“Entertaining Arithmetic” by Yakov Isaacovich Perelman is not just a textbook on mathematics, but a real find for anyone who wants to look at numbers and calculations from a completely new side. This book, published in the middle of the 20th century, continues to be relevant and in demand among mathematics lovers and those who seek to develop their analytical abilities. Perelman, known for his fascinating and accessible explanations of complex mathematical concepts, invites readers to immerse themselves in the world of numbers, where arithmetic becomes not only useful, but also exciting. From the first pages of the book, the reader gets into an exciting journey through mathematical puzzles and tasks that not only entertain, but also make you think. Perelman masterfully combines simplicity of presentation with depth of content, which makes his work available to a wide audience. In "Entertaining Arithmetic" you will find many examples, tasks and puzzles that will help develop logical thinking and teach how to apply arithmetic in everyday life. This book will be interesting for both schoolchildren and adults who want to refresh their knowledge or just love mathematics again. If you’ve ever had difficulty with arithmetic or found it boring, “Entertaining Arithmetic” will change your mind. There is no place for dry formulations and boring theorems only fascinating stories and practical problems that will help you see arithmetic as a living and dynamic science. The topics raised in the book are diverse and cover a wide range of issues, from simple calculations to more complex tasks that require a creative approach. Perelman touches on aspects such as numerical series, properties of numbers, and even elements of combinatorics, emphasizing that mathematics is not just a set of rules, but a whole world full of secrets and discoveries. The book encourages the reader to think outside the box and look for out-of-the-box solutions, making it particularly valuable in today's world, where creativity and analytical skills are becoming increasingly important. Perelman's style is lively and accessible. He skillfully uses metaphors and analogies to explain even the most complex concepts. His other well-known works, such as “Entertaining Geometry” and “Entertaining Physics”, are also written in this spirit, which makes them an excellent addition to “Entertaining Arithmetic”. Readers who are already familiar with his style will appreciate this book, and beginners will be pleasantly surprised by how easy and interesting it is to learn mathematics. If you are looking for books on mathematics that not only teach, but also entertain, “Entertaining Arithmetic” will be an excellent choice. It is suitable for students, schoolchildren, parents who want to help their children in their studies, and anyone who wants to expand their horizons in the world of numbers. Do not miss the opportunity to discover the fascinating world of arithmetic with Jacob Isaacovich Perelman - this book will become your faithful companion in mathematical adventures!