Print out each of the addition problems and laminate for durability. The answer sheet may be used or students may use notebook paper. Give each student a card to place on their desk. Students will solve the subtracion problem and then "scoot" around the room to solve all 24 problems. This is a great warm up or assessment for the end of a 2 digit subtraction with regrouping unit. My students love getting up and moving around while doing math. You could also use it as an "subtraction around the room" game. If you have any questions or need more cards, please let me know! Thanks for purchasing!!