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 tests3. Number Patterns · සංඛ්යා රටා
Notes →Develops the general term by identifying the relationship between the terms of a number pattern.
in 37/40 tests4. Fractions · භාග
Notes →Methodically simplifies expressions involving fractions.
in 38/40 tests5. Percentages · ප්රතිශත
Notes →Makes decisions by comparing profits and losses.
in 40/40 tests6. Algebraic Expressions · වීජීය ප්රකාශන
Notes →Simplifies expressions by substitution. Simplifies binomial expressions
in 33/40 tests7. 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 tests8. 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 tests9. Liquid Measurements · ද්රව මිනුම්
Notes →Develops relationships between units of liquid measurements.
in 33/40 tests15. 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 tests10. Direct Proportion · අනුලෝම සමානුපාත
Notes →Engages in calculations by considering direct
in 22/40 tests11. Calculator · ගණකය
Notes →Uses the calculator to facilitate calculations.
in 14/40 tests12. Indices · දර්ශක
Notes →Simplifies powers by applying the laws of indices.
in 28/40 tests13. 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 tests14. 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 tests16. 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 tests17. Formulae · සූත්ර
Notes →Changes the subject of a formula that has been developed to show the relationship between variables.
in 21/40 tests18. 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 tests19. Pythagoras Relationship · පයිතගරස් සම්බන්ධය
Notes →Applies Pythagoras’ relationship to solve problems in day to day life.
in 28/40 tests20. 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 tests22. Sets · කුලක
Notes →Performs set operations by identifying various systems.
in 19/40 tests23. Area · වර්ගඵලය
Notes →Investigates the area of simple geometrical shapes in the environment.
in 27/40 tests24. Probability · සම්භාවිතාව
Notes →Investigates the likelihood of an event by considering the
in 18/40 tests25. Angles of Polygons · බහු අස්රවල කෝණ
Notes →Performs calculations using the sums of the interior and exterior angles of a polygon.
in 19/40 tests26. Algebraic Fractions · වීජීය භාග
Notes →Analyses relationships in daily life by simplifying algebraic fractions.
in 12/40 tests27. 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 tests28. 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