If you want to install while offline:
First you need to locate the feed which you got you version of gnumeric from, because the correct dependencies will be on THAT feed.
Next, download the "Packages" file and open it in wordpad (windows) or open it in notepad and copy/paste to/from wordpad to format it so you can read it.
Next find the entry for gnumeric and all the dependencies will be listed.
Then you can download it all with a web browser on your desktop machine.
Note: gnumeric has a ton of dependencies.
Attached is a copy/paste from the Angstrom feed that I use.
Edit:
I forgot to mention, do NOT use the feed address listed in my attached text file, it's for 3000/31000/32000 Zaurii