How do i get my numbers spreadsheets back onto my iPad (no iMac)

I recently updated to the latest iOS (7.0.4) and now my numbers app is empty!

I can see the spreadsheets in the iCloud (using iTunes on my PC), but there doesn't seem to be a way to download them without restoring the whole backup.

(it would be nice to be able to drag & drop as i'm used to with my PC...)

Any help would be much appreciated.