This book is an essential aid for students in the 3rd grade of elementary school, as it corresponds to the modern approach to teaching Mathematics. It is organized into sections and follows the lessons of the school book, covering the entire curriculum.

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's Book and the Workbook, as well as evaluation criteria from the Teacher's Book
• Exercises and problems for practice that help reinforce new knowledge

Each section concludes with review exercises that contribute to the student's proper preparation for the school examination.