Press and hold Alt and then F4.
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Excel 2007 does use the .xlsx extension for its workbooks.
xlsx is the main extension used for Excel 2007.
In Excel 2003 there are 256 columns. In Excel 2007 there are 16384 columns.In Excel 2003 there are 256 columns. In Excel 2007 there are 16384 columns.In Excel 2003 there are 256 columns. In Excel 2007 there are 16384 columns.In Excel 2003 there are 256 columns. In Excel 2007 there are 16384 columns.In Excel 2003 there are 256 columns. In Excel 2007 there are 16384 columns.In Excel 2003 there are 256 columns. In Excel 2007 there are 16384 columns.In Excel 2003 there are 256 columns. In Excel 2007 there are 16384 columns.In Excel 2003 there are 256 columns. In Excel 2007 there are 16384 columns.In Excel 2003 there are 256 columns. In Excel 2007 there are 16384 columns.In Excel 2003 there are 256 columns. In Excel 2007 there are 16384 columns.In Excel 2003 there are 256 columns. In Excel 2007 there are 16384 columns.
You can use all typefaces available in your computer. See related links for the typefaces that come with Office 2007 (and available to Excel 2007).
You will close all windows related to that particular copy of Excel. You can open several instances of Excel. When you quit one, you do not affect the other sessions that are open.
The standard extension for Excel workbooks is xls for versions up to 2003. Excel 2007 uses xlsx as its extension for workbooks.
xls comes from an Excel Spreadsheet. It is from versions of Excel up to Excel 2003. From version 2007, xlsx has been used.
Not necessarily. Having a good understanding of Excel 2003 will help in using Excel 2007. The main difference is the look, but the fundamentals are the same as it is still a spreadsheet, so it has to be able to do things that spreadsheets do, like with the formulas and functions. As those things are much the same, then you could use Excel 2007 without having ever used Excel 2003. Users of Excel 2003 would find Excel 2007 a little strange at first because of how different it looks, although they would quickly get used to it. Someone who has never used Excel 2003 won't have that problem.
You can open a 2007 Excel spreadsheet with Excel 2003 if you save the file in Excel 2007 using "Save As" and select the 2003 compatibility mode.
The differences between them are not extensive so you can work in Excel 2010 easily if you are familiar with Excel 2007. You can save your files so that Excel 2007 will recognise them.