how is it possible to let 256x256=to 66536 and using distributive does not work like this 250x250=62500 and 6x6=36 and the answers do not match
256 x 256 = (250 + 6) x (250 + 6)
So, you must use FOIL: F = First = 250 x 250, O = Outside = 250 x 6
I = Inside = 6 x 250, L = Last = 6 x 6
You get: (250 x 250) + (250 x 6) + (6 x 250) + (6 x 6)
= 62500 + 1500 + 1500 + 36 = 65536
FOIL is an extended distributive property.