Class 10 Maths Important Chapters for CBSE 2025: What to Focus On

How to Use This Guide

Class 10 Maths can feel overwhelming, but it becomes much simpler when you know which chapters carry the most marks. This guide breaks down the CBSE Class 10 Maths syllabus for 2025 by chapter, tells you the expected marks weightage, and gives you practical tips for each section. Use this to plan your study time smartly.

CBSE Class 10 Maths: Chapter Weightage Overview

The Class 10 Maths paper is worth 80 marks (with 20 marks for internal assessment). The chapters are grouped into units, and each unit has a set number of marks.

• Number Systems: 6 marks
• Algebra: 20 marks (this is the highest-scoring unit)
• Coordinate Geometry: 6 marks
• Geometry: 15 marks
• Trigonometry: 12 marks
• Mensuration: 10 marks
• Statistics and Probability: 11 marks

Chapter-by-Chapter Breakdown

1. Real Numbers (6 marks)

This chapter covers the Fundamental Theorem of Arithmetic, irrational numbers, and decimal expansions. Euclid's Division Lemma type questions appear often. It is a short chapter — do not skip it, as the questions here are usually straightforward.

2. Polynomials (Algebra — 20 marks total)

Understand the relationship between zeroes and coefficients of a polynomial. Questions on quadratic polynomials and their graphical representation are common. Practice finding zeroes of polynomials.

3. Pair of Linear Equations in Two Variables

This is one of the most important chapters. Learn all three methods: substitution, elimination, and graphical. Word problems based on linear equations come up every year. Spend good time here.

4. Quadratic Equations

Very important. Know how to solve using the formula, factoring, and completing the square. Nature of roots (discriminant) is asked frequently. Practice word problems — they often trip students up.

5. Arithmetic Progressions (AP)

Learn the formulas for nth term and sum of n terms. AP word problems are common in the paper. This is a scoring chapter if you practise regularly.

6. Triangles (Geometry — 15 marks total)

Similarity of triangles and the Basic Proportionality Theorem are key. Proof-based questions from this chapter are asked every year. Do not skip theorems — understand them with diagrams.

7. Coordinate Geometry (6 marks)

Distance formula, section formula, and area of a triangle using coordinates. Usually 1 to 2 questions in the paper. Straightforward if you remember the formulas.

8. Introduction to Trigonometry (Trigonometry — 12 marks total)

Memorise the trigonometric ratios and identities. Proving identities is a must-practise topic. This chapter rewards consistent practice more than any other.

9. Applications of Trigonometry

Height and distance problems. These are word problems using sin, cos, and tan. Usually 1 big question worth 4 to 5 marks. Draw diagrams carefully before solving.

10. Circles (Geometry)

Tangent to a circle and its properties. Proof-based questions appear here too. Learn the theorems — they are frequently tested.

11. Areas Related to Circles (Mensuration — 10 marks total)

Perimeter and area of sectors and segments. Combination of shapes (rectangle + semicircle, etc.) is a common question type. Practise a variety of such problems.

12. Surface Areas and Volumes

Combination of solids — like a cylinder with a cone on top. Conversion of one solid to another. These questions carry good marks and are very doable with practice.

13. Statistics (Statistics and Probability — 11 marks total)

Mean, median, and mode for grouped data. At least one of these comes in every paper. Know all three formulas and when to use which method.

14. Probability

Basic probability, theoretical probability, and simple word problems. Usually 1 to 2 questions. Easy marks if you understand the concept.

A Simple Study Plan

Start with Algebra (Chapters 3, 4, 5) as they carry the most marks. Then move to Trigonometry and Geometry. Do Statistics last — it is formulaic and quick to revise. Aim to finish the syllabus at least 4 weeks before your exam so you have time for past papers and revision.

Need Extra Help With Maths?

If certain chapters are still unclear after self-study, a tutor who specialises in Class 10 Maths can help you strengthen those areas quickly. Find a Class 10 Maths tutor near you at TuitionsInIndia.com/search — compare tutors, check their rates, and start learning today.