Every Excel expert knows how to navigate without a mouse and how to format data using keyboard shortcuts. But do you know how to insert a sum without typing the formula? Have you struggled to ...

Although not required for basic addition, Excel has the SUM function, which can simplify adding large ranges of numbers.

However, adding that sum is not the only function Excel ... unfamiliar with inputting formulas into Microsoft Excel, the much simpler way to get the number of unique values in an Excel column ...