how can i get a full mark in intermediate accounting exam? how to solve fast in the exam ?

i want to study smart not study hard.. because i always study for accounting then get bad grades because i would focus on minor things and forget the main points ! and i always have no time to solve ! im vey slow at it … so any A student there can tell me how to get a full mark? even if ur not A student i wanna learn from ur mistakes and the right things u did to get a good grade please help