A Mental Arithmetic (Paperback) (ISBN-13: 9781022070523)

As the title suggests, this book is a comprehensive guide to mental arithmetic. It covers addition, subtraction, multiplication, and division, as well as fractions, decimals, and percentages. Written by George Albert Wentworth, a renowned mathematics professor, this book is a must-read for anyone looking to improve their mathematical skills.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

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