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Karnataka Board Class 9 Mathematics — Formula Sheet

Karnataka Board Class 9 Mathematics formula sheet, chapter by chapter — 23 formulas across 6 chapters. Follows the KSEEB / PUE syllabus.

How to Use the Formula Sheet

  1. Write, don't just read — writing each formula out helps it stick.
  2. Understand the derivation — you can rebuild a formula you half-remember.
  3. Group related formulas — link the ones that build on each other.
  4. Test yourself — cover the sheet and write the formulas from memory.

Chapter-Wise Formulas — 6 Chapters

1

Number Systems

2 entries
Construct right triangles with appropriate sides to find √n
Examples: √2, √3, π, 0.10110111011110...
The full Number Systems formula sheet
3

Polynomials

7 entries
Zero of p(x): A value 'a' such that p(a) = 0
Finding zeros: Solve the equation p(x) = 0
Linear polynomial: exactly one zero at x = -b/a
Division: p(x) = (x - a) × q(x) + p(a)
A polynomial p(x) = aₙxⁿ + aₙ₋₁xⁿ⁻¹ + ... + a₁x + a₀ where aₙ ≠ 0.
The full Polynomials formula sheet
5

Coordinate Geometry

2 entries
Any point on x-axis has y-coordinate = 0, so form is (x, 0)
Any point on y-axis has x-coordinate = 0, so form is (0, y)
The full Coordinate Geometry formula sheet

3 more chapters below

Formula sheets for all 6 chapters with formulas.

Get the Formula Sheets

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Frequently Asked Questions

Where can I find Karnataka Board Class 9 Mathematics Formula Sheet?

This page has formula sheet for 6 chapters of Karnataka Board Class 9 Mathematics for the 2026-27 session. Each chapter links to its own page with the full set.

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Learn the formulas you use most first, and understand what each symbol means so you can apply them. Knowing where a formula comes from helps you rebuild it if you forget it in the exam.

Browse Formula Sheet by Chapter

6 chapters

1

Number Systems

3

Polynomials

5

Coordinate Geometry

7

Linear Equations in Two Variables

8

Heron's Formula

10

Surface areas and Volumes

More Mathematics Resources

Karnataka Board Class 9

Practice Quiz

Test yourself with quick quizzes

Important Questions

Exam-style questions with answers

Revision Notes

Key concepts and quick revision points

Chapter Summary

Understand each chapter at a glance

Flashcards

Quick-fire cards for active recall practice

Syllabus

Chapter list and the topics in each

Other Karnataka Board Class 9 Subjects

Science