I went on a brush-up maths course before I started my ATPLs. We did:
Basic algebra: learning how to transpose equations.
Basic Trig: Pythagoras, and Cos/Sine/Tan for calculations, circles
All all cases I practised using the equations from the ATPLs.
I didn't do any Physics brush up, but I did purchase a basic GCSE book for Physics which comes in handy here and there for some extra reading when I want a different perspective on something.