Arithmetic: Have fun adding, substracting,
multiplying, dividing, squaring, and taking roots.
There is also another Addition game
with a different choice of the values.
Calculations with fractions: Remember how much fun
it is to discover that 16/18 represents the same number than 8/9? If yes, you will
find this game fun and never stop playing. If no, you should play to experience the fun.