How did you uninstall? Sometimes there are several things that also need to get deleted in addition to the application itself in order to get a true fresh start.
I'd follow the directions here:
Among other things, buried in there, it tells you to delete this: ~/Library/Container/com.apple.iWork.Numbers
Make sure to restart the computer afterwards.
And then download Numbers again from the App Store.
Let us know if this doesn't help. There are other things to try. Good luck.