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Weightage of Maths Class 12 Chapter Wise

by PW Gulf
November 7, 2024
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Class 12 Maths Chapter Wise Weightage: Class 12 Mathematics is one of the most important subjects for students preparing for their board exams. A good score in Maths can increase a student’s overall percentage and also help in competitive exams like JEE Main, CUET, and NDA.

Knowing about the Class 12 Maths Chapter Wise Weightage is important for students to score good marks. By studying according to weightage, students can focus more on high-mark chapters like Calculus, Vectors, and Probability.

Class 12 Maths Chapter Wise Weightage Overview

CBSE Class 12 Maths syllabus is divided into six major units. Each unit consists of several chapters together, making up the 80-mark theory paper. The remaining 20 marks are from internal assessments. 

In the 2025 board exam, the CBSE will follow the same pattern. The question paper will include MCQs, short answer questions, and long answer questions. The syllabus is designed to test your conceptual understanding and problem-solving skills.

CBSE Class 12 Maths Exam Pattern 2025

Students need to understand the CBSE Class 12 Board Exam first before checking for the chapter-wise weightage. The CBSE Class 12 Maths exam is conducted for a total of 100 marks, divided as:

  • Theory Paper: 80 marks

  • Internal Assessment: 20 marks

The exam duration is 3 hours. The paper includes both direct and application-based questions. The question paper format for the CBSE Class 12 Board Exam is as follows:

CBSE Class 12 Maths Exam Pattern 2025

Section

Type of Questions

Marks Per Question

Total Marks

A

Very Short Answer / MCQs

1

20

B

Short Answer Questions

2

20

C

Long Answer Questions

4

24

D

Case Study / Application-based

4

16

Total

   

80

CBSE Class 12 Maths Unit Wise Weightage

Class 12 Maths syllabus is divided into several units, which are allotted a specific mark weightage. The table provided below gives all the information related to the estimated chapter-wise weightage based on previous years' examinations. 

CBSE Class 12 Maths Unit Wise Weightage

Chapter

Weightage (Marks)

Relations and Functions

08

Inverse Trigonometric Functions

04

Matrices

05

Determinants

05

Continuity and Differentiability

09

Applications of Derivatives

04

Integrals

09

Applications of Integrals

06

Differential Equations

07

Vectors

07

Three-Dimensional Geometry

07

Linear Programming

05

Probability

08

Important Chapters for Class 12 Maths Board Exam

Some of the chapters included in the Class 12 Mathematics subjects are highly important in terms of their weightage in the board exam. The Important Chapters for Class 12 Maths Board Exam are as follows:

  1. Continuity and Differentiability – High-weightage topic with 9 marks; focuses on limits and derivatives.

  2. Integrals and Applications of Integrals – Around 15 marks; scoring and conceptual.

  3. Differential Equations – 6–7 marks; often direct questions.

  4. Vectors and 3D Geometry – 14 marks combined; numerical-based and scoring.

  5. Probability – 8 marks; needs practice to avoid calculation mistakes.

  6. Matrices and Determinants – 10 marks; essential for understanding transformations.

Deleted Syllabus for Class 12 Maths 2025

The Central Board of Secondary Education (CBSE) has reduced the Maths syllabus, keeping in view the pressure on students. For the 2025 board exams, certain topics have been removed. Students should refer to the latest official CBSE syllabus PDF before starting their preparation.

Deleted topics include:

  • Some parts of Sets and Relations (already covered in Class 11)

  • A few sections from Probability that involved advanced formulae

  • Some applications of Calculus for lengthier derivations

CBSE Class 12 Maths Internal Assessment Marks

The internal assessment is allotted 20 marks and plays an important role in a student’s final percentage. Students will be assessed by their teachers based on their class performance, lab manual work, and participation in mathematical activities. 

CBSE Class 12 Maths Internal Assessment Marks

Component

Marks

Periodic Tests (best 2 out of 3)

10

Mathematics Activities / Projects

10

Total

20

Weightage of Calculus, Vectors, and Algebra

Calculus, Vectors, and Algebra are allotted the highest weightage in the exam among all other units. These three units together make up nearly 75% of the total marks allotted to the theory paper.

To score high, students should focus on practising numerical questions from the said topics regularly and revise all formulas from the NCERT examples.

Weightage of Calculus, Vectors, and Algebra

Unit

Chapters

Weightage

Calculus

Continuity, Differentiation, Integration, Applications, Differential Equations

35

Vectors and 3D Geometry

Vectors, Direction Cosines, Planes

14

Algebra

Matrices, Determinants

10

How to Prepare for Class 12 Maths Exam?

Some simple and effective tips to prepare well for the CBBSE Class 12 Board Exam are as follows

  1. Study according to the weightage: Start with the high-weightage units like Calculus and Vectors.

  2. Use NCERT as the base book: All CBSE papers are based on NCERT concepts. Solve each example carefully.

  3. Make a formula Note: Revise all formulas daily to improve speed and accuracy.

  4. Practice previous year papers: This helps you understand question patterns and time management.

  5. Attempt sample papers every week: Helps identify weak topics early.

  6. Focus more on Conceptual Understanding: Learn the logic behind formulas and theorems.

  7. Keep time for revision: Revise at least twice before the board exam.

  8. Stay calm during the exam: Read each question carefully before solving.

CBSE 12th Maths Board Exam Tips

Some of the important CBSE 12th Maths Board Exam Tips to help the students score well in the exam are as follows:

  • Start with easy questions: This builds confidence and saves time.

  • Write step-by-step solutions: Even if your final answer is wrong, you can get step marks.

  • Draw diagrams in 3D Geometry: Visual representation adds clarity.

  • Recheck calculations: Silly errors often cost 5–10 marks.

  • Don’t leave any question blank: Attempt all, even if partly.

Class 12 Maths Chapter Wise Weightage FAQs

Q1: What is the overall exam pattern and marks distribution for CBSE Class 12 Maths (2025)?

Ans: The paper is 100 marks (80 theory + 20 internal), 3 hours long; Section A: MCQs/very short (20×1), B: short answers (10×2), C: long answers (6×4), D: case-study/application (4×4).

Q2: Which chapters carry the highest weightage and should be prioritised?

Ans: Focus on Calculus (Continuity, Differentiation, Integration — ~35 marks), Vectors & 3D Geometry (~14 marks combined), and Algebra (Matrices & Determinants — ~10 marks).

Q3: What is the chapter-wise weightage breakdown (important chapters)?

Ans: Key weights: Continuity & Differentiability 9, Integrals 9, Applications of Integrals 6, Differential Equations 7, Vectors 7, 3D Geometry 7, Probability 8, Matrices 5, Determinants 5, Relations & Functions 8, Inverse Trig 4, Linear Programming 5.

Q4: How important are internal assessment marks, and how are they awarded?

Ans: Internal assessment (20 marks) includes Periodic Tests (best 2 of 3 = 10) and Mathematics activities/projects = 10; these directly affect the final percentage, so maintain consistent class performance.

Q5: Have there been any syllabus deletions for 2025 that I should know about?

Ans: Yes — CBSE removed some parts (e.g., portions of Sets & Relations, advanced Probability sections, and lengthy calculus applications); always verify with the official CBSE syllabus PDF before studying.

Q6: What are the best preparation strategies based on weightage?

Ans: Study high-weight chapters first, use NCERT as the base, maintain a daily formula notebook, practice previous years’ papers and sample tests weekly, and revise concepts multiple times to reduce calculation errors.

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