9 years & up. Fun and easy to play, both teachers AND students enjoy it! Develop varied problem solving strategies with three levels of difficulty. Object of the game is to make 24 using all four numbers on a card. You can add, subject, multiply and divide, but use each number only once. There is at least one solution to every card. Can you make 24 first?! There is at least one solution to every card. 96 double sided cards. For one or more players.