Excerpt from Key to the North American Arithmetic: Part Second and Part Third; For the Use of Teachers This book contains solutions of some of the questions in the Oral exercises, and answers to all the examples in the Written exercises, of the N orth American Arithmetic, Part Second It also contains answers to all the examples, and solutions to the more difficult questions in the exercises of Part Third. To those who have been accustomed to teaching arithmetic ana lytically, that portion of the Key which relates to the Oral exercises, will be useless. N or need it be used by any teacher who will L'tm. Part Second with a class, and proceed step by step throuorh eve section. But it may often happen, that a teacher unacquainted wi the method of instructing in mental arithmetic, will be called to the instruction of a school, in which the scholars have already made some progress therein. In such cases, the solutions will be found convenient. 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.