When you work on a spreadsheet, it's important to save different versions so you can go back and look at previous versions if needed. Here's how to save versions in Excel:

1. Open the spreadsheet you want to save a version of.
2. Click File, then click Save As. This will open the Save As dialog box.
3. In the Save As dialog box, click the Save as type drop-down menu and select .xlsx. This will save the file as an Excel workbook.
4. Click the Save button. This will save the current version of the file.
5. Repeat steps 2-4 as needed to save additional versions of the file.

Note:

• You can also save versions of an Excel file by clicking File > Save As > Browse > (select a format from the dropdown list)

• File > Export > Create PDF/XPS Document > Create PDF/XPS