Google Drive is Google's file sync app that lets you store all of your files online alongside your Google Docs documents, and keep them synced with all of your devices.
Record question scores and hold uncertain totals for review.
See question scores in your gradebook, with an email pointing out blanks and uncertain marks that still need your decision.
Record question-level results and flag answer sheets for review.
Your exam scores and question results go into one spreadsheet, while unclear scans wait for your review.