1 Minute Mental Arithmetic 與 Math Sprint - Mental Math Game 使用情況與統計

Challenge your limit of mental maths speed! HOW TO PLAY 　Answer 30 questions as fast as possible. FEATURE ・Various Modes 　　3 difficulty levels (EASY, NORMAL, HARD) 　　5 operations (ADD, SUB, MUL, DIV, MIX) ・World Ranking 　　You can see your ranks at a glance. ・Self Ranking 　　You can enjoy fighting with yourself. ・Simple Design 　　You can focus on questions. ・Selectable Backgrounds 　　You can change the background according to your mood.