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 Act 1982 It is still in force unamended. Currency Act 1982 The Currency Act 1982 (c 3) is an Act of the Parliament of the United Kingdom. Following Decimal Day in 1971, when the British monetary system changed from pound/shilling/penny to the metric £1 = 100p system, the new currency was known as the "new pound" and therefore the "new pence". By 1982, the use of "new pence" was out of use, and replaced with "penny". The Act sanctions the use of "penny" rather than "new penny" in common usage, such as on coins produced by the Royal Mint. The Act covers