g502

Hi, i currently have a wireless mouse, a G502 from Logitech. I've just bought a Logitech wireless keyboard, a K350 wave. Should i be able to use the wireless widget/dongle thing from the mouse with the keyboard? I think the mouse is newer than the keyboard (obvs newer to me, i think...

My mouse doesn't glide like it used to, can you replace the pads ok on bottom of mouse?