This question applies to iPhones and iPod touches as well. Read subject line. I find that I close(minimize, by pushing the home button) the app that I was in 90-95% of the time before I close the case(thus putting my iPad to sleep). I only keep the app open (displaying on the screen) if I am actively in the middle of something and want to make sure that I start back where I left off. But if you think about it there is no real reason to close(minimize) them before you sleep your iPad. You will still have the same number of steps wether u close(minimize) the app before putting to sleep or after resuming your iPad. In fact it could save time, because frequently I open the last app I was in anyways. Also on a laptop I never close(by minimizing or by clicking the red x) anything before I shut it... So why bother on an iPad? So what do you do? Do you leave the apps open or not? Edit: Ok, I didn't realize there would be so much confusion with my terminology. I changed it to more properly indentify my intentions... Who would be so OCD as to close out all of the icons in the multitasking tray anyway? and who would ever fully shut down their iPad?