## Excel 365

### Basic Formula operators

There are several operators that could be used in formulas.

### 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.### Copy formulas for selected cells fast and easy

You can use "Copy" (

**Ctrl+C**) and "Paste" (**Ctrl+V**) options, but there is a faster way to "copy" a formula to multiple adjacent cells.### How to insert fractions

This tip describes how to use fractions simply.

### How to change number format easily

A simply way to apply number formatting is to use shortcut keys.

This tip summarizes the shortcut-key combinations that you can use to apply common number formatting to the selected cells or range.

This tip summarizes the shortcut-key combinations that you can use to apply common number formatting to the selected cells or range.

### Insert current date and time quickly

If you need to date-stamp or time-stamp your worksheet, Excel provides two shortcut keys that do this for
you:

### Removing excess spaces and nonprinting characters

Often, data imported into an Excel worksheet contains excess spaces or strange (often unprintable)
characters. There are two handy functions

**TRIM**and**CLEAN**to cleanup such data.