A Brief Overview of Pharmacy Calculations for Pharmacy - Free CE ...

Roman Numerals Three Cardinal Rules:#1 If a symbol follows another symbol ofequal or greater value, the two symbols areadded together#2 If a symbol follows another symbol oflower value, the lower value is subtractedfrom the higher valuess= one-halfI = oneV = fiveX = tenL = fiftyC = onehundred#3 First perform any necessary subtraction,then add the resulting values together to getthe final answer