How do you solve integer math problems?

Answer 1

If you're adding: Ex. -3 + 15 (-3, -2, -1, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15) = 12
If you're subtraction: Ex. -17 - 20 (add the opposite, so problem really equals 17+20)
= 37
If you're multiplying: Ex. 5 x -10 (one negative equals negative answer. both positive or negative equals positive answer.)
= -50
If you're dividing: Ex. -100/10 (same rules as multiplication)
= -10