1.6  Multiplication & Division of Real Numbers      Homework: Every Other Odd 1 – 100

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DSPM 0800 Class Notes

Rules for Multiplication & Division:
Same Signs: POSITIVE product or quotient

Opposite Signs: NEGATIVE product or quotient

Example: (-4)(7)            Example: (-9)(-8)         Example:
                    -28                                     72   
                                
Example:            Example:  

Example:

Example:  (-8)(2)(-1)(-5)                   Example:  (-8)(-2)(-1)(-5)
                         - 80                                                80

*Notice:
Multiplying an ODD number of negative factors, the product is NEGATIVE. Multiplying an EVEN number of negative factors, the product is POSITIVE.


Division Involving Zero:



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