supermum2 wrote:

I then looked at this site where parents are discussing equations, algebra and long division etc. I am very keen to know if these more difficult subjects have come up in any of the Surrey exams in previous years.

Just to say if you found this in the maths section, these questions arent all related to 11+. Some will be for entrance exams to independent schools. If you look at the NFER practice papers it gives you a good guide of what to cover or Bond how to do maths 11+

I am not from your area but generally there is normally one question that require algebra and sometimes it isnt straightfroward algebra more like "I think of a number add 7 and the answer is 13" I have not seen any question in the 11+ where a child needs long division, most can be done by short division...if you are tight on time these are the areas you may work on in the last days when your DC has mastered most of the stuff and I wouldnt worry too much about it.

I am not too sure whats covered in KS2 but some of the maths topics may get covered in Year 6 for example my DD only did ratios at school recently and it was very basic more like an introduction yet there are one or 2 questions on ratios in the practice papers. I hope someone in your neck of woods can give you more specifics but the maths paper seem fairly standard across the board. My DD actually did some mocks in Surrey even though we are in Kent so I doubt there is much difference in the content.