I accidentally deleted some pictures on my iPad how do I get them

Photos, when deleted, are initially moved to the Photos Recently Deleted folder - from which your deleted photos can be recovered.

With the Photos App open, ensure that the Photos sidebar is visible. If necessary, tap the blue sidebar button at top-left of the Photo App windows - to show or hide the sidebar.

Within the sidebar, you’ll see the Recently Deleted folder.

If you have deleted your photos from this folder, unless you have a backup elsewhere, photos are now gone.