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.