I think in maths, doing many will help but useless if you don't know the concepts.
and u said that "但點解我永遠低分過抄功課、唔做功課既同學"
I would like to tell you that 抄功課、唔做功課既 =/= weak in maths
since as i have said, doing a lot will help only if you know the idea
maths is a kind of science, if u don't know wt it is talking about, you won't get good grade even you have done a lot
