The Elements of Arithmetic (Classic Reprint) - Softcover

Pierce, Ella M.

 
9781334674693: The Elements of Arithmetic (Classic Reprint)

Inhaltsangabe

Excerpt from The Elements of Arithmetic

The development of the principle of addition and subtraction by endings is different from either of the two usual ways, but, by a careful selection of the facts, a larger number of them may be used at once to illustrate the principle, thus making it clearer. The whole thirty-six combinations making numbers to nine are reviewed at once, and the principle of adding by endings applied to numbers up to one hundred. This application is easy, since those number facts upon which it depends are the simplest, and in the application no result goes into the next ten above. The principle of subtraction by endings is applied to one hundred in the same way as to the corresponding subtraction facts through nine.

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