To add numbers, you can use the SUM function or the addition sign (+). However, they are different. The SUM function adds cells together, as well as the numbers in a range.

The addition sign will not work for the data ranges. For example, the formula =A2:B3+A5 will not have you the sum of each cell in the range.

**Example 1: **Please add the numbers in columns A and B in the following table.

To add the two numbers together, you can use the SUM function or the addition sign (+).

**=SUM(A2:B2)=A2+B2**

**Example 2: **Please get the sum of the numbers in the range A2:B3 and the range A6:B6 together in the following table.

When using the addition sign (+) to add each cell together, you will get an error because the content in B3 is a text string, while the SUM function will get the sum of the rest five cells with numbers

**= SUM(A2:B3,A6:B6)=A2+B2+A3+B3+A6+B6**

**Notes: The SUM function**

**Formula:** =SUM(number1,[number2],…)

**Explanations:**

- Number 1 is required, the first number to add.

- Number 2… is optional, the rest of the numbers are to add.

**Cautions:**

– Only numeric values can be added. All cells with logical or text values will be ignored.

**Explanations:**

– The number is required, the number you want is the absolute value.