Use this drill frequently to keep you practiced at your calculations. I will add to them weekly so that there are plenty of questions to work. If you have not learned how to do a calculation yet, just skip it and ask about it when you get a chance. Remember doing them frequently will make your journeyman's test a breeze because you will remember the steps and just knock out your calculations.
Each time you do the drill it will randomize questions and pull in new ones.
Doing this drill every other week is an expectation for all Junior and Senior apprentices until you successfully pass you journeyman electricians license.