Since these gaskets are new, assuming you didn't use any additional gasket sealer, if you can remove without separating layers and/or tearing them I would re-use. I wouldn't try that on a head gasket, but I would think you could get away with it on the intake and exhaust gaskets. Tim

PS: If you're removing any gaskets that are symmetrical, make sure to orient them exactly the same as before when reinstalling.