GCSE Triple Science - 7/10 (for GCSE students aged 15-16) - just remember the concepts and apply to scenarios.
GCSE Maths - 6/10 - (for GCSE students aged 15-16) - just remember the formulas and use it to work out things.
GCSE Economics - 5/10 - (For A-Level students) - If you know the details, structure your answer well, then it's simple stuff really.
Haven't done English Language, Literature and Government politics, so don't know about those three.
Well clearly if you sit GCSE exams at A-level, they should be very simple indeed, like imagine doing SATS in GCSE.