Download this free app.
https://itunes.apple.com/za/app/find-my-iphone/id376101648?mt=8
Then go to settings, iCloud and switch on ; find my ipad
Most importantly what happens when it's lost.
Go onto another iOS device, open the app above and sign in with your apple ID. It will show you on a map where your device is. Just as long as its "on" in your iCloud setting.
