This power point gives the rules of adding and subtracting integers and several examples as well, each on their own slide. This power point is very user friendly. You could add number lines, tiles, or even a thermometer to each slide depending on the way you teach adding and subtracting integers.
Adding Integers - 25 problems
Subtracting Integers - 25 problems
I used this with my class and I had magnetic tiles which would help students actually see the positives and negatives.