CBSE Class 12 Maths chapter-wise weightage 2027
How the board shares out the 80 theory marks of the 2027 Class 12 Maths exam, unit by unit, with the chapters in each unit. From CBSE's 2026-27 curriculum, checked on 2026-11-10. JEE Main is set from the same NCERT chapters, so for it every chapter counts; these weights are where the board puts its marks.
| Unit | Chapters | Marks | Share |
|---|---|---|---|
| Relations and Functions | 1. Relations and Functions 2. Inverse Trigonometric Functions | 8 | 10% |
| Algebra | 3. Matrices 4. Determinants | 10 | 13% |
| Calculus | 5. Continuity and Differentiability 6. Application of Derivatives 7. Integrals 8. Application of Integrals 9. Differential Equations | 35 | 44% |
| Vectors and Three-Dimensional Geometry | 10. Vector Algebra 11. Three Dimensional Geometry | 14 | 18% |
| Linear Programming | 12. Linear Programming | 5 | 6% |
| Probability | 13. Probability | 8 | 10% |
| Total | 80 | 100% |
Plus 20 marks for internal assessment. Where a unit has more than one chapter, the board gives marks to the unit, not to each chapter.
Where the marks are
The paper: 38 questions, 80 marks, 3 hours
| Section | Questions | How many | Marks each | Total |
|---|---|---|---|---|
| Section A | 18 multiple-choice and 2 assertion-reason | 20 | 1 | 20 |
| Section B | Very short answer | 5 | 2 | 10 |
| Section C | Short answer | 6 | 3 | 18 |
| Section D | Long answer | 4 | 5 | 20 |
| Section E | Case study | 3 | 4 | 12 |
From CBSE's 2026-27 sample question paper (PDF). Internal choice is given in some questions.
How to use this
- Start with Calculus and Vectors and Three-Dimensional Geometry: together they are 49 of the 80 marks.
- Do not skip a small unit: Linear Programming is 5 marks, often in short questions you can be sure of.
- Find your weakest chapter first: a free 25-minute test names it, then practise it on its page.
Practise the whole paper: free Class 12 Maths sample papers, set to these weights.
Questions students ask
Relations and Functions: 8 marks; Algebra: 10 marks; Calculus: 35 marks; Vectors and Three-Dimensional Geometry: 14 marks; Linear Programming: 5 marks; Probability: 8 marks. Total 80 marks in the theory paper, plus 20 for internal assessment.
Calculus, with 35 of 80 marks, then Vectors and Three-Dimensional Geometry with 14.
No. The unit marks in CBSE's 2026-27 curriculum are the same as in 2025-26.
38 questions for 80 marks in 3 hours: Section A, 20 × 1 mark (18 multiple-choice and 2 assertion-reason); Section B, 5 × 2 marks (very short answer); Section C, 6 × 3 marks (short answer); Section D, 4 × 5 marks (long answer); Section E, 3 × 4 marks (case study).
Source: CBSE curriculum 2026-27, Maths. Unit marks from CBSE's 2026-27 curriculum; question pattern from CBSE's 2026-27 sample question papers. Read on cbseacademic.nic.in on 2026-11-10. Unit marks are unchanged from 2025-26.