For your office needs, Xubuntu comes with Abiword, a lightweight word processor, which can read almost all known document formats and Gnumeric, a spreadsheet program with an emphasis on accuracy.
LibreOffice is also available in the repositories, if you're more comfortable with it or need a full office suite.
¿Ónde?
»
Oficina »
Abiword
»
Oficina »
Gnumeric