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Monday, January 1, 2018

GED LESSON: Pre-Algebra: Multiplying with Negative Numbers

SuccessGED Pre-Algebra: Multiplying with Negative Numbers





POSITIVE X POSITIVE = POSITIVE
      +   X   +    =  +

 NEGATIVE X NEGATIVE = POSITIVE 
    -    X   -    =   +

 POSITIVE X NEGATIVE = NEGATIVE

     +    X   -     =   -

 NEGATIVE X POSITIVE  = NEGATIVE
    -  X   +   = -

 (If there are an even number of negatives, the answer is POSITIVE; if there are an odd number of negatives the answer is NEGATIVE) 

 POSITIVE  ÷  POSITIVE = POSITIVE
      +   ÷   +    =  +

 NEGATIVE ÷ NEGATIVE = POSITIVE 
    -    ÷   -    =   +

 POSITIVE ÷ NEGATIVE = NEGATIVE

     +    ÷   -     =   -

 NEGATIVE ÷ POSITIVE  = NEGATIVE
    -  ÷   +   = -
         
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