WELLS' MATHEMATICAL SERIES. Academic Arithmetic. Academic Algebra. Higher Algebra. University Algebra. College Algebra. Plane Geometry. Solid Geometry. Plane and Solid Geometry. Plane and Solid Geometry. Revised. Plane Trigonometry. Essentials of Trigonometry. Logarithms (flexible covers). Elementary Treatise on Logarithms. Special Catalogue and Terms on application. AN ACADEMIC ARITHMETIC FOR ACADEMIES, HIGH AND COMMERCIAL SCHOOLS. BY WEBSTER WELLS, S.B., PROFESSOR OF MATHEMATICS IN THE MASSACHUSETTS LEACH, SHEWELL, & SANBORN. BOSTON. NEW YORK. CHICAGO. PREFACE. THE HE present work is intended to furnish a thorough course in all those portions of Arithmetic which are required for admission to any college or scientific school. The pupil is assumed to have already studied the more elementary parts of the subject in a text-book of lower grade; and only enough examples are given in the earlier chapters to afford material for a review. Great pains have been taken, in the selection of examples and problems, to illustrate every important arithmetical process; and in Chapter XXV. there will be found a set of miscellaneous problems of somewhat greater difficulty than those in the preceding chapters, furnishing a complete review of the entire subject. The chapters on the Metric System have been arranged in such a way that they may be taken after the other portions of the work have been studied, or omitted altogether, at the option of the teacher. No examples involving a knowledge of the Metric System are given, except in Chapter XIII., and Arts. 256, 257, and 378. The Appendix contains topics of minor importance to the majority of pupils, but still liable to be called for in college entrance examinations. MASS. INSTITUTE OF WEBSTER WELLS. iii |