CBSE Class 10 Mathematics chapter-wise weightage
What the 2023–2026 board papers actually asked, chapter by chapter.
CBSE gives marks to units, not to chapters. Each unit below shows the marks CBSE’s 2025-26 syllabus gives it, and under it how the marks in the 2023–2026 papers actually split between its chapters.
| Chapter | 2023 | 2024 | 2025 | 2026 | Average |
|---|---|---|---|---|---|
| NUMBER SYSTEMSCBSE: 6 of 80 marks (7.5%) · in the papers: 6.6% | |||||
| Real Numbers | 7.4% | 5.7% | 6.8% | 6.6% | 6.6% |
| ALGEBRACBSE: 20 of 80 marks (25.0%) · in the papers: 23.0% | |||||
| Polynomials | 5.3% | 4.4% | 6.4% | 4.7% | 5.2% |
| Pair of Linear Equations in Two Variables | 3.2% | 6.8% | 11.6% | 7.0% | 7.2% |
| Quadratic Equations | 4.6% | 5.0% | 3.3% | 1.6% | 3.6% |
| Arithmetic Progressions | 11.5% | 5.6% | 5.0% | 5.9% | 7.0% |
| COORDINATE GEOMETRYCBSE: 6 of 80 marks (7.5%) · in the papers: 7.0% | |||||
| Coordinate Geometry | 7.8% | 6.2% | 6.4% | 7.4% | 7.0% |
| GEOMETRYCBSE: 15 of 80 marks (18.8%) · in the papers: 16.5% | |||||
| Triangles | 8.1% | 6.5% | 9.6% | 10.6% | 8.7% |
| Circles | 10.3% | 6.8% | 6.8% | 7.3% | 7.8% |
| TRIGONOMETRYCBSE: 12 of 80 marks (15.0%) · in the papers: 17.8% | |||||
| Introduction to Trigonometry | 10.0% | 10.6% | 8.3% | 11.7% | 10.2% |
| Some Applications of Trigonometry | 8.5% | 11.3% | 4.7% | 5.9% | 7.6% |
| MENSURATIONCBSE: 10 of 80 marks (12.5%) · in the papers: 12.1% | |||||
| Areas Related to Circles | 4.3% | 6.4% | 4.0% | 3.9% | 4.6% |
| Surface Areas and Volumes | 6.8% | 7.1% | 7.8% | 8.2% | 7.5% |
| STATISTICS AND PROBABILITYCBSE: 11 of 80 marks (13.8%) · in the papers: 15.1% | |||||
| Statistics | 6.9% | 6.4% | 11.7% | 11.2% | 9.0% |
| Probability | 5.3% | 6.8% | 7.4% | 4.7% | 6.1% |
How this is counted
From all 1,294 questions in the 2023–2026 CBSE Class 10 Mathematics papers we hold: every region and set, with a question printed in several sets counted once. A chapter’s share is its marks divided by all the marks of that year’s questions, and the average gives each year equal weight. These are observed shares, not an official CBSE weightage. 2022 is left out: it was the Term-II exam, which covered only part of the syllabus (see the 2022 paper).
Unit marks are CBSE’s own, from the 2025-26 syllabus. Where CBSE groups units under one figure, so does this table.