CLASS 10 MATHS CBSE SYLLABUS WITH DELETED TOPICS AND IMPORTANT CHAPTERS

Class 10 Maths CBSE Syllabus with Deleted Topics and Important Chapters

Class 10 Maths CBSE Syllabus with Deleted Topics and Important Chapters

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The Class 10 Mathematics syllabus is very important for every student. It is carefully made by CBSE to help students learn maths in a step-by-step way. These chapters are not only important for the board exam but also help in real life and future studies.

The syllabus is designed to build strong basic knowledge and improve thinking and problem-solving skills. It teaches students how to understand and apply maths instead of just memorizing formulas. 

CBSE has added both written exams and internal assessments like projects and activities, which makes learning more interesting and complete. This syllabus helps students prepare for higher classes and entrance exams.

CBSE class X Maths syllabus for 2025-26 gives the base students need to succeed in academics and everyday situations. It is a well-balanced and helpful syllabus that supports clear understanding and confident learning.

Breakdown of Class 10 Maths Syllabus 2025-26


Total Marks: 100 

  • Theory Paper: 80 Marks

  • Internal Assessment: 20 Marks


Theory


Chapters included in CBSE Class 10 Maths syllabus:

UNIT I: NUMBER SYSTEM (06 MARKS)

 

  • Real Numbers


 

This chapter introduces different types of numbers like rational, irrational, surds, and π. It also explains how real numbers are placed on a number line.

UNIT II: ALGEBRA (20 MARKS)

 

  • Polynomials


 

Students learn about polynomials and their types: linear, quadratic, and cubic. The chapter also covers basic operations like addition, subtraction, and multiplication of polynomials.

 

  • Pair of Linear Equations in Two Variables


 

This chapter focuses on solving equations with two variables using methods like graphing, substitution, and elimination. It explains when a system has one solution, many solutions, or no solution.

 

  • Quadratic Equations


 

Quadratic equations involve the x² term and can be solved using different methods such as factoring, the quadratic formula, or completing the square. The chapter also talks about the types of solutions these equations can have.

 

  • Arithmetic Progressions


 

This chapter covers number sequences where each term has a fixed difference from the previous one. It teaches how to find any term in the sequence and how to calculate the total of several terms.

UNIT III: COORDINATE GEOMETRY (06 MARKS)

 

  • Coordinate Geometry


 

Coordinate geometry explains how to plot points on a graph using x and y values. It also includes formulas for finding the distance between points and the midpoint of a line segment.

UNIT IV: GEOMETRY (15 MARKS)

 

  • Triangles


 

Students learn about the different types of triangles and their properties. The chapter includes theorems and rules related to triangle similarity and congruence.

 

  • Circles


 

The chapter explains the parts and properties of a circle, such as chords, tangents, and arcs. It also introduces important theorems and simple calculations related to circles.

UNIT V: TRIGONOMETRY (12 MARKS)

 

  • Introduction to Trigonometry


 

This chapter introduces trigonometric ratios like sin, cos, and tan. Students learn basic formulas and how these ratios are used in real-life problems involving angles and height.

 

  • Some Applications of Trigonometry


 

This chapter applies trigonometry to real-life situations such as finding the height of a building or the distance between objects using angles and lines of sight.

 

  • Heights and Distances


 

This topic covers the angle of elevation (when we look up at an object) and the angle of depression (when we look down at an object). Students will solve simple problems based on real-life situations using these angles. 

UNIT VI: MENSURATION (10 MARKS)

  1. Areas Related to Circles


Students learn to find the area of full circles, sectors, and segments. The chapter also covers the area of figures that include circular parts, like flowers or wheels.

  1. Surface Areas and Volumes


This chapter focuses on 3D shapes like cylinders, cones, and spheres. It teaches how to calculate their surface areas and volumes using standard formulas.

UNIT VII: STATISTICS AND PROBABILITY (11 MARKS)

  1. Statistics


Statistics includes data collection and analysis. Students learn how to find the mean, median, and mode, and how to represent data using graphs like bar charts and histograms.

  1. Probability


This chapter introduces the concept of probability and how to calculate the chance of an event happening. It includes simple problems based on real-life situations.

Internal Assessment 


Total Marks: 20 Marks

  • Pen Paper Test & Multiple Assessments: 10 marks

  • Portfolio: 5 marks

  • Lab Practical: 5 marks


Deleted Syllabus of CBSE Class 10 Maths


Being aware of what not to study in the syllabus is equally important as knowing what to study. This way you shall not waste cramming and practicing the topics that are no longer important. Lets us take a look at the deleted syllabus of class 10 maths:

Real Numbers

  • Euclid’s division lemma


  • Decimal representation of rational numbers in terms of terminating/non-terminating recurring decimals


Polynomials

  • Statement and simple problems on division algorithm for polynomials with real coefficients


Pair of Linear Equations in Two Variables

  • Simple problems on equations reducible to linear equations


Coordinate Geometry

  • Area of a triangle


Triangles

  • If a perpendicular is drawn from the vertex of the right angle of a right triangle to the hypotenuse, the triangles on each side of the perpendicular are similar to the whole triangle and to each other


  • The ratio of the areas of two similar triangles is equal to the ratio of the squares of their corresponding sides


  • In a right triangle, the square on the hypotenuse is equal to the sum of the squares on the other two sides

  • In a triangle, if the square on one side is equal to the sum of the squares on the other two sides, the angle opposite to the first side is a right angle


Constructions

  • Full chapter deleted


Trigonometric Identities

  • Only trigonometric ratios of complementary angles included


Surface Areas and Volumes

  • Frustum of a cone


  • Problems involving converting one type of metallic solid into another and other mixed problems (only with a combination of not more than two different solids)


Statistics

  • Step deviation method for finding the mean


  • Cumulative frequency graph


How to Make the Most Out of Your CBSE Class 10 Maths Syllabus


CBSE Class 10 Maths Syllabus is necessary to know if you want to score good marks in the subject. Let’s see how you can make the most of it:

  1. Make a timetable that you can actually follow. Don’t try to study everything in one day. Give more time to difficult topics and high-mark units. 

  2. Understanding the concept is more important than memorising formulas. Make sure you know why a formula works and how to use it. 

  3. Maths needs practice every day. Solve different types of questions from your NCERT book and sample papers.. Also, try solving previous years' papers to understand the exam pattern.

  4. If you don’t understand something, don’t wait. Ask your teacher, a friend, or use online videos to clear your doubt. Small doubts can become big problems later.

  5. Keep a separate notebook for formulas, theorems, and important rules. Write them neatly so that you can revise them quickly before tests. 

  6. When solving mock tests or sample papers, use a timer. Try to finish your paper within 3 hours and leave time for checking your answers.

  7. Practice word problems and understand how to apply formulas in different cases. 

  8. The internal assessment gives you 20 marks, which can improve your final score. Take your projects, tests, and practical work seriously. 

  9. Study daily and revise regularly. Don’t panic if you make mistakes , they help you learn. 


Prescribed Books for CBSE Class 10 Mathematics


To help students learn Mathematics in a clear and structured way, CBSE recommends a set of well-designed textbooks and resources. These books are published by NCERT and CBSE and cover both theory and practical activities. Below is the list of prescribed books for Class 10 Mathematics.

  • Mathematics - Textbook for Class IX (NCERT Publication)


  • Mathematics - Textbook for Class X (NCERT Publication)


  • Guidelines for Mathematics Laboratory in Schools, Class IX (CBSE Publication)


  • Guidelines for Mathematics Laboratory in Schools, Class X (CBSE Publication)


  • Laboratory Manual - Mathematics, Secondary Stage (NCERT Publication)


  • Mathematics Exemplar Problems for Class IX (NCERT Publication)


  • Mathematics Exemplar Problems for Class X (NCERT Publication)


In short, the Class 10 Maths syllabus by CBSE is a well-planned and useful course for students. It teaches important math topics that help in exams and everyday situations. The syllabus is simple, clear, and divided into units so that students can learn without stress.

It gives equal importance to learning, practicing, and applying maths in real life. Internal assessments like projects, tests, and practicals also help students understand better and score well.

Even if a student does not choose maths in higher classes, the knowledge from Class 10 will still be useful. CBSE has made this syllabus to help students learn maths in an easy and meaningful way. That’s why it is perfect for students and gives them a strong base for success in the future.

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