*In this article, we will learn why and how we use SUM function in Microsoft Excel.*

*SUM function is one of the most commonly used “Mathematical” functions in Excel. It adds all the numbers in a range of cells and returns the sum of these values.*

With the help of examples, let us understand the use of SUM function in Excel.

Refer to these 5 different examples for the usage of SUM function in Microsoft Excel on the basis of following sample data:

**1 ^{st} Example**:-

In this example, we will learn how to use SUM function. We have a range of numbers and we want to add all the numbers.

**Follow the steps given below**:-

- Enter the function in cell A14
- =SUM(A8:A12), Press Enter

**2 ^{nd} Example**:-

In this example, we’ll first add the values from range and then we’ll add any number to it.

**Follow the steps given below**:-

- Enter the function in cell B14
- =SUM(B8:B12,7), Press Enter

It gives us 33 as an answer because function adds the values in cell B8 to B12 first, and then adds 7 to give us 33.

**3 ^{rd} Example**:-

In this example, we will return the sum for multiple ranges.

**Follow the steps given below**:-

- Enter the function in cell C14
- =SUM(A8:C12), Press Enter

The function has returned the sum of 3 different ranges: A8:A12, B8:B12 and C8:C12.

**4 ^{th} Example**:-

In this example, we will see what happens when our range contains any logical value.

**Follow the steps given below**:-

- Enter the function in cell D14
- =SUM(D8:D12), Press Enter

The function has returned 16 values. It means SUM function ignores any text value which is comes within specified range.

**5 ^{th} Example:-**

In this example, we will see what happens when we enter error value in the range for which we want to calculate sum.

**Follow the steps given below**:-

- Enter the function in cell E14
- =SUM(E8:E12), Press Enter

It returns #N/A error only. Because, the function does not allow any error value in the range and hence it returns an error.

So, this is how SUM function works in different situations.

# Video: How to use SUM function in Microsoft Excel

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how to sum odd no. in a row .but row have an even no. also.