Description: A simple arithmetics trainer with three difficulty levels. Perfect for those, who want to practice arithmetics.
Instructions: * Press "Start" button to start the game.
* Chose the difficulty level(easy/medium/hard) by clicking on one of the three buttons.
* Choose the right answer from the set of given answers by clicking on it. If the answer was correct you'll see a "Correct" screen, click anywhere to close it. If the answer was "Wrong" or you didn't provide an answer in the given time interval you'll see a "Wrong" or a "Timeout" screen, click anywhere to close it.
* Continue answering the questions until you see the result screen.
* Click "Replay" if you wish to replay the game on a different difficulty level or on the same one.
