A plus Math http://www.aplusmath.com/games/
AAA Math http://www.aaamath.com/
Absurd Math http://www.hrmvideo.com/abmath/
Basket Math http://www.scienceacademy.com/BI/
Batter's Up Baseball (Math Games) http://www.prongo.com/math/
Brain Teasers and Math Puzzles http://www.syvum.com/teasers/
COLORFUL MATHEMATICS http://www.math.ucalgary.ca/~laf/colorful/colorful.html
Cool Math for Kids http://www.coolmath4kids.com/
Cut the Knot http://www.cut-the-knot.com/content.shtml
Education Place http://www.eduplace.com/math/brain/
Elementary Brain Teaser http://www.olemiss.edu/mathed/brain/brainold.htm
Figure This http://www.figurethis.org/challenges/math_index.htm
Flashcards for Kids http://edu4kids.com/math/
FunBrain http://www.funbrain.com/
gamequarium. http://www.gamequarium.com/math.htm
Games - Online Math Games http://homeschooling.about.com/cs/gamesmath/
Harcourt School Publisher http://www.harcourtschool.com/menus/l_math.html
Interactive Fun Puzzles http://www.vtaide.com/png/puzzles.htm
JAVA Gallery of Interactive Geometry http://freeabel.geom.umn.edu/java/
Learning Planet http://members.learningplanet.com/directory/index.asp?sub=ma
Math Cats http://www.mathcats.com/
Math dot Com http://www.math.com/students/puzzles/puzzleapps.html
Math Games for Kids http://www.kidsdomain.com/games/math2.html
Math Games for Young Kids http://www.kidsdomain.com/games/math1.html
Math Puzzles http://school.discovery.com/brainboosters/ - number
Math Year 2000 http://www.mathsyear2000.org/games/index.shtml
Mega Math http://www.bbc.co.uk/education/megamaths/
Mega Mathematics http://www.c3.lanl.gov/mega-math/
Multiplication dot Com http://www.multiplication.com/interactive_games.htm
Power Math http://www.mathpower.com/funstuff.htm
Primary Games http://www.primarygames.com/math.htm
Quia http://www.quia.com/dir/math/
Room 108 http://www.netrover.com/~kingskid/Math/math.htm
Simple Math-Code Games http://www.enchantedlearning.com/subjects/dinosaurs/activities/math-code/
Surf Net Kids http://www.surfnetkids.com/games/Math_Games/
The Learning Kingdom http://www.learningkingdom.com/playground/index.html