■ How to play ■ All 4 modes (addition, subtraction,multiplication,division) are prepared. 1. Choose your favoritecalculation method2. Choose difficulty level 3. Game Start! Let'ssolve manyquestions within the time limit. Every time you answercorrectly,time and score will increase. Be careful as timedecreases if it isincorrect! You can get a high score by clearingdifficultquestions. Speedy and accurate solving is a hint to highscore.Since we can review the question after the end of one game,It isalso possible to recheck the question solved. Please use itforyour daily brain train.