## Formula in Excel 365

### How to avoid misleading numbers

Applying a number format to a cell doesn't change the value but only how the value appears in the worksheet. Formatting can play a joke with you, e.g., the sum of values seems incorrect because Excel displays a limited number of decimal places, and their sum is not equal to the real sum.

### How to insert functions into formulas

The easiest way to enter a function into a formula is to use the Excel program's

**Insert Function**dialog box.### Combining text and formatted values

The Excel

**TEXT**function enables you to specify numbers and date format.### Basic Formula operators

Excel formulas support many different operators.

**Operators**are symbols that indicate what mathematical or logical operation a formula should perform. The following are the most common operators used in Excel.### Using the formula bar as a calculator

If you simply need to perform a calculation, you can use the

**Formula**bar as a calculator.### Referencing cells outside the worksheet

Formulas can refer to cells in other worksheets-and the worksheets don't even have to be in the same
workbook. Excel uses a special type of notation to handle these types of references.

### Shortcut key to switch between relative, absolute and mixed references

You can enter nonrelative references (absolute or mixed) manually by inserting dollar signs in the appropriate positions, or you can use a handy shortcut -

**F4**key.