Jumping Jack Flash

Similar to rock, paper, scissors.  Students find a partner and says Jumping, Jack, Flash.  On the word flash they show a number on their fingers (up to five, depending on the age of the student).  The students try to be the first one to add up their number and their partners number.  After a game both players move on and find someone else to play.  Progress to using subtraction (subtract smaller number from larger number) and/or multiplication for older students.