How to transfer a garageband file from Mac to iPad?

Recorded some tracks on Garageband on the Mac; and want to transfer the file to my iOS device.

Tried emailing a .band file and an .mp3 ; but neither would open up in Garageband on the iPad.

Even put the file onto iTunes on the mac and synced to itunes on the iPad; but still can't figure out how to even open an mp3 file ; nevermind a band file on iOS Garageband

Any help appreciated

Thanks;-)