Save As
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A spreadsheet that you create and save with Excel is an example of a file.
If you don't save it you will lose all your work.
Yes you can. You can use the Save As to do this. It gives you lots of different file types that you can save your spreadsheet as.
you should save it
Use Save As instead of Save to save a spreadsheet as an HTML table. While the user will be able to view the spreadsheet in a browser, they will not be able to manipulate the contents.
Generally it would still be called a spreadsheet, but it could be called a What-if spreadsheet.
SAVE YOUR WORK FREQUENTLY
If you don't save it you will lose all your work.
LOTS! if you use excel properly, it will save you hours of calculating by hand...
Electronic spread sheets can easily be modified and/or deleted. A hard copy spreadsheet not so. But if you regularly save your work as you are using the spreadsheet you should not have any problems. There is a way to setup Excel to auto save every few minutes.