Play game Shumujong by IceStone on this site available for free of cost, please share it with your friends.
About Shumujong game:
Small game for real mathematicians. The authors have managed to combine the classic puzzle game Mahjong and training program. It is necessary to look at the same picture, and the sum of the two numbers. top of the screen you will see what kind of bag you will search by adding the numbers on the game board tiles. Dial as many points and show their numeracy!