Possibly the best math game ever. The 24 Challenge is a fast-pace game that challenges people to make 24 given 4 numbers and the 4 basic operations.
The game is played with official 24 game cards, each card consists of 4 numbers between 1 and 9.
The object is to get a total of 24 with just those 4 numbers, and you compete with other players in an attempt to figure the card out first.
Example: The numbers on the card are 1, 2, 3, 4
one of the possible answers are 2x4 = 8, 8x3=24, 24x1=24
Each card has up to and including 3 dots. The more dots a card has, the harder that card will be. There also exist many different versions of this math game including cards that have numbers bigger than 9, and cards inwhich you can use exponents and square roots.