Adding a new column to either an entire spreadsheet or just a portion is an easy thing to do in Microsoft Excel. Here's how.

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

Learn Excel 365 calculated columns to enhance your data analysis skills with dynamic formulas, cross-table calculations for real-time insight ...

Learn how to multiply numbers in single cell, multiply multiple numbers from several cells, multiply column of numbers in Excel.

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