This book is an essential aid for the student of the 4th grade of primary school, as it corresponds to the modern approach to teaching Mathematics. It is organized into units and follows the lessons of the school book, fully covering its content.

Each chapter includes:

• An analytical presentation of the theory with tables, work steps, and relevant examples
• Complete answers to all exercises and problems in the Student Book and Workbook
• Exercises and problems for practice that help reinforce new knowledge.

At the end of each unit, there is a test with review exercises covering the content of the entire unit. The book is completed with a glossary of mathematical concepts, followed by answers to all supplementary exercises and problems as well as review exercises.