Content deleted Content added
m →History of decimal fractions: and wikilink |
m →History of decimal fractions: swap two sentences |
||
Line 124:
=== History of decimal fractions ===
[[File:Rod fraction.jpg|thumb|right|150px|counting rod decimal fraction 1/7]]
Starting from the 2nd century BC, some Chinese units for length were based on divisions into ten; by the 3rd century AD, these metrological units were used to express decimal fractions of lengths, non-positionally.<ref name=jnfractn1>{{Cite book | author=Joseph Needham | author-link=Joseph Needham | chapter = 19.2 Decimals, Metrology, and the Handling of Large Numbers |pages=82–90 | title = Science and Civilisation in China |volume=III, "Mathematics and the Sciences of the Heavens and the Earth" | title-link=Science and Civilisation in China | year = 1959 | publisher = Cambridge University Press}}</ref>
:{{lang|zh|寸}}
|