# Sum

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.