I have a Magic keyboard with the numeric keypad, how do i use it in bootcamp with windows 10?
I'm writing this with my new Magic Keyboard on my Windows 10 (64 bit) PC. I connected with a Logitech 'Dual Mode' Bluetooth V4/BLE dongle, which I installed first. Note I do not have bootcamp (I don't even know what that is/for)

There are a few differences to a normal windows keyboard:
- ALT key renamed 'option' 
- I have have to use the 'command' key for the Windows key 
- BACKSPACE is named Delete (there's a separate forward Delete key too)

Apart from these it seems completely normal so far, supporting all other keystrokes like F2, Control-Home, Conttrol-ALT-Delete (i.e. Control-option-Delete)

The only niggle = I can't tell the current charge level of the rechargeable battery. But even if the battery gets too low I can just plug in the USB-Lightning charge cable provided, and keep typing while it's charging.

All these minor shortcomings are well and truly outweighed by the appearance and feel of the beautfully styled keyboard

Hope this helps ...