These problems are all 3 digit addition and subtraction problems, both single and multi-step. The first section is problems separated by type: Combining, Comparing, Separating, and Missing Part. The second section contain an activity for students to cut apart the problems and sort them according to addition or subtraction and then solve. There is a third section that contains missing part subtraction problems 1 and 2 step, there are 17 different missing part problems that can be used as warm ups, cut apart and use in stations, etc. The last section contains 2 practices and 1 assessment of 3 digit addition and subtraction. Each of these are 10 questions. I know that we are always looking for more problems. Hope this helps you not have to think of quite so many.