Mental Arithmetic is the art of making calculations verbally without using any calculator or even the abacus. This method of making calculations, sharpens the child brain and develops memory, concentration speed, accuracy and grasping ability. The syllabus designed carefully by ( the team of ) Master Mind Abacus stimulates the mind of child increases analytical and creative powers, improves concentration learning and observation power which are must whether it is in school university or later in professional life.