This book is a part of a series of middle-school mathematics workbooks, written according to the CBSE syllabus. The book supplements the textbooks followed in the schools. Key features Each chapter in the book has a number of sections. Each section begins with variety of solved problems. Information necessary for solving problems provided where required Each chapter ends with a worksheet (Expert Level), which has problems from the entire chapter as well as problems based on new ideas and applications. The solved questions will help students to solve all kinds of NCERT textbook problems as well as the NCERT exemplar problems.