ROBINSON'S

NEW

PRACTICAL ARITHMETIC

FOR

COMMON SCHOOLS AND ACADEMIES

NEW YORK .:. CINCINNATI .:. CHICAGO
AMERICAN BOOK COMPANY

Educ 118.92.5

Educ T 118,92. 755 HARVARD COLLEGE LIBRARY

GIFT OF

MRS. CHARLES S. PEIRCE
JUNE 28, 1915

ROBINSON'S NEW ARITHMETICS

Graded to the wants of Primary, Intermediate, Grammar,
Normal, and High Schools, Academies, and Colleges.

1

NEW PRIMARY ARITHMETIC.

2 NEW INTELLECTUAL ARITHMETIC.

NEW RUDIMENTS OF ARITHMETIC.

५

NEW PRACTICAL ARITHMETIC.

KEY TO NEW PRACTICAL ARITHMETIC. (In preparation.)

SHIGHER ARITHMETIC.

(In preparation.)

ROBINSON'S ARITHMETICS have for many years
had a wide use among the best American schools, and the
new edition here announced preserves, in a new dress, with
careful editing and revision, the leading features which have
proved so satisfactory both to teacher and to pupil.

In the revision, the order of subjects and the numbering of
paragraphs have been preserved, and the new edition can be
used without difficulty in the same classes with the old.

COPYRIGHT, 1892, BY AMERICAN BOOK COMPANY.

ROB'S. NEW PRACT. AR.

Printed by

William Tvison

New York, U. S. A.

PREFACE.

ROBINSON'S Practical Arithmetic has been before the public so many years and its plan and features are so well known that it hardly seems necessary to call attention to them; but the new features of this revised edition are quite as worthy of mention as any in the older book. And here it behooves us to say that nothing of value or merit in the old Robinson's Practical Arithmetic has been discarded. The scheme of revision has been rather one of judicious addition than of omission, and yet by an economical adjustment and by an occasional dropping out of useless matter, it has been possible to add many valuable features and much new matter to the book without materially increasing its size.

The revision has not been in the nature of patchwork, as so many revisions are apt to be, but has been conducted upon a systematic plan, which runs through the entire book and has regulated the arrangement of the subjects and their order of sequence. Two great points have been borne in mind in the sequence of subjects. First, it is such that each subject leads naturally and by easy steps to the next; and second, the most important and most useful applications of the fundamental principles of arithmetic, as well as the principles themselves, have been placed at an early stage in the book. This matter is of far greater importance than might appear at first sight. More than one half of our children are obliged to leave school without completing any book on arithmetic, and when such important subjects as the measurement of land, lumber, etc., are placed at the end of a book as an afterthought, many pupils are obliged to battle with the intricacies of less practical operations, at the expense of this useful and necessary instruction.

The book, in its present shape, meets the requirements of all the standard examinations prescribed for admission to academic grade or for preparation for the best scientific schools of the country, but it meets them in a logical and sensible way.