O/L Mathematics Study Guide 2026 – Complete Revision Guide
A complete O/L Mathematics study guide for Sri Lankan students, covering important lessons, formulas, revision tips, and exam preparation strategies for the 2026 examination.

O/L Mathematics Study Guide 2026
This O/L Mathematics Study Guide is designed to help Sri Lankan students revise the most important topics, formulas, and question types required for the G.C.E. Ordinary Level Mathematics examination.
What You Will Learn
- Important Mathematics concepts
- Essential formulas
- Algebra revision
- Geometry revision
- Mensuration
- Statistics and probability
- Graphs and functions
- Past paper preparation
- Exam time management
- Common mistakes to avoid
1. Algebra
Algebra is one of the most important areas in O/L Mathematics.
Students should be comfortable with:
- Simplifying algebraic expressions
- Solving equations
- Factorization
- Algebraic fractions
- Simultaneous equations
- Indices
Important Tip
Always show your calculation steps clearly. Even if the final answer is incorrect, correct working may help you obtain marks.

