OTS Mathematics Most Important Topics 2026
The single heaviest OTS Mathematics chapter (Arithmetic) carries about 68 percent of the 30 Mathematics MCQs on the OTS paper. All 3 chapters OTS examines are ranked below, with the method stated in full under the table.
Estimated from the official OTS syllabus weighting.
OTS Mathematics chapter frequency table
All 3 Mathematics chapters on the OTS syllabus, heaviest first. The subtopics under each chapter name are the ones it is most often examined on.
| # | Chapter | Est. MCQs | Share of Mathematics | Priority |
|---|---|---|---|---|
| 1 | ArithmeticRatio and Proportion, Percentages, Profit and Loss | 20.5 | 68.3% | Critical |
| 2 | AlgebraSequences and Series, Linear Equations, Quadratic Equations | 5.2 | 17.3% | Important |
| 3 | GeometryArea and Volume, Triangles and Angles | 4.3 | 14.3% | Standard |
How this was worked out: No solved paper we hold examines Mathematics, so nothing here is counted from past papers. The 30 Mathematics MCQs on the OTS paper are spread across the chapters in proportion to how much material each chapter carries in the syllabus. Use it as a study order, not as a prediction, and check the conducting body's own syllabus for the final word.
Top 3 most important Mathematics topics for OTS 2026
Arithmetic
CriticalArithmetic is 68.3 percent of the OTS Mathematics paper and works out at roughly 20.5 MCQs on the paper. It is examined mostly on Ratio and Proportion, Percentages and Profit and Loss.
Algebra
ImportantAlgebra is 17.3 percent of the OTS Mathematics paper and works out at roughly 5.2 MCQs on the paper. It is examined mostly on Sequences and Series, Linear Equations and Quadratic Equations.
Geometry
StandardGeometry is 14.3 percent of the OTS Mathematics paper and works out at roughly 4.3 MCQs on the paper. It is examined mostly on Area and Volume and Triangles and Angles.
Every Mathematics chapter on the OTS syllabus
1,551 free Mathematics MCQs across 3 chapters, every answer explained.
OTS Mathematics most important topics: frequently asked questions
What are the most important Mathematics topics for OTS 2026?
The highest-value OTS Mathematics chapters are Arithmetic (about 20.5 MCQs), Algebra (about 5.2 MCQs) and Geometry (about 4.3 MCQs). Together they account for 100 percent of the 30 Mathematics MCQs on the OTS paper. The ranking is derived rather than counted from OTS papers; the method is stated in full on this page.
How many Mathematics MCQs are on the OTS paper?
Mathematics is worth 30 MCQs on the OTS paper as set by Open Testing Service, spread across 3 chapters. This page ranks all 3 of them by how many of those MCQs each chapter is worth.
Are these OTS Mathematics numbers counted from past papers?
No. No solved paper on TestUstad examines Mathematics, so nothing here is a count. The 30 Mathematics MCQs on the OTS paper are spread across the chapters in proportion to how much material each chapter carries in the syllabus. Treat it as a sensible study order and confirm against Open Testing Service's own syllabus.
Should I skip the low-priority Mathematics chapters for OTS?
No. Every chapter in this table appears on the OTS paper, and OTS is decided by a handful of marks. A chapter marked Standard still costs you the marks you drop on it. Use this ranking to decide the order you study in and how long you spend on each chapter, not to cut chapters out.
Where can I practise these OTS Mathematics chapters?
Every chapter on this page links to its own free Mathematics MCQs on TestUstad, 1,551 questions across the 3 chapters OTS examines. Practice is free and unlimited with no account, and every question carries a written explanation of why the correct option is correct.