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# The greek history of fractions

Updated: 12/24/2022

Wiki User

15y ago

In early Egyptian and Greek mathematics, unit fractions were generally the only ones present. This meant that the only numerator they could use was the number 1. The notation was a mark above or to the right of a number to indicate that it was the denominator of the number 1. The Romans used a system of words indicating parts of a whole. A unit of weight in ancient Rome was the as, which was made of 12 uncias. It was from this that the Romans derived a fraction system based on the number 12. For example, 1/12 was uncia, and thus 11/12 was indicated by deunx (for de uncia) or 1/12 taken away. Other fractions were indicated as : 10/12 dextans (for de sextans),

2/12 or 1/6 sextans (for sextan as)

8/12 bes (for bi as) also duae partes (2/3)

1/24 semuncia (for semi uncia)

7/12 septunx (for septem unciae)

1/48 sicilicus

6/12 or 1/2 semis (for semi as)

1/72 scriptulum

5/12 quincunx (for quinque unciae)

1/144 scripulum

4/12 or 1/3 triens (for trien as)

1/288 scrupulum

Wiki User

15y ago