5+5 = 2(5) = 5+5 = (1+1+1+1+1) + (1+1+1+1+1) =/= 1+1+1+1+1+1+1+1+1+1 =/= (1+1) + (1+1) + (1+1) + (1+1) + (1+1) = 5(2)
5+5 =/= 5(2) = 2+2+2+2+2 = (1+1) + (1+1) + (1+1) + (1+1) + (1+1) =/= 1+1+1+1+1+1+1+1+1+1 =/= (1+1+1+1+1) + (1+1+1+1+1) = 5+5 = 2(5)
Thats what they teach in common core!