Students play tic-tac-toe while practicing subtraction with regrouping (up to four digits).
Players take turns solving a subtraction problem. If the player gets the problem correct, he or she can place an X or O in that space. Play continues like regular Tic-Tac-Toe until someone gets three in a row (horizontally, vertically, or diagonally).
Laminate and use with dry erase markers for repeated use.
This download includes six different game boards with answer keys.