That mathematics is important in our lives is a known fact. We use it for simple tasks like counting our change after a purchase or telling time. Mathematical calculations are even part of common activities like driving, cooking, and sports. It is an essential part of scientific study and business. To be skilled in the area of mathematics, it is essential to develop logical skills of the mind. Mental mathematics plays a crucial role here. The regular use of the books in the series Mental Mathematics will help to develop a child’s calculating ability and sharpen his mind. The books are graded and he exercises are according to the child’s mathematical ability at a particular stage. They also increase a child’s interest in the subject and as a result, regular lessons in mathematics are not boring or difficult.