Pages Document created on Macbook Air cannot be opened on Ipad Mini. I get a message that reads, "only documents saved in pages '09 may be opened." These devices are one week old and I just downloaded Pages for each.
You are aware that Pages for Mac and Pages for iPad /iPhone/iPod are 2 different program?
Looks like you have Pages for Apple mobile devices but not for your Mac.
If that's the case
Pages for Mac: https://itunes.apple.com/au/app/pages/id409201541?mt=12
Pages for iPad/iPhone/iPod touch: https://itunes.apple.com/au/app/pages/id361309726?mt=8