Q: Automator? Might save my life!

well, this can be done in applescript t least partway (I am not aware of any automator actions having been made for iWork). Can't really do it in the abstract, though.  in principle, you'll need to specify the range of numbers you want to process, run whatever calculations you want to run, save the result to a text file, and then send it through cupsfilter to generate a pdf.  skeleton looks something like the following:

tell application "Numbers"

          tell document 1

                    tell sheet 1

                              tell table 1

  --select the data you want to process and process it

                              end tell

                    end tell

          end tell

end tell

tell application "Pages"

  --insert data as appropriate, and save as a text file in variable filePath

  --might be easier to do this without pages if it's just a simply lightly formatted list of numbers

end tell

do shell script "cupsfilter " & filePath

but I can't really be more specific unless you are.