Collocations for maths - noun

applied, pure
basic, elementary, simple
advanced, complicated
Working out the quantities of the ingredients involved some complicated maths.

college, high-school (both esp. AmE)
fifth-grade, etc. (in the US)
mental (esp. AmE)
I did some quick mental maths to work out the difference.

problem
The class was struggling to find the solution to a maths problem.

class (esp. AmE), lesson (esp. BrE)
exam, test