ipad

What do you mean by you removed your iPad from your iPhone? If you are trying to locate a device and it is assigned to your Apple ID, you can try and track and locate it with "Find My" and if it is powered on and has connection to Internet it will give you a location of where it is and give you options to help locate it once in the area. It will also give you the ability to lock or wipe it if it has been stolen and you want to clear your data from it.

What do you mean you removed your iPad from your iPhone? If you mean you removed your iPad from Find My iPhone, there is no way to track it except the old fashioned look for it physically.