NCERT Class 9 Maths Chapter 1 PDF Download | Number System

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This NCERT Class 9th maths first chapter PDF is the latest edition of the NCERT book which has been published by the National Council of Educational Research and Training (NCERT). This latest NCERT Book for Class 9 Maths explains all the concepts and theorems in an explanatory way which makes learning quite simple and effective.

NCERT Class 9 Maths Chapter 1 summary

  • CBSE Class 9th Maths Chapter 1 starts with an introduction to the number system using some examples (using number lines), with exercise problems.
  • Next, the chapter deals with a detailed explanation of irrational numbers followed by coverage of real numbers and their decimal expansion.
  • Later, the chapter explains in detail the representation of numbers on a number line, followed by operations on real numbers.
NCERT Class 9 Maths Chapter 1 PDF Download

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