A great way for students to practice their addition and subtraction facts. At the same time, they will be stretching their reasoning skills as they figure out which blank square they can fill in next. The puzzles can be used as homework, regular classroom work, a reward for those who finish work early, or as an activity in a math learning center. The resource includes 30 puzzles (2 per page). Please visit my TpT store for more puzzles: Evelyn Christensen Puzzles-Math-and-More.