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On the Multiplication of Decimals
Published online by Cambridge University Press: 03 November 2016
Extract
So-called “standard form.”
Method I have used with success as regards clearness and accuracy. (I believe this is Mr. Pendlebury’s arrangement.)
Ride. Put singles (or units) figure of multiplier under the last figure of multiplicand.
Arguments in favour of this second plan :
Instead of such a mechanical rule as Mr. Borchardt’s (p. 69, Borchardt’s ,Arithmetical Types and Examples), we get the continued use of the sound and fundamental rule of “putting each first figure of a partial product underneath the figure to which that partial product is due.” And this also corresponds to the method of algebraic multiplication.
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