Q: What does O-Level / SEC G3 Mathematics Syllabus 2026 - 2027 (Singapore) cover? A: For 2026, it covers SEAB O-Level Mathematics 4052 and Additional Mathematics 4049. For 2027, SEAB lists the SEC G3 successors as Mathematics K310 and Additional Mathematics K341, with 4052 and 4049 kept as reference codes on the syllabus listing.
TL;DR In 2026, two written papers test Mathematics (4052) and two written papers test Additional Mathematics (4049). In 2027, SEAB's SEC G3 listing uses Mathematics K310 and Additional Mathematics K341 for the same reference families. Mathematics is organised into Number and Algebra, Geometry and Measurement, and Statistics and Probability. Additional Mathematics is organised into Algebra, Geometry and Trigonometry, and Calculus. Use the official PDFs to check the exact subject code and paper structure for your exam year.
Status: SEAB 2026 O-Level 4052/4049 PDFs, 2027 SEC G3 K310/K341 PDFs, and calculator list checked 2026-06-05.
Which Maths Code Should You Check?
2026 school candidates: Use the GCE O-Level PDFs. Mathematics is 4052 and Additional Mathematics is 4049.
2027 school candidates: Use the SEC G3 PDFs. Mathematics is K310 and Additional Mathematics is K341. The 4052 and 4049 labels appear as reference codes, not the live 2027 school-candidate codes.
If your child is sitting school-based WAs before the national exam, ask the school which syllabus document the class is using for that year. That avoids mixing a 2026 O-Level code with a 2027 SEC G3 document when buying practice books, checking calculator rules, or planning topic revision.
Paper 1: 2 h 15 min, 90 marks, 50 percent. About 26 short-answer questions.
Paper 2: 2 h 15 min, 90 marks, 50 percent. 9 to 10 questions, with the final question as an extended real-world scenario.
Additional Mathematics 4049
Paper 1: 2 h 15 min, 90 marks, 50 percent. 12 to 14 questions, with questions carrying up to 10 marks each.
Paper 2: 2 h 15 min, 90 marks, 50 percent. 9 to 11 questions, with questions carrying up to 12 marks each.
Target pacing=MinutesMarks≈0.67marks per minute
Both syllabuses list written papers only (no coursework component in the scheme of assessment).
2 | Assessment Objectives (AOs)
AO1 Use and apply standard techniques - recall facts, read information directly, and carry out routine procedures.
AO2 Solve problems in a variety of contexts - translate information, connect topics, and apply mathematical techniques to solve problems.
AO3 Reason and communicate mathematically - justify statements, explain results in context, and write mathematical arguments or proofs where the subject requires them.
In the 2026 syllabuses, the approximate weightings are:
Number and Algebra: numbers and operations, ratio, percentage, rate and speed, algebraic expressions, functions and graphs, equations, sets, and matrices. Typical entry: Sec 1 to Sec 3.
Geometry and Measurement: angles, congruence, similarity, circles, Pythagoras and trigonometry, mensuration, coordinate geometry, and vectors. Typical entry: Sec 1 to Sec 4.
Statistics and Probability: data handling and analysis, mean/median/mode, spread, standard deviation, and simple and combined probability. Typical entry: Sec 2 to Sec 4.
3.2 Additional Mathematics (A-Math)
Algebra: quadratic functions, equations and inequalities, surds, polynomials, partial fractions, binomial expansions, and exponential and logarithmic functions. Added depth: manipulation fluency for H2.
Geometry and Trigonometry: trigonometric functions, identities and equations, coordinate geometry, and proofs in plane geometry. Added depth: trigonometry and proof work.
Calculus: differentiation, integration, and applications to gradients, rates of change, area, displacement, velocity, and acceleration. Added depth: foundation for JC calculus sequences.
Full topic bullets appear in the official syllabus PDFs.
4 | Formula Booklet & Calculators
Formulae: relevant mathematical formulae are provided in the question papers (see the SEAB syllabus PDFs below).
Calculators: an approved calculator may be used in both papers for both subjects. Check the SEAB calculator list before exam season because model approvals can change.
SEAB's calculator guidelines also state that scientific calculators must meet the listed requirements, while graphing calculators are for A-Level subjects only.
5 | Assessment Windows & IP Cross-Links
For exam dates: Check SEAB’s timetable page (it updates each year, so avoid relying on a fixed “mid-Oct” rule).
For school assessments: MOE has explained the aim of removing mid-year exams is to strengthen students’ intrinsic motivation to learn; assessment structures and Weighted Assessment (WA) calendars still vary by school and programme.
5A | What Parents Should Do With This Transition
The practical question is not whether "O-Level Maths changed name" in a vague sense. The practical question is which official document your child is being taught against this year.
Use this sequence:
Confirm whether the student is a 2026 O-Level school candidate or a 2027 SEC G3 school candidate.
Match the subject code before buying practice material: 4052 or 4049 for 2026, K310 or K341 for 2027.
Build revision by strand: E-Math first across Number and Algebra, Geometry and Measurement, and Statistics and Probability; A-Math next across Algebra, Geometry and Trigonometry, and Calculus.
Keep a separate error log for paper timing, careless algebra, diagram setup, calculator checking, and written reasoning. Those gaps cut across both code families.
6 | Pacing & Error-Proofing Tips
One-mark-per-1.5-min rule keeps Paper 2 on schedule.
Show essential working and units in geometry, mensuration, and trigonometry answers; the syllabus notes make working and accuracy expectations explicit.
Use “answer-then-explain” for AO3 proofs: state result first, justify steps second.
For calculator papers, confirm the model against SEAB's list and clear stored information before exam use.
Inline check: log1050=log5+1.
When Tuition Becomes Useful
The syllabus tells you what can be tested. Tuition becomes useful only when repeated marked work shows the same gap after normal revision.
Algebra steps are slow or messy even when the concept is understood: Start with the IP E-Math notes hub, then use the broad Maths support guide if the gap persists across topics.
A-Math questions break down at trigonometry, functions, or calculus setup: Use the IP A-Math notes hub before comparing support options in the IP Maths support guide.
Full papers run out of time despite topic revision: Pair the Math TYS guide with a paper-by-paper error log.
The student is bridging from upper-secondary Maths into JC H2: Compare the A-Level Maths support guide after the A-Math calculus and algebra strands are stable.
Use the official syllabus map to name the weak strand first. Then choose notes, TYS, or tuition around that strand rather than around more generic practice volume.
Where can I download the O-Level or SEC G3 Maths syllabus PDF? For 2026, use SEAB's O-Level Mathematics 4052 and Additional Mathematics 4049 PDFs. For 2027, use SEAB's SEC G3 Mathematics K310 and Additional Mathematics K341 PDFs.
What’s the difference between Mathematics and Additional Mathematics? Mathematics covers the broad foundation across number and algebra, geometry and measurement, and statistics and probability. Additional Mathematics assumes that foundation and goes deeper into algebra, geometry and trigonometry, and calculus.
What calculators are allowed for O-Level Math? SEAB publishes an official “Approved Scientific Calculators” list. Use only models on that list, and confirm your school’s exam-day rules before the paper.
Is O-Level Mathematics still 4052 in 2027? For 2027 school candidates, SEAB lists SEC G3 Mathematics as K310. The 2027 listing keeps 4052 as the reference code for the 2026-and-earlier O-Level Mathematics family, so families should not treat 4052 as the live 2027 school-candidate code.
Is Additional Mathematics compulsory? This page explains the SEAB Mathematics and Additional Mathematics syllabuses, but subject allocation is handled by schools. Check your school's subject-combination or promotion guidance before assuming that A-Math is required for every student.
Should my child prepare for 4052, 4049, K310, or K341? Use 4052 for 2026 Mathematics and 4049 for 2026 Additional Mathematics. Use K310 for 2027 SEC G3 Mathematics and K341 for 2027 SEC G3 Additional Mathematics. If the school gives a different internal document for WAs, follow the school document for WA preparation and the SEAB PDF for national-exam format.
How should we choose between notes, TYS, and tuition? Use notes when the topic is unfamiliar, TYS when the topic is known but timing is weak, and tuition when marked work shows the same error pattern after independent correction. The useful starting point is the error type, not the subject code alone.
