""Normal Arithmetic: A Textbook, Theoretical and Practical"" is a comprehensive mathematical textbook written by Silas Lawrence Loomis and originally published in 1859. The book covers a wide range of arithmetic topics, from the basic operations of addition, subtraction, multiplication, and division, to more advanced concepts such as fractions, decimals, and percentages. The book is divided into three main sections: theoretical arithmetic, practical arithmetic, and mental arithmetic. The theoretical section covers the principles and rules of arithmetic, including the properties of numbers, the order of operations, and the laws of fractions. The practical section provides numerous examples and exercises to help students apply these principles in real-world situations, such as calculating interest, discounts, and taxes. The mental arithmetic section focuses on developing the student's ability to perform calculations quickly and accurately in their head. Throughout the book, Loomis emphasizes the importance of understanding the underlying principles of arithmetic, rather than just memorizing formulas and procedures. He also provides clear explanations and detailed examples to help students grasp each concept. Overall, ""Normal Arithmetic"" is a valuable resource for students, teachers, and anyone looking to improve their mathematical skills. Its combination of theoretical and practical instruction makes it a comprehensive guide to arithmetic that is still relevant today.In Six Parts, Viz.: Decimal Numbers, Denominate Numbers, Per Centage, Proportion, Powers, Roots And Series, Miscellaneous Subjects.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.