Check out these 10 Thanksgiving logic puzzles practicing addition and subtraction to 1000! They're the PERFECT math enrichment worksheets for 2nd and 3rd grade! November brain teasers fit easily in math centers: fast finishers use their critical thinking skills to find the 3 digit missing addends using addition and subtraction fact families. Put these in math stations, morning work, gifted students independent practice, early finishers, math enrichment papers, morning work, problem of the day, o