CBSE Class 9 Maths Ganita Manjari Syllabus & Sample Paper 2026-27
CBSE 2026-27 Official Syllabus Adjustable Weightage

CBSE Class 9 Maths Syllabus 2026-27
Marks, Chapter Mapping & Weightage

The official CBSE Class 9 Maths syllabus for 2026-27, explained for teachers, students and parents: unit-wise marks and periods, how the 15 syllabus chapters map to the 14 chapters of the Ganita Manjari textbook, chapter-wise key concepts, the paper design, and a proposed chapter-wise weightage that schools can adjust.

80
Theory Marks
20
Internal Assessment
6
Units
15
Syllabus Chapters

Last updated: 3 October 2026 · Source: CBSE Academic, Mathematics Class IX (2026-27)

Official Course Structure

Unit-wise Marks and Periods

The 80-mark theory paper (3 hours) is built from six units. CBSE gives marks and periods for each unit, not for each chapter.

UnitChaptersPeriodsMarks
I — Number SystemNumber System1207
II — AlgebraIntroduction to Polynomials, Sequences and Progressions, Exploring Algebraic Identities, Linear Equations in Two Variables6620
III — Coordinate GeometryCoordinate Geometry604
IV — GeometryIntroduction to Euclid's Geometry: Axioms and Postulates, Lines and Angles, Triangles — Congruence Theorems, 4-gons (Quadrilaterals), Circles6925
V — MensurationArea and Perimeter, Surface Area and Volume2714
VI — Statistics and ProbabilityStatistics, Introduction to Probability2410
Total (Theory)80
Internal Assessment20
Grand Total100

Source: CBSE Academic, Mathematics Class IX (2026-27). Periods are as listed by CBSE for each unit.

Syllabus ↔ Textbook

How the 15 Syllabus Chapters Map to the 14 Ganita Manjari Chapters

CBSE lists 15 chapters; the Ganita Manjari textbook has 14. CBSE does not publish a chapter-to-chapter table, so this mapping is ours, made by matching each syllabus chapter's key concepts to the textbook's chapters.

#CBSE syllabus chapterUnitTextbook chapterMatch
1Number SystemICh 3 — The World of NumbersDirect match
2Introduction to PolynomialsIICh 2 — Introduction to Linear PolynomialsDirect match
3Sequences and ProgressionsIICh 8 — Predicting What Comes Next: Sequences and ProgressionsDirect match
4Exploring Algebraic IdentitiesIICh 4 — Exploring Algebraic IdentitiesDirect match
5Linear Equations in Two VariablesIICh 13 — Two Variables, One LineDirect match
6Coordinate GeometryIIICh 1 — Orienting Yourself: The Use of CoordinatesDirect match
7Introduction to Euclid's Geometry: Axioms and PostulatesIV—No separate textbook chapter
8Lines and AnglesIV—No separate textbook chapter
9Triangles — Congruence TheoremsIVCh 9 — Propositions and their Converses
Covers the propositions-and-converses strand listed under Triangles
Partial match
104-gons (Quadrilaterals)IVCh 12 — QuadrilateralsDirect match
11CirclesIVCh 5 — I'm Up and Down, and Round and RoundDirect match
12Area and PerimeterVCh 6 — Measuring Space: Perimeter and AreaDirect match
13Surface Area and VolumeVCh 14 — Math of Space: Surface Area and VolumeDirect match
14StatisticsVICh 10 — How Quantities Combine: Understanding DataDirect match
15Introduction to ProbabilityVICh 7 — The Mathematics of Maybe: Introduction to ProbabilityDirect match
Two things that do not line up

Euclid's Geometry and Lines and Angles have no separate textbook chapter, and Triangles is covered only through the propositions-and-converses strand in Chapter 9. Chapter 11, The World of Algorithms, has no syllabus chapter, marks or periods. The syllabus does list computational thinking, including algorithmic problem-solving, as a competency in 12 of its 15 chapters (not in Euclid's Geometry, Triangles or 4-gons), so algorithm-style questions can appear inside other chapters.

Proposed by Boundless Maths

Proposed Chapter-wise Weightage (Adjustable)

CBSE publishes marks by unit only. This table splits each unit's official marks across its chapters. It is a proposal, not an official figure, and schools set their own papers — change any number and the unit totals will tell you whether you are still within CBSE's structure.

Textbook chapterProposed marksWhy
Unit I — Number System · CBSE marks: 7
Ch 3 — The World of NumbersOnly chapter in its unit, so these marks are official, not proposed.
Unit total7Matches the CBSE unit total (7)
Unit II — Algebra · CBSE marks: 20
Ch 2 — Introduction to Linear PolynomialsEqual share is 5; lowered by 1 because slope and y-intercept return in Chapter 13.
Ch 4 — Exploring Algebraic IdentitiesEqual share is 5; raised by 1 — identities and factorisation are used across algebra and mensuration.
Ch 8 — Predicting What Comes Next: Sequences and ProgressionsEqual share is 5; lowered by 1 to fund Chapters 4 and 13.
Ch 13 — Two Variables, One LineEqual share is 5; raised by 1 — graphs, word problems and modelling suit longer and case-based questions.
Unit total20Matches the CBSE unit total (20)
Unit III — Coordinate Geometry · CBSE marks: 4
Ch 1 — Orienting Yourself: The Use of CoordinatesOnly chapter in its unit, so these marks are official, not proposed.
Unit total4Matches the CBSE unit total (4)
Unit IV — Geometry · CBSE marks: 25
Ch 5 — I'm Up and Down, and Round and RoundA proof-heavy chapter that also absorbs part of the marks for Geometry topics with no separate textbook chapter.
Ch 9 — Propositions and their ConversesKept low: a logic-and-proof chapter that covers only the propositions-and-converses strand of Triangles.
Ch 12 — QuadrilateralsA proof-heavy chapter that also absorbs part of the marks for Geometry topics with no separate textbook chapter.
Unit total25Matches the CBSE unit total (25)
Unit V — Mensuration · CBSE marks: 14
Ch 6 — Measuring Space: Perimeter and AreaEqual split of the unit's 14 marks.
Ch 14 — Math of Space: Surface Area and VolumeEqual split of the unit's 14 marks.
Unit total14Matches the CBSE unit total (14)
Unit VI — Statistics and Probability · CBSE marks: 10
Ch 7 — The Mathematics of Maybe: Introduction to ProbabilityEqual split of the unit's 10 marks.
Ch 10 — How Quantities Combine: Understanding DataEqual split of the unit's 10 marks.
Unit total10Matches the CBSE unit total (10)
Not in CBSE's course structure · CBSE marks: 0
Ch 11 — The World of AlgorithmsNo chapter, periods or marks in the course structure. A school that assesses it can take 2–3 marks of competency-based questions from Number System and keep the total at 80.
Unit total0Matches the CBSE unit total (0)
Total80Total matches the 80-mark paper

Unit totals (Number System 7, Algebra 20, Coordinate Geometry 4, Geometry 25, Mensuration 14, Statistics and Probability 10) are official. Everything inside a unit is our proposal. Your edits are not saved; use Print to keep a copy.

For guidance on constructing and marking a paper from this weightage, see our paper-setting guidance.

How to use this table
  1. Change the marks for any chapter to match your school's plan.
  2. Keep each unit's total equal to CBSE's figure, so the paper stays within the official structure.
  3. Move marks between chapters of the same unit, not between units.
Geometry needs a judgement call

CBSE lists five Geometry chapters worth 25 marks, about 5 each on an equal split. The textbook has separate chapters for only two of them (Circles and Quadrilaterals), so the marks for Euclid's Geometry, Lines and Angles, and Triangles are spread across Chapters 5 and 12, and Chapter 9 is kept low. Teachers who cover more of those topics through Chapter 9 may want to move some marks there.

Official Key Concepts

Chapter-wise Key Concepts

The key concepts CBSE lists for each of the 15 syllabus chapters, condensed, with the notable items from each chapter's learning outcomes. Open the official PDF for the full outcome statements and competency codes.

Unit I — Number System 12 periods

1Number System
  • Introduction to rational numbers
  • Representing rational numbers on the number line
  • Density of rational numbers, with its proof
  • Finding rational numbers between two rational numbers
  • Decimal representation of rational numbers
  • Introduction to irrational numbers
  • Proof of the irrationality of √2 and √3
  • The square root spiral

Outcomes also mention applying computational thinking to generate decimal expansions step by step and to represent numbers through algorithms and visual models.

Unit II — Algebra 66 periods

2Introduction to Polynomials
  • Algebraic expressions; definition and degree of a polynomial
  • Introduction to linear polynomials and applications
  • Exploring linear patterns
  • Modelling linear growth and linear decay
  • Linear relationships and visualising them
  • Slope and y-intercept of a line y = ax + b

Outcomes include graphing a linear equation in two variables and identifying its slope and y-intercept.

3Sequences and Progressions
  • Introduction to sequences; explicit (general) rule and recursive rule
  • Arithmetic progressions: nth term, visualising an AP, practical contexts
  • Sum of the first n natural numbers
  • Geometric progressions: nth term, visualising a GP, practical contexts
  • Applications of GP in fractals
  • The Tower of Hanoi puzzle

Outcomes include solving the Tower of Hanoi puzzle and analysing the attributes of fractals using GP.

4Exploring Algebraic Identities
  • Revisiting algebraic identities
  • Visualising identities using geometrical models
  • Factorisation of algebraic expressions using identities
  • More identities and their applications
  • Visualising factorisation of quadratic expressions, with and without algebra tiles
  • Finding new identities
  • Simplifying rational expressions

Outcomes include interpreting the factors of quadratic expressions through geometric models.

5Linear Equations in Two Variables
  • Introduction through practical examples
  • Solutions of a linear equation in two variables and their graphical representation
  • Slope-intercept form
  • Drawing graphs when x and y take only certain values
  • Pair of linear equations in two variables
  • Graphical method of solving a pair of linear equations
  • Nature of solutions: consistency and inconsistency
  • Algebraic methods: substitution and elimination

Outcomes include determining the nature of solutions and modelling everyday situations with a pair of linear equations.

Unit III — Coordinate Geometry 6 periods

6Coordinate Geometry
  • Brief history of coordinate geometry
  • The 2-D Cartesian coordinate system
  • Distance between two points in the plane
  • Midpoint of the line segment between two points

Outcomes also mention representing a floor plan on a grid, testing whether three points lie on a line, and checking whether a triangle is right-angled using coordinates.

Unit IV — Geometry 69 periods

7Introduction to Euclid's Geometry: Axioms and Postulates
  • History of geometry
  • Constructing a square with a given side as described in Baudhayana's Sulbasutras
  • Discovering Euclid's definitions
  • Axioms: axioms of measurement and rules for geometric objects

Outcomes include stating Euclid's five postulates and describing the contributions of India, Egypt and Greece.

8Lines and Angles
  • Rays and angles; measures of angles
  • Intersecting lines and angles; pairs of angles
  • Theorems and examples on intersecting lines
  • Theorems and examples on parallel lines

Outcomes include the linear pair theorem and its converse, proof by contradiction, and why a triangle must have at least two acute angles.

9Triangles — Congruence Theorems
  • Practical applications of triangles
  • Proofs of the conditions of congruence of triangles
  • Theorems on triangles
  • Propositions and their converse
  • Problems based on applications of theorems on triangles

Outcomes include the SAS, SSS, ASA, RHS and AAS conditions, properties of isosceles triangles, converses and counterexamples, and why SSA is not generally a valid condition.

104-gons (Quadrilaterals)
  • Properties of parallelograms
  • Important theorems on parallelograms and their proofs
  • The midpoint theorem and its applications
  • Central symmetry in the context of parallelograms

Outcomes include the converse of the midpoint theorem, concurrency of medians with the 2:1 ratio, the midpoint parallelogram of any 4-gon, reflection and rotation symmetries, and how any 4-gon tiles the plane.

11Circles
  • Practical applications and uses of circles
  • Definitions: centre, diameter and radius
  • Chords and the angles they subtend
  • Midpoints and perpendicular bisectors of chords
  • Distance of chords from the centre
  • Angles subtended by an arc
  • Cyclicity of points

Outcomes include constructing the circumcircle, the angle-at-the-centre theorem, angles in the same segment, the angle in a semicircle, and the cyclic-quadrilateral test.

Unit V — Mensuration 27 periods

12Area and Perimeter
  • Perimeter of shapes; perimeter of a circle and an introduction to π and its irrationality
  • Length of an arc
  • Area of rectangles, parallelograms and triangles; Heron's formula
  • Squaring a rectangle (proof from Baudhayana's Sulbasutras)
  • Area of a circle (derivation) and area of a sector
  • Brahmagupta's formula for the area of a cyclic 4-gon; Heron's formula as a special case

Outcomes include historical approximations of π (Archimedes, Aryabhata, Zu Chongzhi) and the ideas of special case and generalisation.

13Surface Area and Volume
  • Surface areas and volumes of spheres (including hemispheres) and right circular cones

Outcomes cover the surface area and volume of cuboids, cubes, cylinders, cones, pyramids and spheres.

Unit VI — Statistics and Probability 24 periods

14Statistics
  • Graphical representation of data
  • Measures of central tendency

Outcomes include computing the weighted average and reading stacked and 100% stacked bar graphs.

15Introduction to Probability
  • Concept of probability and randomness
  • The probability scale
  • Empirical probability: analysing statistical data and performing experiments
  • Theoretical probability: sample space and events
  • Representing probability through tree diagrams and tables

Outcomes include estimating empirical probability and computing probability with tree diagrams and tables.

Source: CBSE Academic, Mathematics Class IX (2026-27), unit-wise chapter tables.

Official Paper Design

Question Paper Design (80 Marks, 3 Hours)

CBSE designs the paper by the kind of thinking a question needs. It does not fix the mix of question formats such as MCQs, assertion-reason, short, long or case-study questions, so schools decide that.

Thinking levelMarksWeightage (approx.)
Remembering and Understanding — recall facts, terms and basic concepts; explain, compare and interpret ideas4354%
Applying — use knowledge, techniques and rules in new situations1924%
Analysing, Evaluating and Creating — break information into parts, judge ideas, and combine elements in new ways1822%
Total80100%

The same 54 / 24 / 22 split applied in the 2025-26 syllabus.

For how these thinking levels and the chapter weightage come together in an actual paper, see our paper-setting guidance.

Official Internal Assessment

Internal Assessment (20 Marks)

ComponentMarks
Pen Paper Test and Multiple Assessment (5 + 5)10
Portfolio5
Lab Practical — activities taken from the prescribed lab books5
Total20
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For Teachers

Lab Manual & Activities Guide

Lab practical activities and how to set and mark an 80-mark paper

Our Lab Manual & Activities guide matches the NCERT lab manual's activities to all 14 Ganita Manjari chapters, with ready-to-run substitutes where the manual has no match, and also explains the conventions we follow to construct and mark the 80-mark paper below.
Prescribed books

CBSE names four: the NCERT Class IX Mathematics textbook; Guidelines for Mathematics Laboratory in Schools, Class IX (CBSE); Laboratory Manual — Mathematics, Secondary Stage (NCERT); and Mathematics Exemplar Problems for Class IX (NCERT). Our Lab Manual & Activities guide uses it in detail.

2025-26 vs 2026-27

What Changed from the 2025-26 Syllabus

Unit2025-262026-27Change
Number System107−3
Algebra2020No change
Coordinate Geometry44No change
Geometry2725−2
Mensuration1314+1
Statistics (2025-26) / Statistics and Probability (2026-27)610+4
Total8080

Sources: CBSE Academic, Mathematics Class IX syllabi for 2025-26 and 2026-27.

New chapters and themes

Sequences and Progressions and Introduction to Probability are new chapters, and Algebraic Identities is now its own chapter. Area and Perimeter now brings Heron's formula together with the circle, sector and Brahmagupta's formula. The syllabus also builds in India's mathematical history — Baudhayana's Sulbasutras, Brahmagupta's formula, Aryabhata's sine and cosine, and Madhava's series for π. Some older pages still show Geometry as 27 marks, which is the 2025-26 figure.

Worked Example

Mock Paper & Marking Scheme

An 80-mark, 3-hour mock paper built from the weightage above: 38 questions across five sections, with 9 carrying internal choice, and a marking scheme with student-style model answers. Free to download.

Free Download

Class 9 Maths Mock Paper (2026-27 session)

80 marks · 3 hours · 38 questions · 9 with internal choice

For how this paper was constructed and marked — the section layout, chapter ordering, internal-choice pattern and marking principles — see our paper-setting guidance.

Common Questions

Frequently Asked Questions

The 80-mark theory paper is divided as Number System 7, Algebra 20, Coordinate Geometry 4, Geometry 25, Mensuration 14, and Statistics and Probability 10. Internal Assessment adds 20 marks, for 100 in total.
The CBSE syllabus lists 15 chapters across six units, while the Ganita Manjari textbook has 14 chapters in two parts. They do not match one-to-one: Euclid's Geometry, Lines and Angles, and Triangles have no separate textbook chapters, and the textbook's Chapter 11 (The World of Algorithms) has no chapter in the syllabus.
No. CBSE publishes marks for each unit, not for each chapter. The chapter-wise weightage on this page is a proposal by Boundless Maths, built by splitting the official unit marks across each unit's chapters. Schools set their own papers and may adjust it, and the table on this page lets teachers edit the marks.
It does not appear as a chapter in CBSE's course structure, and no marks or periods are assigned to it. The syllabus lists computational thinking, including algorithmic problem-solving, as a competency within most chapters. Our suggestion is to give it 0 marks in the theory blueprint; a school that wants to assess it can use 2 to 3 marks of competency-based questions from Number System, or the internal assessment portfolio.
The 3-hour, 80-mark paper is designed by thinking level: 43 marks (about 54%) for Remembering and Understanding, 19 marks (24%) for Applying, and 18 marks (22%) for Analysing, Evaluating and Creating. The design lists thinking levels, not question formats, so schools decide the mix of formats.
Pen Paper Test and Multiple Assessment carry 10 marks (5 + 5), Portfolio carries 5 marks, and the Lab Practical carries 5 marks, with lab activities taken from the prescribed lab books.
Yes. Our 80-mark mock paper and its marking scheme, with student-style model answers, are free to download below. For how the paper was constructed, our marking-scheme conventions, and lab practical activities, see our Lab Manual & Activities guide.
Number System fell from 10 to 7 marks, Geometry from 27 to 25, and Mensuration rose from 13 to 14. Statistics (6 marks) became Statistics and Probability (10 marks). Sequences and Progressions and Introduction to Probability are new chapters, and Algebraic Identities is now its own chapter. Algebra (20) and Coordinate Geometry (4) are unchanged.
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