Google has announced that their desktop documents editor is compatible with the iPad.
The new mobile editor is fast and lightweight, but sometimes you want to make more style edits like changing a font, or center aligning a paragraph. If you’re on an iPad, you can do that by visiting the Desktop version of the document editor.
If you want to insert formulas in a Google spreadsheet from your iPad, you can use the same trick. Just click Go to spreadsheet view at the top of the mobile view to try out the full version of Google spreadsheets. You can now insert formulas in from the editable formula bar.
Read more via googledoc.