To uninstall an app purchased or otherwise installed from the App Store, simply do the following:
- Hold your finger on any icon on your iPad until all icons begin to wiggle (the same action you take to move or re-arrange icons).
- Click the "X" in the upper left hand corner of the icon for the app you wish to remove.
- When prompted, touch Delete.
- To prevent the app from re-syncing to your device, plug the iPad into your computer. Under the iPad, iPhone and iPod touch > Apps tab in iTunes, de-select the app from the Sync Apps list.
If you have deleted the app from your computer, and you want to re-install the application at a later time, simply visit the App Store and select the app again.