Syllabus › Grade 9

Grade 9 Maths Syllabus

The 28 chapters of Grade 9 Mathematics, in the order they are usually taught. The bar shows each chapter's share of exam marks.

Term 1

  • 2. Number Base Two · ද්විමය සංඛ්‍යා

    Notes →

    Develops relationships between numbers in different bases.

    in 32/40 tests
  • 3. Number Patterns · සංඛ්‍යා රටා

    Notes →

    Develops the general term by identifying the relationship between the terms of a number pattern.

    in 37/40 tests
  • 4. Fractions · භාග

    Notes →

    Methodically simplifies expressions involving fractions.

    in 38/40 tests
  • 5. Percentages · ප්‍රතිශත

    Notes →

    Makes decisions by comparing profits and losses.

    in 40/40 tests
  • 6. Algebraic Expressions · වීජීය ප්‍රකාශන

    Notes →

    Simplifies expressions by substitution. Simplifies binomial expressions

    in 33/40 tests
  • 7. Factors of Algebraic Expressions · වීජීය ප්‍රකාශනවල සාධක

    Notes →

    Presents algebraic expressions in a simple form by factorizing. Factorizes quadratic expressions to fulfill mathematical requirements.

    in 39/40 tests
  • 8. Angles Related to Straight Lines and Parallel Lines · සරල රේඛා, සමාන්තර රේඛා ආශ්‍රිත කෝණ

    Notes →

    Establishes the relationships between the angles related to straight lines. Investigates the angles formed by various intersecting straight lines.

    in 38/40 tests
  • 9. Liquid Measurements · ද්‍රව මිනුම්

    Notes →

    Develops relationships between units of liquid measurements.

    in 33/40 tests
  • 15. Axioms · ප්‍රත්‍යක්ෂ

    Notes →

    Geometrically analyses the relationships between quantities.

    in 18/40 tests

Term 2

  • 1. Round off and Scientific Notation · වටැයීම හා විද්‍යාත්මක අංකනය

    Notes →

    Organizes numbers in ways that facilitate their manipulation. Determines approximate values to facilitate manipulation.

    in 30/40 tests
  • 10. Direct Proportion · අනුලෝම සමානුපාත

    Notes →

    Engages in calculations by considering direct

    in 22/40 tests
  • 11. Calculator · ගණකය

    Notes →

    Uses the calculator to facilitate calculations.

    in 14/40 tests
  • 12. Indices · දර්ශක

    Notes →

    Simplifies powers by applying the laws of indices.

    in 28/40 tests
  • 13. Loci and Constructions · පථ හා නිර්මාණ

    Notes →

    Uses the knowledge on the basic loci to determine the location of a point. Uses geometric constructions in various activities.

    in 27/40 tests
  • 14. Equations · සමීකරණ

    Notes →

    Easily solves problems in day to day life by solving linear equations. Solves problems by using the methods of solving simultaneous equations.

    in 34/40 tests
  • 16. Angles of a Triangle · ත්‍රිකෝණයක කෝණ

    Notes →

    Formally investigates the sum of the three interior angles of a triangle. Investigates the relationship between the exterior angle formed by producing a side of a triangle and the interior opposite angles.

    in 33/40 tests
  • 17. Formulae · සූත්‍ර

    Notes →

    Changes the subject of a formula that has been developed to show the relationship between variables.

    in 21/40 tests
  • 18. Circumference of a Circle · වෘත්තයක පරිධිය

    Notes →

    Applies the relationship between the diameter and circumference of a circle when performing various calculations.

    in 23/40 tests
  • 19. Pythagoras Relationship · පයිතගරස් සම්බන්ධය

    Notes →

    Applies Pythagoras’ relationship to solve problems in day to day life.

    in 28/40 tests
  • 20. Graphs · ප්‍රස්තාර

    Notes →

    Analyses graphically mutual linear relationship between two variables.

    in 27/40 tests

Term 3

  • 21. Inequalities · අසමානතා

    Notes →

    Uses the relationship between two quantities to

    in 16/40 tests
  • 22. Sets · කුලක

    Notes →

    Performs set operations by identifying various systems.

    in 19/40 tests
  • 23. Area · වර්ගඵලය

    Notes →

    Investigates the area of simple geometrical shapes in the environment.

    in 27/40 tests
  • 24. Probability · සම්භාවිතාව

    Notes →

    Investigates the likelihood of an event by considering the

    in 18/40 tests
  • 25. Angles of Polygons · බහු අස්‍රවල කෝණ

    Notes →

    Performs calculations using the sums of the interior and exterior angles of a polygon.

    in 19/40 tests
  • 26. Algebraic Fractions · වීජීය භාග

    Notes →

    Analyses relationships in daily life by simplifying algebraic fractions.

    in 12/40 tests
  • 27. Scale Drawings · පරිමාණ රූප

    Notes →

    Indicates the direction of a location by means of an Investigates various locations in the environment using scale diagrams.

    in 17/40 tests
  • 28. Data Representation and Prediction · දත්ත නිරූපණය හා අර්ථකථනය

    Notes →

    Represents data such that comparison is Investigates frequency distributions using representative values.

    in 19/40 tests