How to Add Numbers Using the SUM Function in Excel The SUM function is one of Excel’s foundational formulas, designed to add numbers with precision and flexibility.

How to create a SUM formula in Excel. Method 1: Using SUM and VLOOKUP nested function . The SUM formula is simple. Type =sum and enter the values or cell addresses for the values to sum. However, when ...

To add an Excel Sum formula across multiple sheets, determine the range of sheets in question by separating them with a colon in your Sum formula, written like so: =SUM(Sheet1:Sheet12!Cell#).

Below are more guides on Excel’s SUM function from our extensive range of articles.. Top Excel Formulas for Speed & Performance in Large Worksheets; How to Use Dynamic Arrays for Running Totals ...

How to use AutoSum in Excel. AutoSum works best when you have a column or row of numbers you want to add up. 1. Click the empty cell underneath the column of numbers that you want to add up.