and for each subject area
4 worked examples at A and A* with a calculator
4 worked examples at B and C with a calculator
4 worked examples at D and E with a calculator
4 worked examples at F and G with a calculator
4 worked examples at A and A* without calculator
4 worked examples at B and C without calculator
4 worked examples at D and E without calculator
4 worked examples at F and G without calculator
