Math Magician - Practice your math facts and print out a certificate!http://www.oswego.org/ocsd-web/games/Mathmagician/cathymath.html
Math Missiles - Aim at the Answer As Quick as you Canhttp://www.mrnussbaum.com/command.htm
Cyberchase - Lots of fun math gameshttp://www.pbskids.org/cyberchase/games.html
Math Cats - These cats know their math!http://www.mathcats.com/
Johnnie's Math Page - There is SO MUCH in here, arithmetic, fractions, telling time, money, tesselations, geo board... What's your favorite?http://everyschool.org/u/ohlone/admin/JIMS.html
Math Doodles Number Jump - Fall in an opening to go DOWN a level, jump just below an opening to bounce UP...squish all the bugs using math.http://www.carstensstudios.com/mathdoodles/numberjump.htm
Cross the Swamp - Click on the calculator to jump the lilypadshttp://www.bbc.co.uk/schools/starship/maths/games/cross_the_swamp/big_sound/full.shtml
Dynamo's Den Games - These games are from England so the money will look different...but you can figure it out!http://www.bbc.co.uk/education/dynamo/den/den.htm
Rainforest Mathhttp://www.rainforestmaths.com/
Math Fact Cafe - design your own fact sheets For example: Add or Multiply, Min Range: 0 to 12, Max Range: 0 to 12http://www.mathfactcafe.com