Have a look at these sites, some are about long division and others are about multiplication!
http://www.bbc.co.uk/skillswise/game/ma12pape-game-written-multiplication
http://www.coolmath4kids.com/long-division/index.html
http://www.multiplication.com/games
http://www.counton.org/games/flash/virtualmathfest/dinosaur.swf
http://resources.oswego.org/games/SumSense/summulti.html
Have fun!
Mr Coates.
