Non-decimal currency Non-decimal currency A non-decimal currency is a currency that has sub-units that are a non-decimal fraction of the main unit, i.e. the number of sub-units in a main unit is not a power of 10. Today only two countries in the world use non-decimal currencies. Both of these countries are in Africa. These are Mauritania (1 ouguiya = 5 khoums) and Madagascar (1 ariary = 5 iraimbilanja). However these are only theoretically non-decimal, as in both cases the value of the main unit is so low that the sub-unit is too small to be of any practical use and coins
Currency symbol United Kingdom often uses an interpunct as the decimal point on price stickers (e.g., £5·52), although no longer generally does so in print. Commas (e.g. €5,00) or decimal points (e.g. $50.00) are common separators used in other countries. See decimal separator for information on international standards. Older currency symbols have evolved slowly, often from previous currencies. The dollar and peso symbols originated from the mark employed to denote the Spanish , whereas the pound and lira symbols evolved from an L standing for , a Roman pound of silver. Newly invented currencies and currencies adopting new symbols have symbolism closer