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CoPYRIGHT, 1897,

BY D. C. HEATH & CO.

TYPoGRAPHY BY C. J. PETERS & SoN, Boston.

PRESSWORK BY ROCKWELL & CHURCHILL.

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THE SENIOR ARITHMETIC is intended for use in the higher grammar grades, beginning with the sixth year. The first eight pages are devoted to definitions in review, covering fundamental subjects which should be mastered before the book is taken up. The senior arithmetic proper begins with decimals. Though largely review matter, denominate numbers are treated with considerable fulness. Teachers are expected, however, to use their discretion as to omissions in this subject. It has been the author's aim to employ such definitions, solutions, explanations, and rules as can be readily comprehended and applied by the pupils, unaided by the teacher. While care has been exercised in selecting a great variety of practical business problems and in arranging them progressively, the development of mental power has been kept constantly in view. The arrangement of this book is topical, but subjects previously studied are kept fresh in the minds of the pupils by frequent carefully prepared reviews. The practice of referring percentage problems back to the original questions of relation has proven highly suc

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