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NEW

PRACTICAL ARITHMETIC

FOR

COMMON SCHOOLS AND ACADEMIES

DEPARTMENT OF EDUCATION LELAND STANFORD JUNIOR UNIVERSITY

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

613399

C

ROBINSON'S

NEW ARITHMETICS

Robinson's New Primary Arithmetic
Robinson's New Rudiments of Arithmetic
Robinson's New Intellectual Arithmetic
Robinson's New Practical Arithmetic
Robinson's New Higher Arithmetic

Two-Book Course for Graded Schools

Robinson's New Rudiments of Arithmetic
Robinson's New Practical Arithmetic

Copyright, 1892, by AMERICAN BOOK COMPANY

NEW PRACTICAL

W. P. IO

PREFACEЕ.

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.

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