Introduction
Every year, parents and students ask the same question: what does PSLE Math actually test? The MOE publishes a detailed syllabus, and once you understand which topics carry the most marks, preparing becomes far less overwhelming.
This guide breaks down every major PSLE Math topic, explains what each involves, and tells you where most students lose marks — so you can focus revision where it counts.
The PSLE Math Syllabus at a Glance
What the exam covers
PSLE Math has two papers. Paper 1 consists of short-answer questions worth 1–2 marks each. Paper 2 contains longer word problems and structured questions worth 2–5 marks. The full paper is marked out of 100.
The syllabus covers five main areas: Numbers and Algebra, Measurement, Geometry, Statistics, and Problem Solving through Heuristics. Each area draws on content taught from Primary 1 to Primary 6, so the depth of understanding required builds over years, not months.
Numbers and Algebra: The Foundation
Fractions, decimals, percentages and ratio
This strand is the backbone of the paper. Whole numbers cover operations, factors, multiples and order of operations. Fractions require students to add, subtract, multiply and divide — including mixed numbers — and apply them in multi-step word problems.
Decimals and percentages appear together constantly. Students must convert between forms fluently and apply percentage change in real-world scenarios. Ratio is closely linked and often shows up in challenging Paper 2 questions involving parts and totals.
Algebra is introduced at Primary 6. Students form and simplify expressions and solve single-variable equations. Many students find this unfamiliar at first but it responds quickly to deliberate practice with a good tutor.
Measurement and Geometry: Where Marks Are Left on the Table
Area, perimeter, volume and angles
Measurement covers length, mass, volume, time and money. Composite figure problems — finding the area or perimeter of irregular shapes — are a regular source of lost marks because students misread the diagram rather than failing to know the formula.
Geometry covers angles in triangles and quadrilaterals, circle properties, and bearings. These topics reward visual thinkers but trip up students who memorise formulas without understanding when to apply them.
Statistics: Straightforward but Surprisingly Risky
Graphs, tables and averages
The statistics strand covers bar graphs, line graphs, pie charts, tables and averages. Questions test whether students can read data accurately and draw conclusions. The maths here is not difficult — but misreading a graph scale can cost 2–3 marks on a single question.
Heuristics: The Hardest and Most Scoreable Section
The strategies that separate AL1 from AL2
Heuristics questions are multi-step problems requiring students to choose and apply a strategy: guess and check, draw a diagram, make a systematic list, look for patterns, or work backwards. They carry the highest marks per item.
Students who have practised each strategy deliberately — understanding which method fits which problem type — consistently outscore those who rely on instinct. At OutClass Education, our Primary Math programme dedicates specific sessions to heuristics strategies, with max-6 classes that allow our tutors to identify and fix each student’s individual gaps before exam day.