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A Different Kind of Multiplication

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Visit this site: http://www.phy6.org/outreach/edu/roman.htm
Author:David P. Stern
Description: Roman numerals were an improvement on older notation and useful for the abacus, but seemingly impractical for multiplication. Yet a multiplication method was developed, and is described here. The Romans did not understand why it worked, but we now realize it was based on the binary system.
Levels: High School (9-12)
Languages: English
Resource Types: Course Notes
Math Topics: Multiplication, Number Sense/About Numbers, Place Value, History and Biography

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