Last year, however long it took to complete each homework. This year it's a little more because I have to self-teach Further Maths. I plan to usually do about 3 - 4 hours worth of further maths per week, adding homework on top of that... between 5 - 6 hours I would say. Not a great deal...
I only did whatever homework I had, but when it came close to exams it was whatever I needed to do to feel confident about it, even then it wasn't a huge amount of hours put into it
I remember being told we were supposed to do 5 for each subject at the beginning of year 12, but I don't think anyone really did that....well no one I know anyways
Ermm.. About an hour or two per week per subject outside of school? On average over the year I'd say.. Not at the moment as have Computing and Chemistry projects going on, which prolly puts it up to about 3-4 hours a week for them 2..
Maths is on the higher end.. About 2 hours a week maybe..
It depends on the subject, I do about one hour a week for Maths and only do more if there's something I don't understand. Probably spend about an hour a day on my other subjects.