How to uninstall my app on my iPhone?

I was supposed to update my apps on my iPhone and they have been on "waiting" since yesterday and i can't delete them its two of them. I tried everything i even deleted alot of my pictures because i thought it might have been the memory but it wasn't.

That happened to me alot in the past! They used to stay on my screen but eventually they would get deleted by them self. The longest they have stayed on my screen was two days. Try resetting your iphones homescreen to factory layout. Its under settings.

Try Doing A Hard Reset By Holding Down The Home And Power Button At The Same Time Until The Phone Fully Reboots Past The Apple Logo.
In Your Multitasking Menu (Double Tap Home) To Close All Open Applications.
Next, On The Apps That Were Waiting - Tap Them Again To See If They Restart Loading
You Should Be Able To Delete Apps That Are Updating, If They Are Stuck By Holding The App Down Until It Shakes And Hitting The X To Delete It (iOS 4.3 And Higher)
[YOU WILL LOSE APP DATA BY DOING THIS],

If You Do Not Wish To Delete It - Please Read On.

If Hard Resetting The Phone Did Not Work, And You Don't Wish To Delete The App (In Fear Of Losing The App's Data) Go To General > iTunes And App Stores > Tap On Your ID And Sign Out
Restart The Phone, Sign Back Into The Store And Retry

Hope This Helps!