← Back to Class 9 Maths

The World of Numbers

Class 9 Mathematics • Ganita Manjari • Chapter 3

Chapter Overview

This chapter front page follows the same 3-card structure established for Chapter 2.

📘 Complete Notes

Chapter concepts, explanations, examples and revision notes.

❓ Important Questions

Separate exam-oriented practice questions with Hindi explanations and solutions.

📝 Exercises

All textbook exercise sets and End-of-Chapter questions.

Topics Covered

Topic links are ready for the Notes page.

The Human Need to Count The Revolution of Śhūnya Integers Rational Numbers Rational Numbers on the Number Line Absolute Value of a Rational Number Rational Numbers Between Two Rational Numbers Irrational Numbers Construction of √n on the Number Line The Story of π and Madhava’s Infinite Series Real Numbers & Imaginary Numbers Decimal Expansion of Real Numbers Magic of Cyclic Numbers Constructing a Square Root Spiral

Official NCERT Source

Open Official NCERT Chapter 3 →

Open Official Chapter PDF →