Dear parents,

This book is written in accordance with the curriculum of the school textbook "Mathematics Grade 4". It is structured into corresponding chapters and works both in parallel and complementarily with them.

It was created based on modern methodological approaches concerning the teaching of Mathematics, according to which the student is encouraged to acquire knowledge through observation, investigation, and discovery.

- The exercises of graded difficulty, many of which are accompanied by a solved example, as well as the Math problems contained in this book, aim to help the student gradually master mathematical concepts, acquire skills, and develop mathematical thinking.
- The notes titled "To the student" at the bottom of the book's pages aim to motivate your child to work in such a way as to achieve the best possible performance within their individual capabilities.
- At the end of the book, the solutions to all the exercises and problems contained are provided, so that the student is left with no doubts or uncertainties. I hope this book helps your child to love Mathematics and excel in it.

(from the author's preface)