Math

Money

http://www.sheppardsoftware.com/math.htm

http://www.sheppardsoftware.com/mathgames/matching/memoryMath_coins_level1.htm

http://www.netrover.com/~kingskid/money_games.htm

http://www.mathsisfun.com/money/index.html

Time

http://resources.oswego.org/games/StopTheClock/sthec1.html

http://www.oswego.org/ocsd-web/games/StopTheClock/sthec2.html

http://www.oswego.org/ocsd-web/games/StopTheClock/sthec3.html

http://www.oswego.org/ocsd-web/games/StopTheClock/sthec4.html

Addition and Subtraction

http://www.playkidsgames.com/games/Tunnel/addFrame.htm

http://www.oswego.org/ocsd-web/games/SumSense/sumadd.html

http://www.oswego.org/ocsd-web/games/SpeedGrid/Addition/urikares.html

http://www.oswego.org/ocsd-web/games/SpeedGrid/Subtraction/urikasub1res.html

http://www.oswego.org/ocsd-web/games/mathmagician/cathymath.html

Thinking/Strategy 

http://www.coolmath-games.com/0-bloxorz/index.html

http://www.coolmath-games.com/

http://www.kidscom.com/games/tangram/tangram.html

http://www.mathisfun.com/

http://www.e-learningforkids.org/index.html

http://www.classbrain.com/cb_games/cb_gms_bag/lemonade.html