This is a practice book with more than 800 intensive questions ranging for basic to challenging, based on the Primary 3 Mathematics syllabus. The book is designed to help students systematically revise the topics learnt in school. Each graded intensive practice comprises of short questions and problem sums on every topic to prepare for the examinations. The questions are challenging and require higher-order thinking skills. Detailed answers and explanations are provided for all questions to facilitate students to work on their mistakes and misconceptions. This book will serve as an excellent tool for students in their preparations for tests and examinations.