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