Mental Maths Three The mental maths series aims at enhancing mathematical aptitude and sharpen computational skills for the proficiency of the subject mathematics. Exercise in these books, clarify the various concepts, and help the young learners solve problems efficiently and correctly. The exercises are well-graded so that children move from simple to complex problems smoothly. The sums are to be solved mentally without any written calculations. these books encourage the child to think and discover the various hidden patterns and relationships.