Our quick, easy-to-play card games boost operations skills—with every match! The set features 15 games that gradually progress in difficulty, each with 16 game cards in a storage pouch. Children just grab a pouch, then work on their own to solve addition and subtraction problems, multiplication and division problems, and more! You get a total of 240 game cards and an activity guide with an answer key. Box measures 10 1/2".