Old photos re-appear in camera app.help!

Hello i have a smasung galaxy tablet and i have an issue. I have been using the tablet for personal use for awhile, but now would like to use it for school purposes. I decided to delete all the photos awhile back, now there showing up again. There not in any folder and just have a date stamp on them. I cannot delete them and im stuck. Help -natalia

 

How may i clear the cloud then? I really would like them to go away