Intermediate Essential Principles (Classic Reprint) - Tapa blanda

Sinopsis

Excerpt from Intermediate Essential Principles

Tms book is for boys and girls who can use numbers into the thousands in addition and subtraction, who know what ratio is and understand something about fractions, who know some facts of measures, and who have studied the multipli cation tables. For these boys and girls there is here about two years' work, chiefly in practice, partly in extension of knowledge.

The new topics introduced here are direct outgrow the of earlier topics, and are presented in their simplest forms and relations. Ratio develops into proportion, and proportion into equation. The common fraction is correlated with percentage, with the decimal, and with ratio and proportion. Factoring is centered upon dividing, and cancellation is centered upon both. The method of long division is explained. A few pages are devoted to each of two topics, greatest common divisor and least common multiple. But the emphasis of the book is upon the fundamental operations of addition and subtraction, multi plication and division for drill, and upon fractions and meas ures for development of arithmetical knowledge and skill. The advanced topics include the multiplication and division of fractions by fractions and of decimals by decimals, the princi ples of the fundamental operations and processes, very simple measuring by geometric methods, a series of exercises in United States money, and a brief treatment of simple interest.

This book is more nearly topical in arrangement than the Primary Book of this Series; but an essentially spiral char acter is secured by frequent reviews. Subjects are not ex hansted before we pass to new subjects or return to old subjects displayed in new matter.

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