Unforseen, math test will test you on the basic geometry (triangles, S and V of the cones, prisms), unit conversions (the trickiest is to convert squares, for instance hectars to meters squared, meters squared to mm squared), percentages. I’d recommend to go trough these formulas, make sure you understand area conversions and skill percentages. You are allowed to use a calculator, however, bear in mind that the time is pretty limited.