This is 80 problems of practice for adding and subtracting integers. I have made the negative numbers in red if you have acccess to a color printer. By putting the negatives in red the students seem to understand the concept better. Once they become efficient I print it off in black and use it for a timed test.
Teaching is a career change for me. I spent almost 20 years in the engineering field. I am now going into my 9th year of teaching math in the middle school.