O-LEVEL / SEC G3 · MATHEMATICS · SEAB 4052 (2026) · K310 (2027)

E Math Notes for O-Level and SEC G3 Mathematics

All 19 chapters of the SEAB syllabus, from numbers and algebra to probability and personal finance. Every chapter teaches one outcome at a time, with worked examples, the formulas to memorise, the mistakes that lose marks, and an exercise to prove you have it. The opening sections of every chapter are a free preview; unlock all 19 chapters for $9 one-time (included with Premium).

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19chapters

146sections to tick

3strands + real world

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Three strands. Nineteen chapters.

SYLLABUS 4052 (2026) / K310 (2027) TOPIC LIST

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STRAND I · 9 CHAPTERS
Number and Algebra
1
Numbers and their operations
0/8
2
Ratio and proportion
0/7
3
Percentage
0/9
4
Rate and speed
0/7
5
Algebraic expressions and formulae
0/11
6
Functions and graphs
0/9
7
Equations and inequalities
0/10
8
Set language and notation
0/4
9
Matrices
0/6

STRAND II · 7 CHAPTERS
Geometry and Measurement
10
Angles, triangles and polygons
0/7
11
Congruence and similarity
0/7
12
Properties of circles
0/7
13
Pythagoras' theorem and trigonometry
0/9
14
Mensuration
0/7
15
Coordinate geometry
0/5
16
Vectors in two dimensions
0/7

STRAND III · 2 CHAPTERS
Statistics and Probability
17
Data handling and analysis
0/9
18
Probability
0/7

PART IV · 1 CHAPTER
Real-world problems
19
Real-world problems and personal finance
0/10

How to use these notes

1.

Read one section

Each section teaches one syllabus outcome, with a worked example you can follow line by line.

2.

Try it yourself

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3.

Come back and carry on

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Quick answers

Are these E-Math notes free?

The opening sections of every chapter are free to read online, no sign-in needed. Unlock all 19 chapters for $9 one-time, with no subscription. Premium also includes them.

Which E-Math syllabus do the notes follow?

The SEAB O-Level Mathematics syllabus 4052 (2026) and the SEC G3 Mathematics syllabus K310 (2027): Number and Algebra, Geometry and Measurement, Statistics and Probability, plus real-world problems and personal finance, in 19 chapters.

Is E-Math the same as A-Math?

No. Mathematics (E-Math) and Additional Mathematics (A-Math) are separate subjects, at both O-Level and SEC G3. These notes cover E-Math only. For A-Math, see our A Math notes.

What is in each chapter?

Each chapter opens with real-life problems, then teaches the syllabus outcomes one section at a time with worked examples, the formulas to memorise, the common mistakes that lose marks, and a five-level exercise with answers you can reveal.

Does it cover personal finance questions?

Yes. The last chapter covers the real-world problems in the syllabus, such as GST, interest, hire purchase and reading tables and graphs about money.

Is my progress saved?

Your ticks are saved on your own device, and the chapter list on this page shows how far you have got.