in the Internet , RoundGames is one of the most interesting flash games websites I found recently, they publish fresh games every day, you will spend a lot of time on that website probably.
Unsigned Int-I
This is a math puzzle game that starts easy with addition and subtraction. Later levels, which use multiplication and division, might have you scratching your head trying to solve them.
The Numbers 2
Practice basic arithmetic operations in this sequel of popular math game The Numbers!
BattleMath
Defend your house from monsters attack with your brain!
shooting number
This game is a education game to upgrade your mathematic skill
Mahjong Math
Math variation of classic mahjong game. Choose from different layouts and play. You should find the matching mahjong tiles.
Earth Typing Defense
Defend the earth from the asteroids storm. Type the asteroids names as fast as possible to target them with the deadly Earth laser and to destroy them before they reach the Earth surface.