Formulas are created to give us the results from such things as adding the items we buy at the store, computing our taxes, computing our car’s miles per gallon, and so on. A formula in Excel is an expression that is computed, and the results are placed in the cell that contains the formula. You can enter your own formulas, or you can use one of Excel’s many built-in formulas. Excel’s built-in formulas are called functions .
Enter formulas into a cell or into the formula bar ...