Free Bingo Board Template

Make sure to include the dollar signs. This makes sure that when you copy and paste, it will still reference B4.
Our last step is to print or export to PDF (make sure you only do one sheet/page).

Once this has been done, you can press the F9 key to generate a new random sheet.

Here is a link to the file on Google Docs if you would like to see how it works.
Here is a link to the original Libreoffice file.