Latest edition of NCERT Class 9 Maths Chapter 1 Number System is available here. Download the full chapter in PDF format along with the accurate NCERT Solutions for the chapter.

Chapter 1, Number System is one of the important chapters of Class 9 NCERT Textbook. Concepts given in this chapter are frequently used in other chapters of Class 9 Maths.

The latest NCERT Class 9 Mathematics Book for the 2025–26 academic session is now available for download in chapter-wise PDF ...