All you need to play is a deck of cards. The students each take 3 cards. With those cards he/she tries to get as close to zero as possible.
You use addition, subtraction, multiplication, & division. Face cards are worth 10 and A can be used as 1 or 11. Once you have a total use the absolute value to see which player is closest to zero. The winner takes all the cards from that round. Keep playing until you are out of cards. The kids decided if there is a tie the players play a tie breaker round.
Ex: 10, 7, 4 10-7 = 3/4 = .75
