Excerpt from The Progressive Mental Arithmetic, Vol. 2 IN his school work the author has felt the want of available exercises in mental arithmetic which would make for power to deal Off hand with number problems such as are met with out Of school. Conference with other school workers has shown that this feeling is shared by many. The progressive mental arithmetic is the result of an effort to meet this need. 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.