The Desire To Economize Time And Mental Effort In Arithmetical Computations, And To Eliminate Human Liability To Error Is Probably As Old As The Science Of Arithmetic Itself.
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The Desire To Economize Time And Mental
The Desire To Economize Time And Mental Effort In Arithmetical Computations, And To Eliminate Human Liability To Error Is Probably As Old As The Science Of Arithmetic Itself.
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