Arithmetic for fun, Paperback/Yakov Perelman

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This book is not a usual arithmetic book. It does not present arithmetic concepts as tedious problems that are often fruitless for everyday life. Instead, using material that is accessible to the majority of the readers, it presents multiple tricks, puzzles and problems, and explains the notions behind them in an enjoyable and entertaining manner. It is recommended for both young students (as a complement to textbooks) and adults.