Download Class 9 Maths Ganita Manjari Chapter 3 The World of Numbers PPT (43 slides) + notes free. Rational, irrational & real numbers. No login — Unique Study Point.
This free PPT Slides for CBSE Class IX Maths, Chapter 3: The World of Numbers, contains a chapter-wise PowerPoint presentation with visual slides, diagrams and key points for classroom and self-study. It has been prepared by Sumeet Sahu at Unique Study Point, Indore, strictly following the latest NCERT syllabus for Session 2026-27.
Download the complete The World of Numbers Class 9 PPT (43 slides) with notes, free from Unique Study Point. Covers the full Chapter 3 of the new NCERT Ganita Manjari textbook (Session 2026-27) — no login, no sign-up needed.
Natural numbers, whole numbers, the invention of zero, integers, rational numbers, irrational numbers and real numbers — with properties (closure, commutative, associative, distributive), terminating and non-terminating decimal expansions, and number line representation.
Brahmagupta\'s rules for zero and negative numbers (fortune and debt), the Ishango Bone and its primes 11, 13, 17, 19, Baudhayana\'s Shulbasutra and the value of root 2 — the historical topics now asked in case-based questions.
The slides support NCERT Exercise Sets 3.1 to 3.5, MCQs, assertion-reason and case-study style questions from the chapter.
We are the only site giving you a ready-made 43-slide presentation for this chapter — not just notes. Students revise faster, teachers teach directly. 100% free, no login, no sign-up.
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| Class | Class IX (CBSE / NCERT) |
| Subject | Maths |
| Chapter | Chapter 3: The World of Numbers |
| Resource Type | PPT Slides |
| Session | 2026-27 (Latest NCERT Syllabus) |
| Downloads | 215+ |
| Prepared by | Sumeet Sahu, Unique Study Point, Indore |
| Cost | Free |