Read and download the Chapter 1 Number Systems PDF from the official NCERT Book for Class 9 Mathematics. Updated for the 2025-26 academic session, you can access the complete Mathematics textbook in PDF format for free.
NCERT Class 9 Mathematics Chapter 1 Number Systems Digital Edition
For Class 9 Mathematics, this chapter in NCERT Book Class 9 Maths Number Systems Questions provides a detailed overview of important concepts. We highly recommend using this text alongside the NCERT Solutions for Class 9 Mathematics to learn the exercise questions provided at the end of the chapter.
Chapter 1 Number Systems NCERT Book Class Class 9 PDF (2025-26)
(A) Main Concepts and Results
Rational numbers
Irrational numbers
Locating irrational numbers on the number line
Real numbers and their decimal expansions
Representing real numbers on the number line
Operations on real numbers
Rationalisation of denominator
Laws of exponents for real numbers
• A number is called a rational number, if it can be written in the form p/q , where p and q are integers and q ≠ 0.
• A number which cannot be expressed in the form p/q (where p and q are integers and q ≠ 0) is called an irrational number.
• All rational numbers and all irrational numbers together make the collection of real numbers.
• Decimal expansion of a rational number is either terminating or non-terminating recurring, while the decimal expansion of an irrational number is non-terminating non-recurring.
Please refer to attached file for NCERT Class 9 Maths Number Systems Questions
| NCERT Book Class 9 Maths Number Systems |
| NCERT Book Class 9 Maths Number Systems Questions |
| NCERT Book Class 9 Maths Polynomials |
| NCERT Book Class 9 Maths Polynomials Questions |
| NCERT Book Class 9 Maths Coordinate Geometry |
| NCERT Book Class 9 Maths Coordinate Geometry Questions |
| NCERT Book Class 9 Maths Linear Equations In Two Variables |
| NCERT Book Class 9 Maths Linear Equations In Two Variables Questions |
| NCERT Book Class 9 Maths Introduction To Euclids Geometry |
| NCERT Book Class 9 Maths Introduction To Euclids Geometry Questions |
| NCERT Book Class 9 Maths Lines And Angles |
| NCERT Book Class 9 Maths Lines And Angles Questions |
| NCERT Book Class 9 Maths Triangles |
| NCERT Book Class 9 Maths Triangles Questions |
| NCERT Book Class 9 Maths Quadrilaterals |
| NCERT Book Class 9 Maths Quadrilaterals Questions |
| NCERT Book Class 9 Maths Herons Formula |
| NCERT Book Class 9 Maths Herons Formula Questions |
| NCERT Book Class 9 Maths Surface Areas And Volumes |
| NCERT Book Class 9 Maths Surface Areas And Volumes Questions |
| NCERT Book Class 9 Maths Statistics |
| NCERT Book Class 9 Maths Statistics and Probability Questions |
Important Practice Resources for Class 9 Mathematics
NCERT Book Class 9 Mathematics Chapter 1 Number Systems
Download the official NCERT Textbook for Class 9 Mathematics Chapter 1 Number Systems, updated for the latest academic session. These e-books are the main textbook used by major education boards across India. All teachers and subject experts recommend the Chapter 1 Number Systems NCERT e-textbook because exam papers for Class 9 are strictly based on the syllabus specified in these books. You can download the complete chapter in PDF format from here.
Download Mathematics Class 9 NCERT eBooks in English
We have provided the complete collection of NCERT books in English Medium for all subjects in Class 9. These digital textbooks are very important for students who have English as their medium of studying. Each chapter, including Chapter 1 Number Systems, contains detailed explanations and a detailed list of questions at the end of the chapter. Simply click the links above to get your free Mathematics textbook PDF and start studying today.
Benefits of using NCERT Class 9 Textbooks
The Class 9 Mathematics Chapter 1 Number Systems book is designed to provide a strong conceptual understanding. Students should also access NCERT Solutions and revision notes on studiestoday.com to enhance their learning experience.
You can download the NCERT Book for Class 9 Mathematics Chapter 1 Number Systems for latest session from StudiesToday.com
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