Mental math is a good skill performing math calculations in your head without a calculator or paper. Mental Mathematics Set-3 contains two books 4 and 5. These books cover various topics like counting, adding, subtracting, shapes, patterns, and more. Perfect as at-home learning or after school, this is wonderful book includes the practice needed to provide students with a strong mathematical foundation for ongoing success. • Ideal for age-group 4-12 years • Two adorable books • Handy tips about calculations • Plenty of exercises • Charming cover These books are aimed at serving as an active guide for acquiring quick methods of calculations. This set of books is bound to be useful not only during the school stage but in practical life also when the students have grown up to enter life.