Because the previous system was very complicated and computers and calculators would have had difficulty calculating in the old system which was superseded by decimalisation in 1971.
1971
1972
1971
1970
February 1971
In 1971.
What year did Miguel Cabrera start playing baseball
Myths began to start in 800 BC
1877
February 1971
1967
Prior to decimalisation there were 240 pennies in 1 pound. This was stated as 240d = £1 One modern penny = 2.4 old pennies at the time of decimalisation in February 1971.
Four predecimal British Pennies convert to 1.666 New Pence at decimalisation.
In 1971.
1972
Prior to decimalisation, there were 240 Pennies in a British Pound. On decimalisation, there are 100 Pennies in a British Pound.
Prior to decimalisation in 1971 a Shilling was one twentieth of a Pound. At decimalisation, the Shilling converted to 5 New Pence.
The British Shilling converted to 5 New Pence at decimalisation. The Australian and New Zealand Shillings, amongst many others, converted to 10 cents at decimalisation.
There is only standard form for decimalisation - no other option.
15th February 1971, the UK introduced decimal currency
In the UK penny is abbreviated to p.Before decimalisation in 1971, penny was abbreviated to d