Downloading ?

I'm not very computer literate so bare with me, but I am currently in school and my teacher sends assignments to me using Powerpoint, Excel and Word, so will I be able to open them just using Open Office?
User community support forum for Apache OpenOffice, LibreOffice and all the OpenOffice.org derivatives
https://forum.openoffice.org/en/forum/
https://forum.openoffice.org/en/forum/viewtopic.php?f=49&t=8857