Updated: 10/02/2017 by Computer Hope

Sum may refer to any of the following:

1. In mathematics, a sum is the total obtained from adding numbers. For example, the sum of two and two is four.

2. Sum is chat slang for some.


3. In Microsoft Excel, sum is a formula syntax for adding, subtracting, or getting the total numerical content of specific cells. Below are some examples of how the sum formula may be used.

  • =sum(a1+a10), adds cell a1 and a10.
  • =sum(a1-a10), subtracts a1 from a10.
  • =sum(a1:a10), adds all cells between a1 and a10.

Average, Spreadsheet terms, SUMIF