Pl. and Sol. Geometry and Pl. Trigonometry. Plane Trigonometry and Tables. Plane and Spherical Trigonometry. Surveying. Pl. and Sph. Trigonometry, Surveying, and Tables. Trigonometry, Surveying, and Navigation. Trigonometry Formulas. Logarithmic and Trigonometric Tables (Seven). Log. and Trig. Tables (Complete Edition). Analytic Geometry. Special Terms and Circular on Application. A HIGH SCHOOL ARITHMETIC (WENTWORTH & HILL'S PRACTICAL ARITHMETIC). BY G. A. WENTWORTH, A.M., POFESSOR OF MATHEMATICS IN PHILLIPS EXETER ACADEMY. FOR HIGH SCHOOLS AND ACADEMIES. TEACHERS' EDITION. BOSTON: PUBLISHED BY GINN & COMPANY. HARVARD COLLEGE LIORARY CP OF MISS ELLEN L. WENTWORTH MAY 8 1939 Entered according to Act of Congress, in the year 1888, by G. A. WENTWORTH, in the office of the Librarian of Congress, at Washington. TYPOGRAPHY BY J. S. CUSHING & Co., BOSTON. PRESSWORK BY GINN & Co., BOSTON. PREFACE. THIS HIS edition is intended for teachers, and for them only. The publishers will make every effort to keep the book from pupils; and teachers are urged to exercise the utmost care not to lose their copies, or to leave them where pupils can have access to them. It is hoped that young teachers will derive great advantage from studying the systematic arrangement of the arithmetical work, for such attention has been paid to this as the limitation of the page would allow. It is also expected that many teachers, who are pressed for time, will find great relief by not being obliged to work out every problem in the Arithmetic. PHILLIPS EXETER ACADEMY, G. A. WENTWORTH. |