Here is the game which is quite interesting not only for children, but also for grown-ups.
While playing this game you have a great opportunity to examine your mental calculation skills.
There three levels in this game.
While playing the easy level you should do problems within the limits from 1 to 10. While playing the second level you should do the problems within the limits from 1 to 20. While playing the third level, the most difficult one, you should do the problems within the limits from 1 to 100. The number of various answers to choose the right one is growing at each level.
The aim of the game is to solve as many problems within 1 minute as you can and to do fewer mistakes.
At the end of the game you will be able to see all you results. So, you will know how fast you are at counting.
The problems are changed at every game. So, you can play this game every time as you play it for the very first time.
Share your results in the comments. It will be much more exciting!