Your students will have a blast playing this fun game for math review. This is an entire class activity where they move around the room quietly to solve all sixteen math problems. All of the problems in this set include adding 3-digit numbers with regrouping. You can use this as a formative assessment to see what your students know or just for review.
This game is labeled 3rd, but would be good for higher 2nd, and lower 4th as well.