If you have more than one spreadsheet saved on your iPad, iPhone, or iPod touch, you can access them in the spreadsheet manager. You can sort them alphabetically or by when the spreadsheet was last edited. You can also search for spreadsheets by name.
In the spreadsheet manager, pull down to show the Date and Name buttons, then tap one.
In the spreadsheet manager, scroll down to show the search field. Tap it, then enter the name of a spreadsheet.