NCERT Textbook Solutions for Class 9 Maths Chapter 1 Number Systems updated for New Session 2025-26 in Hindi and English Medium. NCERT 9th Mathematics textbook chapter 1 introduces the concept of real numbers, including rational and irrational numbers and explains their properties in detail. CBSE Class 9 Maths Notes Chapter 1 Number Systems Pdf free download is part of Class 9 Maths Notes for Quick Revision. Here we have given NCERT Class 9 Maths Notes Chapter 1 Number Systems. Introduction to number system class 9 The collection of numbers is called the number system . These numbers are of different types such as natural numbers, whole numbers, integers, rational numbers and irrational numbers. Let us see the table below to understand with the examples. Chapter 1 of the Class 9 NCERT Mathematics textbook, " Number Systems," introduces students to the different types of numbers that form the foundation of mathematics. This chapter covers the classification of numbers, including natural numbers, whole numbers, integers, rational numbers, and irrational numbers. It also explains how to represent these numbers on the number line and discusses important concepts such as decimal expansions, operations on real numbers, and the existence of ...
