Typos – Imagine trying to enter more and/or much larger values like this:
The =1+2 or =A+B Method – While you can enter =1+2+3 or =A1+B1+C2 and get fully accurate results, these methods are error prone for several reasons: Much of this can be applied to working with other functions as well. This section will discuss some best practices for working with the SUM function.