First...check the signs.
If the signs are the same:
--- Add the numbers
--- Keep the same sign
5 + 8 a positive plus a positive
=13 equals a positive
-4 + (-6) a negative plus a negative
= -10 equals a negative
If the signs are different
--Find the difference
-- Keep the sign of the number with the biggest absolute value
example: 4 + (-5) = -1
-5 has the bigger absolute value, so the answer must be negative!
6 + (-4) = 2
6 has the bigger absolute value, so the answer must be positive!
We also answered some word problems that involved subtracting integers. Remember, subtracting was the same as adding the opposite.