Increase value in group of cells

Good afternoon internova

...and welcome to the forum!!

Originally Posted by internova

Can someone tell me it is posible to increase cels value (diferent values) from D2 to D21 for example, by 20. I just start to use excel. Thank you.

Type 20 into an empty cell somewhere - anywhere will do and you can delete it after.
Right click the cell containing "20" and select copy
Highlight rows D2:D21, then right click the highlighted cells and click Paste Special
In the dialog box select add and click OK
Delete your "20".

HTH

DominicB