Excerpt from A Canadian High School ArithmeticThe habit Of constant checking in mathematical. Calcula tions is encouraged throughout the first chapter and in eludes explanations. Of. Tests for accuracy for the simple rules, and of'the method of checking by approximations. Algebraic solutions are advised - in certain types of prob lems, inasmuch as the purpose of Algebra is thus in a measure fulfilled and the recognition of the practical uses o...
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