decimal format

what decimal format should i use for the exam? should it be the same throughout or should it change in different circumstances? right now i have it out 5 places and mentally round to 4 for my answers.

Level II had questions requiring 5 decimal places in the answer, but I haven’t seen any question in Level III to require 5 decimal places. Hence, I think 4 decimal places will be enough for Level III.

I left my calculator at the max # of decimals (9?)

looked at the answer choice presented and then selected the rounding manually. … (instead of having my calculator changed for every question - which is really painful)