Common formulas An Excel formula always begins with an equal sign (=). Create a formula by combining numbers, cell references, arithmetic operators, and/or functions. Click the mouse to continue.
Calculate the amount of time between two dates Subtract the two dates Click the mouse to continue.
Keep a running total To keep a running total of cells A1 through A6 in column B, enter the formula shown with the SUM function and absolute cell references Click the mouse to continue.
Keep a running total Copy the formula from cell B1 to cells B2 through B6. Click the mouse to continue.
Join first and last names To show the full name, use a formula in this format: =B2&” “&A2 To show the last name, first name format: =A2&”, “&B2 Click the mouse to continue.
Increase a number by a percentage To increase the cash balance amount in this worksheet by 10%, enter this formula Click the mouse to continue.