Given we're going for a lightweight OS, I suspect lightweight applications are a good idea too.

I like the balance of Gnome Office: fully featured yet lightweight.

sudo apt-get install abiword gnumeric

This provides you with MS Office compatible Word Processing and Spreadsheet capabilities.

For more details, see their individual websites:

Obviously, if you want (and have the RAM to cope), I'd suggest getting OO.org3 as detailed by Tombuntu.

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