The Hibees – who listed Polish right-back Filip Modelski as a trialist – struck first when he capitalised on a spilled Kane O’Conner cross to tap home.
Motherwell, however, equalised before half-time when Dylan Mackin headed past Hibs keeper Patrick Martin from a corner.
Hibs came out of the traps quickly in the second half and went ahead on 46 minutes. Paton was again the scorer, latching on to an Adam Watson cross to finish past PJ Morrison.
Grant Murray’s men then secured the win when Ben Stirling’s strike from outside the box nestled into the bottom corner to make it 3-1.
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How the Hearts players rated in the draw against Hibs
How the Hibs players rated in the derby draw with Hearts
Hibs development team: Martin, Modelski, O’Conner, Porteous, Waugh, Stirling, Watson, Crane, Paton, I Murray, F Murray. Subs: Donaldson, Gallantes, Hall.