Adding an equal sign (=) in Excel is a simple task that can be accomplished in a few different ways. The most common way is to simply type the equal sign into the cell where you want it. Another way is to use the keyboard shortcut, which is to press the Alt key and then the equals sign key on the numeric keypad. You can also find the equal sign in the Symbols menu under the Insert tab.
Once you have inserted the equal sign into your spreadsheet, you can then use it to perform mathematical operations. For example, if you type "=5+5" into a cell, Excel will automatically calculate the answer and display it as "10".
You can also use the equal sign to create formulas. A formula is a set of instructions that tells Excel how to calculate a value based on other values in your spreadsheet. For example, you could use a formula to calculate the sum of a range of cells, or to find the average of a range of cells. To create a formula, simply type an equal sign followed by the cell addresses of the cells you want to include in the calculation. For example, "=A1+A2+A3" would add together the contents of cells A1, A2 and A3. Once you have typed in your formula, press Enter and Excel will calculate the result.
You can also use the equal sign to create named ranges. A named range is a group of cells that have been given a name so that they can be easily referenced in formulas. To create a named range, select the cells you want to include in the range and then click Formulas > Name Manager. In the Name Manager dialog box, click New and then type in a name for your range. Once you have created your named range, you can then use it in formulas by typing its name instead of its cell address.