CBSE Class 10 · Mathematics Standard (041) and Basic (241)

CBSE Class 10 Maths revision, chapter by chapter

Revision notes, original board-style questions with the step marks shown, and a four-step Route to 95 for every chapter. In the 80-mark board paper, Algebra carries 20 marks and Geometry 15, so those chapters repay revision first.

14 of 14 chapters ready
625 questions, each checked twice
Board paper: 80 marks, 3 hours, sections A to E

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Statistics · Section C style · 3 marks

Find the median of the distribution: $0$ – $10$ : $5$ , $10$ – $20$ : $8$ , $20$ – $30$ : $12$ , $30$ – $40$ : $10$ , $40$ – $50$ : $5$ .

Worked answer

Answer: $\frac{155}{6} \approx 25.83$

$n = 40$ , $\frac{n}{2} = 20$ ; cumulative frequencies $5, 13, 25, 35, 40$ , so the median class is $20$ – $30$ M1
Median $= l + \frac{\frac{n}{2} - c f}{f} \times h = 20 + \frac{20 - 13}{12} \times 10$ A1
$= 20 + \frac{35}{6} = \frac{155}{6} \approx 25.83$ A1

Chapters

In NCERT order, the order most schools teach. Every chapter has notes, practice by step, four checkpoints and the places marks are usually lost. Each card counts its questions by marks (as in sections A to E of the paper) and by difficulty, from 1 (easy) to 4 (HOTS).

Each chapter on one page: Class 10 knowledge organisers (key facts, formulas, mistakes to avoid). Section E practice: Class 10 case study questions, chapter-wise. Exam technique: competency-based questions · theorems and proofs · the last 30 days. Where you stand: Class 10 baseline test · 12-day pre-board revision plan · 4-week pre-board plan.

Where the 80 marks come from

CBSE publishes marks by unit, not by chapter (curriculum 2025-26, unchanged for 2026-27). The other 20 marks are internal assessment.

Unit	Marks	Chapters
Number Systems	6	Real Numbers
Algebra	20	Polynomials, Pair of Linear Equations in Two Variables, Quadratic Equations, Arithmetic Progressions
Coordinate Geometry	6	Coordinate Geometry
Geometry	15	Triangles, Circles
Trigonometry	12	Introduction to Trigonometry, Some Applications of Trigonometry
Mensuration	10	Areas Related to Circles, Surface Areas and Volumes
Statistics and Probability	11	Statistics, Probability

Every topic in every chapter, to tick off as you go: CBSE Class 10 Maths syllabus 2026-27 checklist (printable).

Examiner Insights: common mistakes in CBSE Class 10 Maths, with fixes (our analysis of public sources) →

Exam season: 12-day pre-board revision plan · Final exam countdown · Results day: what next? · All exam-season plans

How each chapter works

Step 1

Secure the basics

The one-mark questions of Section A: multiple choice and assertion–reason.

Step 2

Board standard

The two- and three-mark questions of Sections B and C.

Step 3

Full marks on long answers

Five-mark answers and case studies (Sections D and E), written so no step mark slips.

Step 4

95+ stretch

The harder items that separate 95 from 90.

Each step ends in a 3 to 4 question checkpoint. Pass at 80% to move on; results are saved to your Route to 95 and to a linked parent's dashboard.

Beyond the syllabus: the maths olympiad route (IOQM to IMO) with original IOQM-level practice sets, and competition-style problems for Class 10.

Parents: create a free account · Got a class code? Join your teacher's class

Sample papers on the 2026-27 pattern

When the chapters are secure, sit full papers against the clock: 80 marks, 38 questions, sections A to E, with a step-marking scheme. Original papers written to the CBSE pattern by us, not official CBSE papers.

Sample paper 1 · Board standard Sample paper 2 · Board standard Sample paper 3 · Above board Sample paper 4 · Above board Sample paper 5 · 95+ challenge All sample papers

Before the exam: Class 10 exam strategy, on step marking, the last 30 days, competency-based questions and proofs.

Board exam 2027: Class 10 important questions, chapter-wise, ordered by the unit weightage so you revise the heaviest units first.

Section A practice: Class 10 assertion–reason questions, one for every chapter.

Done them all? Take a timed full mock, a new 80-mark paper in the board pattern each time, or a 30-mark timed test on one chapter (CBSE Pro or the free trial).

Sitting the board exam in 2027? You still choose Mathematics Basic or Standard: how to choose.

Sitting the board exam in 2028 or later? There will be one common paper plus an optional 25-mark Mathematics Advanced paper, with two practice papers (paper 1, paper 2). Thinking about the optional second board exam in May? How the two Class 10 board exams work.

What's free

What is free for Class 10 without signing in?

The revision notes for every chapter, the important questions on each chapter page (half with their worked answers open), the MCQ and case-study sets, and our sample papers.

What does a free account add?

A free account (no card) adds 5 more practice questions on every chapter with instant feedback, full worked answers on free questions, and marking schemes for our sample papers. Every question in the chapter banks with its marking scheme is part of CBSE Pro.