Open office download

I have been working with the spread sheet in Zorin and having some problems with it
have used open office on windows and it does what i want it to , have tried libreoffice on windows and its making the same mistakes as on zorin
and i would like to try open office on zorin before i make up my mnd to move back to windows 7
what is happening iam trying to load a sheet from work and the equations are wrong but when i load same sheet into openoffice on windows that are correct
can any one point me in right direction for a download and easy install

Here's a link to Open Office Forum : http://forum.openoffice.org/en/forum/index.php

This can be a start til one of the others can get to ya !!!