The Natural Arithmetic, Vol. 3 (Classic Reprint)

Excerpt from The Natural Arithmetic, Vol. 3

The psychological fact that all mathematical knowledge is a system of relations, or ratios, has been recognized throughout the series. For the purpose of suggesting to the pupils the application of number to magnitude, the simple geometric forms have been gradually introduced.

In book III the treatment of the several branches of the subject is completed, and, as a means of bringing to gether the parts of each subject in a general review, a summary is given of all the processes involved in com mon fractions, decimal fractions, and percentage.

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