There's 2 levels of Maths. Either advanced or intermediate. Advanced being Math1901 and Math1902 and intermediate being Math1001, 1002 equivalent. They are both worth 3 credit points so in total, there's only 6 units of math involved. Btw, I do Mechanical (space) so this may vary from Aeronautical (space) but in terms of math units, it should be similar.