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Cover of How to make an adding machine that even adds Roman numerals

a novel ·

How to make an adding machine that even adds Roman numerals

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Instructions for making a "machine" of egg cartons and marbles and for using it to add and subtract numbers of various bases and also Roman numerals.

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Instructions for making a "machine" of egg cartons and marbles and for using it to add and subtract numbers of various bases and also Roman numerals.

M

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"Instructions for making a "machine" of egg cartons and marbles and for using it to add and subtract numbers of various bases and also Roman numerals."

— Margaret

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