Multiplying and Dividing Signed Numbers

Multiplying and Dividing Signed Numbers

Rules for Multiplying/Dividing:

Multiplying

  1. The product of two numbers with the same signs is positive.
  2. The product of two numbers with different signs is negative.
    Examples:
    (+2) x (+9) = +18
    (-7) x (-8) = +56
    (-5) x (+4) = -20
    (+7) x (-2) = -14
  3. If you have a long series of multiplications of negative values, remove the negative signs in pairs.
    (-2)(-3)(-1)(-1)(-5)(-1)(-2) =(2)(3)(1)(1)(5)(1)(-2) = -60

Dividing

  1. The quotient of two numbers with the same sign is positive.
  2. The quotient of two numbers with different signs is negative.

Multiplying and Dividing Signed Numbers 1

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