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Sunday, January 19, 2014

Trina's scribe pots

                         




Sign rule part 1 

when the Integer have the same value +or- the product is positive 

when the Integer have different values (+) (-) the product is negative 

(+2 )X (+3) X (-1) X (-1) 
|_______| 
       +6 x (-1) 
          -6 x (-1) = +6 


Sign rule part 2 

when multiplying integer count the negative signs 
odd number - product 
even number + product 

(+3) x (-4) 
3 groups of 4 

---- ---- ----


(-2) x (+3) = -6 
remove 2 groups of 3 

_ _ _  _ _ _ 
+ + +  + + + 
do a zero pair 




If the first sign is negative you will do a zero pair 

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