Flashy by design! Build student confidence and skills using fun-filled flash cards. These cards, complete with activities, reinforce subtraction facts through 12. Watch students enjoy learning and build skills on their own or with their friends ... at school, home, or on the go! Durable, no-see-through cards. Quick sorting, rounded corners. Self-checking, answers on card backs. 56 two-sided cards, 3 1/8" x 5 1/4".