Microsoft's spreadsheet program can do way more than you might realize. These are the hacks and tricks you need to know.

SUM is the spreadsheet equivalent of an open invite: it welcomes everything into the total, whether it belongs there or not.

You can use the Sum function in Microsoft Office Excel to sum columns of data, whether your data is in an Excel table or is simply a range in a column of your worksheet.

Got numbers in a spreadsheet you want a quick calculation on without the hassle of going to a new cell and creating a SUM formula for the job? Excel offers a quicker way.

You can sum cells across multiple sheets in Excel. This article presents steps for Adding single-cell values or Adding values in the range of cells.

Mac: The "Sum" function in spreadsheets is great, but if you're not the type to do all your list-making in Excel, coder Brett Terpstra built an OS X System Service that allows you to total up any ...