P4 Maths — Parents' Most Asked Questions

P4 Maths builds on P3 foundations and introduces several new topics

1. (1) Numbers — whole numbers up to 10,000, the four operations, factors and multiples, and an introduction to fractions.
2. (2) Measurement — area and perimeter of squares and rectangles, time (including 24-hour clock).
3. (3) Geometry — angles, perpendicular and parallel lines, squares, rectangles, and triangles.
4. (4) Statistics — reading and interpreting bar graphs.
5. (5) Problem solving — word problems begin to combine multiple operations. Problem sums in P4 are more complex than P3 — students must read carefully and identify what operations to use.

Most P4 students find these areas hardest

1. (1) Factors and multiples — understanding the difference between factors (numbers that divide evenly) and multiples (numbers in a times table), and finding common factors or common multiples.
2. (2) Area and perimeter of composite shapes — shapes made up of more than one rectangle, requiring students to find missing sides.
3. (3) Multi-step word problems — P4 word problems often require 2 or more operations to solve (e.g., add first, then multiply).
4. (4) Angles — measuring angles with a protractor and identifying angle types (acute, right, obtuse). These require both practice and careful reading.

Effective P4 Maths revision

1. (1) Master basic times tables (1-12) — if multiplication and division are not automatic, word problems become very difficult.
2. (2) Do 10-15 minutes of mental arithmetic daily — quick recall of number bonds, times tables, and simple additions.
3. (3) Practice word problems — read the question twice, identify the key information, and decide which operations to use before solving.
4. (4) Draw models for word problems — bar diagrams help visualise relationships between numbers.
5. (5) Review mistakes immediately — when your child gets a problem wrong, ask them to explain why the correct answer is right. Aim for 30 minutes of focused practice daily.

Common mistakes at P4 level

1. (1) Confusing area and perimeter — area measures the inside (cm²), perimeter measures the boundary (cm).
2. (2) Factor/multiple confusion — mixing up factors (divide) with multiples (multiply).
3. (3) Missing units in answers — forgetting to write cm, cm², ml, etc.
4. (4) Rushing through easy questions — P4 exams often have trick questions in the first few items.
5. (5) Not showing working — even correct answers can lose marks if workings are unclear.
6. (6) Angle measurement errors — not aligning the protractor correctly with the vertex and baseline.

P4 Maths is the foundation for everything in P5 and PSLE

1. (1) P4 factors and multiples → P5/6 fractions and ratios — these topics are deeply connected.
2. (2) P4 area and perimeter → P5/6 composite shapes and volume.
3. (3) P4 angles → P5/6 geometry — by P6, geometry questions combine angles with triangles and circles.
4. (4) P4 bar models → P5/6 complex multi-step problem solving. If your child has gaps in P4 topics, P5 becomes very difficult. Use P4 wisely: focus on building strong foundations, especially in factors/multiples and word problems. Consistent daily practice is more effective than last-minute cramming.

Recommended P4 Maths resources

1. (1) My Pals Are Here! Maths — widely used in Singapore schools, comprehensive with clear worked examples.
2. (2) SAP Targeting Maths — progressive difficulty levels, good for building confidence.
3. (3) Mavis Maths Problem Sums — focuses on problem-solving with model solutions.
4. (4) Blitzing Maths (Upper Primary) — useful for building speed and accuracy.
5. (5) School assessment past year papers — schools often repeat similar question types. P4 is also a good time to start Maths Olympiad Beginner books for students who enjoy and excel at Maths — this builds advanced problem-solving skills early.