Dubbs' Complete Mental Arithmetic: A Volume of Carefully Graded Exercises Adapted to the Use of All Schools
Eugene L. Dubbs
Jan 1893 · American Book Company
Ebook
220
Pages
About this ebook
First edition of Dubbs’s work on mental arithmetic. In the preface, the author asserts that this subject is among the most important taught in schools, as it develops the reasoning faculties more rapidly than any other discipline. The book comprises a series of problems covering the principal areas of elementary mathematics, including the fundamental operations, fractions, interest, discounts, and percentages, all intended to be completed without the use of pencil or paper.
First edition of Dubbs’s work on mental arithmetic. In the preface, the author asserts that this subject is among the most important taught in schools, as it develops the reasoning faculties more rapidly than any other discipline. The book comprises a series of problems covering the principal are...
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