Where are pages files stored after I export them to itunes?
This is a 2 step process:

1/ mark the files to transfer (Export) to iTunes while in Pages on the iPad,

2/ once the iPad is connected, transfer the files from the IPad to the Mac.

I fear you did not do step #2.

In Pages on the iPad, Export in .docx (or .pdf and .pages) format. This creates the file in the selected format and makes the file visible to the iTunes interface on the Mac.

When the iPad is then connected in iTunes, go to the Apps tab > File Sharing section at the very bottom and select the Pages app &amp; its documents. Select a filename or filenames from the list of files. Once selected, you must click the Save to... button to pull up a save dialog. You can then save wherever you like - local or external HD, networked NAS, webDAV server, USB key - whatever.

NOTE: There is no default automatic downloading mechanism - you must first select the destination and then initiate the file transfer(s). If you didn't manually download the files from the iPad, they won't be on your Mac.

To avoid this in the future, I suggest you save your documents using iCloud, for example, or into Dropbox, Google Drive, Evernote and other apps Pages can access in iOS, and which can be retrieved by OSX and Windows. This will guarantee that an important doc is available whenever needed. I use all these technologies on a mixed environment of iOS devices, Macs &amp; PCs.