Is there anywhere online I can find worked solutions for math methods 3/4 Cambridge workbook? I went to

http://www.cambridge.edu.au/senior maths and made account/actived my code. I could find solutions, but only the same ones I would find at the back of my book. Not ones that show any steps/working, which I need since it's not always easy understanding how 2*2 gives an answer of 4. Also my teacher is getting annoyed answering all my questions and will sometimes say "work it out on your own", even if I've already spent half an hour trying.