Many students in Singapore find PSLE Math problem sums to be one of the most challenging parts of the exam. They may be able to calculate. They may understand formulas. But when it comes to multi-step problem solving, they get stuck. The issue is often problem structure. PSLE problem sums require students to break down information correctly, identify the sequence of steps, and track intermediate values. Misunderstanding 'Remaining' and Multi-Step Logic is a common mistake. The model method is essential for solving PSLE problem sums, but many students draw incorrect models or skip drawing entirely. Cognitive overload occurs when students try to solve everything at once instead of breaking it down. Practice without strategy leads to repeating mistakes. Effective PSLE Math tuition focuses on thinking frameworks and error analysis.