<Li> Normalization is the conversion of a set of compound units to a standard form--for example rewriting "1 ft 13 in" as "2 ft 1 in". </Li> <P> Knowledge of the relationship between the various units of measure, their multiples and their submultiples forms an essential part of compound unit arithmetic . </P> <P> There are two basic approaches to compound unit arithmetic: </P> <Ul> <Li> Reduction--expansion method where all the compound unit variables are reduced to single unit variables, the calculation performed and the result expanded back to compound units . This approach is suited for automated calculations . A typical example is the handling of time by Microsoft Excel where all time intervals are processed internally as days and decimal fractions of a day . </Li> <Li> On - going normalization method in which each unit is treated separately and the problem is continuously normalized as the solution develops . This approach, which is widely described in classical texts, is best suited for manual calculations . An example of the ongoing normalization method as applied to addition is shown below . </Li> </Ul>

Types of mathematical operations can be done in excel