Dear Gamer, please watch this ads while your game is loading. Thanks!
Use your Keyboard to type the answers.
If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Solve as many operations as you can before the time runs out!
The countdown is only 10 seconds, but you get a little time bonus for each right answer.
Solve 10 operations in a row to reset the countdown.