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THE

COMMON-SCHOOL ARITHMETIC:

A Practical Treatise

ON

THE SCIENCE OF NUMBERS.

BY

DANA P. COLBURN,

PRINCIPAL OF THE RHODE ISLAND STATE NORMAL SCHOOL, BRISTOL, R Log

AUTHOR OP "ARITHMETIC AND ITS APPLICATIONS," ETC.

PHILADELPHIA:
H. COW PERTH WAIT & CO

HARVARD
UNIVERSITY

LIBRARY
6477172

Entered, according to the Act of Congress, in the year 1858, by

DANA P. COLBURN,

in the Clerk's Office of the District Court of the United States for the District of

Rhode Island.

PREFACE.

The title of this work indicates its character. It has been prepared for a text-book in Common Schools, and is designed to be a thoroughly practical treatise. It contains an exposition of the leading principles of Arithmetic, and illustrates their most important practical applications.

Its lessons are arranged in what seems to the author a natural and logical order; and their mutual dependencies and connections are, as far as possible, indicated. Its exercises and problems are numerous and varied, requiring, it is believed, such practice as will secure skill in performing numerical operations, and readiness in applying them.

The author has endeavored to illustrate clearly or demonstrate rigidly the truth of every principle and process; to make every definition and every statement clear and accurate ; to avoid arbitrary rules and processes ; and, in short, to prepare a work which shall be adapted to the wants and circumstances of pupils in Common Schools, and which shall at the same time tend to elevate the standard of elementary mathematical instruction.

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