If your child sits the PSLE in 2026, the Math paper is not quite the one their older siblings took. Two topics moved, one disappeared entirely, and the two papers are now weighted equally. This is part two of the "SEAB Exam Guide series" — the format first, then the concepts that actually break P6 students topic by topic, then what to do about it.
📌 The short version. Two papers, 100 marks, about 2h30. Paper 1: 50 marks, no calculator. Paper 2: 50 marks, calculator allowed. For 2026: Speed is gone, Average and Ratio moved to P6, and the papers are now 50/50 instead of 45/55.
Chapter 1 · The 2026 format
Overview
| Paper 1 | Paper 2 | |
|---|---|---|
| Calculator | ❌ Not allowed | ✅ Allowed |
| Marks | 50 | 50 |
| Duration | 1h 10min | 1h 20min |
| Questions | 30 — Booklet A: 18 MCQ · Booklet B: 12 short-answer | 15 — 5 short-answer · 10 structured word problems |
100 marks in total. Exact marks per question follow SEAB's subject document for the year.
What actually changed for 2026
- Speed is removed. It has moved up to Secondary 1. That frees real revision time — and it means older ten-year-series papers contain a topic your child no longer needs.
- Average and Ratio moved from P5 to P6. The P6 year now carries two of the heavier word-problem topics, so pacing matters more than it used to.
- The papers are now equally weighted — 50/50, previously 45/55. Paper 1 gained multiple-choice questions (15 → 18) and lost short-answer ones (15 → 12); Paper 2's structured problems went from 12 to 10.
- Method is weighted more heavily. The revised format leans further into showing clear, logical steps — not just landing the final answer.
What this means in practice
Paper 1 is the accuracy paper. No calculator, 30 questions, roughly two minutes each. Marks are lost here to arithmetic slips and misread questions far more often than to genuinely unknown topics.
Paper 2 is the thinking paper. Ten structured word problems carry the bulk of the marks and are where stronger candidates separate. A calculator removes the arithmetic excuse — what is being tested is whether your child can set the problem up.
✅ The split in one line. Paper 1 rewards clean execution under time pressure. Paper 2 rewards correct set-up and readable working.
Two marking rules that quietly cost marks
These are not "be more careful" advice — they are how the paper is marked, and they cost marks even when your child's maths is completely correct.
1. The unit is part of the answer. In short-answer questions (Booklet B) and in the open-ended / structured questions of Paper 2, an answer written without its unit — or with the wrong unit — is penalised. 24 and 24 cm² are not the same answer. The number can be perfect and the mark still goes. This is the single cheapest mark to stop losing: the last thing written on every answer line should be the unit the question asked for.
2. No working, no method marks. In open-ended questions, the derivation is part of what's being marked. A bare final answer cannot earn method marks — so if the answer is wrong and there is no working, the question scores nothing, instead of picking up marks for a correct approach. Children who do multi-step problems in their head are gambling the whole question on flawless arithmetic.
Together these two rules mean a child can understand every topic in the syllabus and still bleed marks across the paper. They are pure technique, and they are fixable in a week.
Chapter 2 · The focus areas — where marks actually go missing
Nearly every one of these fails at the set-up, not the arithmetic. That distinction is the whole game.
Fractions
The single biggest trap: "of the remainder" versus "of the total". He spent ¾ of his money, then ⅓ of the remainder — the ⅓ is of what's left, not of the original. Children who read quickly default to the total every time.
Also watch: fractions of different wholes in the same question (⅔ of Ali's stickers vs ⅔ of Siti's are not the same quantity), and treating a fraction as a number when it is describing a share.
Ratio
Now a P6 topic. The classic killer is the before-and-after problem, and the fix is always the same question: what stayed constant?
- One quantity unchanged (money spent by only one person)
- The total unchanged (items moved between two groups)
- The difference unchanged (both gain or lose the same amount)
Identify the invariant and the problem opens up. Second trap: confusing part : part with part : whole, then multiplying by the wrong total.
Percentage
Nearly every percentage error is a base error — percentage of what. Increase-then-decrease problems are the classic: a 20% rise followed by a 20% fall does not return to the original, because the second 20% is taken from a bigger number.
Area and Perimeter
These two get confused more than any other pair in the syllabus. Add to that:
- Composite figures — shaded region problems solved by subtracting, where children forget one of the pieces
- Triangle area needing the perpendicular height, not the slanted side
- Answering in the right unit — cm vs cm²
Volume
Cubes and cuboids, water levels, and the conversion chain cm³ ↔ ml ↔ ℓ. Most errors are conversion errors, not volume errors. A tank problem asking for litres when the working is in cm³ catches a lot of otherwise-correct solutions.
Decimals
Place-value slips, misaligned decimal points, and money/measurement conversions. In Paper 1, with no calculator, this is where quiet marks disappear — 1.05 becoming 1.5 halfway down the page.
Angles, Triangles and Quadrilaterals
The instruction "not drawn to scale" exists precisely because children measure or eyeball instead of reasoning. Marks go missing on:
- Angles on a straight line / at a point / vertically opposite
- Properties of isosceles triangles, parallelograms, rhombuses and trapeziums
- Multi-step angle chains where one wrong step propagates to the end
Word problems and model drawing
Multi-step problems where units and parts must stay consistent. The failure is usually one of two things: the model doesn't match the sentence, or the child stops one step early — finding the total when the question asked for the difference.
Tables, Graphs and Pie Charts
Reading the wrong row or column, and — with pie charts — converting a fraction of the circle into an actual quantity without going through the total.
Chapter 3 · What Alex would actually do
Here's the honest advice, and it isn't "do more papers."
Sort every wrong answer before you revise anything. There are only two kinds: the child couldn't set it up (a concept gap) or set it up right and slipped (execution). They need opposite fixes. Re-teaching a topic won't fix a misread, and more practice papers won't fix a ratio concept that was never solid. If the slips are the bigger pile, our companion post on P6 careless mistakes goes deeper on that half.
Ask "why", not "what". The fastest diagnostic in maths is asking your child to explain the first step — not to produce the answer. If they can say "this ⅓ is of what's left, not the whole", the concept is there. If they go quiet, you've found the real gap in ten seconds.
Drill the two marking rules until they're automatic. Working and units (see above) are worth more than another topic revision. Two habits, both trainable in a week: every open-ended answer shows its steps, and every answer line ends with the unit the question asked for. Mark your child's practice papers strictly on these two — deduct as the examiner would. It stings once and then stops happening.
Plan around the 2026 changes. Skip Speed in older ten-year-series papers — it's no longer examinable. Give the time back to Ratio and Average, which are now landing in P6 alongside everything else.
Revise your own wrong questions, not fresh ones. A question your child already got wrong is worth more than a new one, because it's evidence. The pattern in a term's worth of mistakes tells you exactly which two or three topics to spend December on — and it's usually a much shorter list than parents expect.
🎯 This is what PSLE Alex is built around. Every question your child gets wrong is tracked back to its syllabus topic, so the weak spots surface as a ranked list instead of a vague feeling — and the practice that follows targets those, rather than another mixed paper.
👉 Try a free 5-question P6 maths check — no account needed to start. Look at which kind of slip repeats, not just the score.
Frequently asked questions
What is the PSLE Math exam format in 2026? Two papers, 100 marks, ~2h30. Paper 1: 1h10, 50 marks, no calculator, 30 questions (18 MCQ + 12 short-answer). Paper 2: 1h20, 50 marks, calculator allowed, 15 questions (5 short-answer + 10 structured word problems). Exact per-question marks follow SEAB's subject document.
What changed in 2026? Speed removed (moved to Secondary 1); Average and Ratio moved from P5 to P6; papers reweighted to 50/50 from 45/55, with Paper 1 MCQ up 15→18 and short-answer down 15→12.
Which topics do P6 students find hardest? Fractions ("of the remainder"), ratio before-and-after problems, area vs perimeter, volume with unit conversion, decimals and place value, and angle/shape properties on figures not drawn to scale.
Does working still earn marks? Yes — method marks are awarded for a correct approach even when the final answer is wrong, and 2026 places more weight on clear, logical steps.
Format details compiled from SEAB's PSLE Mathematics subject document and MOE syllabus updates for 2026; exact marks, timings and question counts follow the SEAB subject document for the year. Compiled 18 Jul 2026.