Could you have your iPad screens full (you only get 11 pages)? If your pages are full, the icons/apps will be on the iPad, they just won't display.
Did you try to find them on the iPad using the Spotlight feature; do they show? Could you have them on another page (even in a folder) that you miss when you look through them?
If they show as installed (and show up in the Spotlight), then they are on the iPad. You'll have to keep searching...
Good luck and do holler back if they don't appear in Spotlight.
Marilyn