Excerpt from A Practical Arithmetic, Designed for Grammar Schools Entered according to Act of Congress, in the year 1880, by george E. Seymour, In the Othee of the Librarian of Congress. At Washington. The Elementary Arithmetic and the Practical Arithmetic are de signed to embrace all those subjects usually found in the more voluminous series of Arithmetics now in very general use. By a methodical arrangement of topics, all unnecessary repetition has been avoided; and by giving prominence to those subjects alone which are the key to the science of Arithmetic, brevity has been secured without sacrificing either fulness or clearness of treatment. No attempt has been made to make the book either a complete dictionary of mathematical terms or a mere encyclopaedia of useful mathematical knowledge. Arithmetic should be regarded in the school-room both as a science and as an art: as a science, so far as it deals with the principles which underlie its processes and its rules; and as an art, so far as it exemplifies these rules and these processes in their varied applications in solving problems that arise in the business of every-day life. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.