Arithmetic Sprinter

5 excecise types.
Addition, subtraction, multiplication, division and read a clock.

You can improve your mental arithmetic with playing track and field games.
Track and field games has 5 events.
1... 100 meter dash.
2... 110 meter hurdles.
3... 200 meter dash.
4... 400 meter dash.
5... 400 meter hurdles.