fractions
here is some link that has games about fractions in it:
http://www.bbc.co.uk/skillswise/game/ma17frac-game-dolphin-racing-fractions
http://www.bbc.co.uk/schools/ks2bitesize/maths/number/fractions_basic/play.shtml (ı pefer thıs link. but please look at two of the links because i think ıf you dont lıke one you wıll lıke the other).