For the Maths, you need to be quick and proficient at elementary mental arithmetic - adding, subtracting, multiplying, dividing - without a calculator - quickly and accurately.
You need to be able to re-arrange elementary algebra - ie, "make 'x' the subject of the following equation" when it is set out as 'y' = something.
And you need to understand sine, cosine, and tangent.
It really doesn't need to be any deeper than that. No calculus. No hyperbolic functions.
Physics is pretty much the same level. Ohm's Law. Kirchoff's Law. Wheatstone's Bridge. Basic Electricity, Heat, and Light. Elementary Work and Energy. Resolution of several forces pulling in different directions. The Gas Laws - relationship between pressure, volume, and temperature. Reading graphs. Interpolating between columns and rows from tabulated information.
That's about it.