How about a math lesson, it will be taught to you by the game Mathematics: Master of Arithmetic and today you are offered an arithmetic test. Within five seconds, you must check the example and give an affirmative or negative answer by clicking on the appropriate button below the example. If you meet the allotted time, you will receive another five seconds for the next answer. You can only make three mistakes. Your accumulated points are saved and entered into the leaderboard. If you want to take first position, you will have to try hard in Mathematics: Master of Arithmetic.