1. You can swipe over to the desired page, open up your app drawer, tap and hold the desired app and drag it into place on said screen.
2. You can open up your app drawer, tap and hold the desired app, and when you're back on your desktop (while still holding onto the icon) drag it to edge of the screen in the direction you want it to go. After a second of holding it on said edge, the screen will fip over to the next.