Why i only have 5 compositions on motion 5?
I only have 5 compositions on my motion 5 app.. isn't it supposed to be 8?
MacBook Air, iOS 8.1.3
Yes. The additional compositions are provided in a separate download.
It's offered within the app (if you haven't installed it already) under the Motion Menu as "Download Additional Content". It should launch the AppStore and be visible in the Updates page.
If it's not showing up you, you can also get it here: