Press Shift-F11 or right-click on any sheet name and choose insert.
Click on the new sheet and drag it to the end...

If you are using Excel 2007 then press the 'Insert Worksheet' button to the
right of the last sheet name.

"Frank Driscoll" wrote:

I have a workbook with 4 spreadsheets. I would like to add a worksheet at the
end of the workbook.