Coins of the Rhodesian dollar Coins of the Rhodesian dollar The coins of the Rhodesian dollar were part of the physical form of Rhodesia's historical currency, the Rhodesian dollar. (click for obverse image) (click for reverse image) In late 1969 Rhodesian voters agreed to adopt a new constitution which would establish a republic. On February 17, 1970, Rhodesia changed over to decimal currency. The Federation of Rhodesia and Nyasaland halfpenny and penny were withdrawn from circulation and replaced with the cent coin, 1 cent coin (click for image) (their values were not exactly equal) and a cent (3d) "tickey". The new coins depicted the Rhodesian
Decimal decimal fractions were non-positional. However, counting rod fractions were positional. Qin Jiushao in his book Mathematical Treatise in Nine Sections (1247) denoted 0.96644 by J. Lennart Berggren notes that positional decimal fractions appear for the first time in a book by the Arab mathematician Abu'l-Hasan al-Uqlidisi written in the 10th century. The Jewish mathematician Immanuel Bonfils used decimal fractions around 1350, anticipating Simon Stevin, but did not develop any notation to represent them. The Persian mathematician Jamshīd al-Kāshī claimed to have discovered decimal fractions himself in the 15th century. Al Khwarizmi introduced fraction to Islamic countries in the early 9th