All school kids got used to it very quickly. The maths of predecimal currencies was another reason for the conversion to a decimal based currency system.
There were 12 Pennies in a Shilling, and 20 Shilling in a Pound. That is what you need to remember.
Add these two predecimal values -
£3/15/6 - 3 Pounds, 15 Shillings and 6 Pence.
£2/ 7/ 8 - 2 Pounds, 7 Shillings and 8 Pence.
Add the pennies first. 8 Pence + 6 Pence = 14 Pence. 14 Pence = 1 Shilling and 2 Pence. Put down the 2 Pence and carry the 1 Shilling.
£ / / 2
Next, add the Shillings starting with the carried over 1 Shilling from the Pence addition.
1 Shilling + 7 Shillings + 15 Shillings = 23 Shillings. 23 Shillings = 1 Pound and 3 Shillings. Put down the 3 Shillings and carry the 1 Pound.
£ / 3/ 2
Finally, add the Pounds starting with the carried over 1 Pound from the Shillings addition.
1 Pound + 2 Pound + 3 Pound = 6 Pounds.
£6/ 3/ 2 - Total = 6 Pounds, 3 Shillings and 2 Pence.
Easy. This was mental arithmetic for shopkeepers and other business people in predecimal days.
None. A Threepence represented three Pennies in the various British based predecimal currencies. There were 240 predecimal Pennies in a predecimal Pound, so there were 80 Threepences in a predecimal Pound. At the time of Britains changeover to decimal currency in 1971, the old redundant Threepence became the equivalent of 1.25 New Pence. There are 100 New Pence in the British decimal Pound.
I would look at Sullivan and other math tutoring sites. They will help you learn the math you need to.
do the math yourself
Apologize for your existence to your math teacher and beg her/him to beat you with a math book.
In math, the LCD means the Lowest Common Denominator.
A Sixpence was a small predecimal British coin. Half a Sixpence was a Threepence, an even smaller predecimal British coin.
340 decimal British Pounds converts to 34,000 decimal British Pence. 340 predecimal British Pounds converts to 81,600 predecimal British Pence.
If you refer to the predecimal British Halfpenny, it was written as 1/2d.
None. A Threepence represented three Pennies in the various British based predecimal currencies. There were 240 predecimal Pennies in a predecimal Pound, so there were 80 Threepences in a predecimal Pound. At the time of Britains changeover to decimal currency in 1971, the old redundant Threepence became the equivalent of 1.25 New Pence. There are 100 New Pence in the British decimal Pound.
All British predecimal Pennies, Halfpennies and Farthings minted since 1860 are bronze.
There are 100 Pence in the current British Pound. There were 240 Pence in the predecimal British Pound.
The copper content of 20th century British predecimal Pennies, Halfpennies and Farthings varied from 95.5 to 97%. When the use of silver in coins was discontinued after 1946, all British "silver" coins were made from a copper-nickel alloy consisting most commonly of 75% and 25% nickel.
All British general circulation predecimal Pennies, Halfpennies and Farthings were made from bronze from 1860 to 1967.
There was no 1970 British Crown (Five Shilling) coin minted. The last British predecimal Crown (Five Shilling) coin to be minted was in 1965.
No. No British Halfpenny, either decimal or predecimal, is legal tender any longer.
The British predecimal Halfpenny, Penny, Threepence and Sixpence did not have an equivalent coin in decimal currency.
The weight, dimensions and metal content of predecimal British coins changed periodicially.The last mintings of the predecimal British coins weighed as follows -Farthing (bronze) - 2.852 gramsHalfpenny (bronze) - 5.658 gramsPenny (bronze) - 9.396 gramsThreepence (nickel-brass) - 6.8 gramsSixpence (cupro-nickel) - 2.83 gramsShilling (cupro-nickel) - 5.63 gramsFlorin (cupro-nickel) - 11.5 gramsHalfcrown (cupro-nickel) - 14.2 gramsCrown (cupro-nickel) - 28.2 grams