A Fraction of History
- An extensive treatment of fractions appeared around 1600 B.C. in the Rhind Papyrus, which contained the work of Egyptians mathematicians.
The Egyptians did not express fractions as ratios such as 2:5 or 2/5.
They expressed ratios in unit fractions.
Egyptians used their symbols to represent this fraction.
1/3 + 1/15 would be represented as shown below:
Notice that all we care about is the man's feet. Feet pointing toward the direction of writing means add. Otherwise, it means subtract...
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Saturday, November 7, 2009
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