District www.macsclass.edublogs.org [email_address]
    • Adding (when signs are the same)
      • Keep the sign
      • Add
      • Examples:
      • 3 + 4 = 7
      • (-9) + (-4) = -13
    • Adding (when signs are different)
      • Keep the sign of the number that is farthest from 0
      • Subtract bigger number from smaller number
      • Examples:
      • -3 + 5 = 2
      • -7 + 4 = -3
    • Subtract
      • Change the subtraction sign to an addition sign
      • Change the sign of the second number
      • Follow addition rules
      • Examples:
      • 3 – (- 7) =
      • 3 + (+7) = 10
    • Multiply/Divide
      • If there are an EVEN number of negative signs …the answer will be POSITIVE
      • If there are an ODD number of negative signs …the answer will be NEGATIVE
      • Examples:
      • -4 x (-7) = 28
      • 5 x (-3) = -15