Look Logically at answers , such as half life and Half value layers should be able to eyeball them and know where the answer is. Also random guess after you throw out answers you know are wrong. IF C is your emergency choice and its a halflife question and the answer goes up in value you better not pick that one, but try something else. Unless u are trying to back calculate to a value. but a present or future value should always go down. Take Friday off and take it easy and go through your prep disk some more, it helped me. Start on prep disk now start from question one, only write down questions you dont know or have trouble with, then study them Friday. cross off the ones you get, until you just have a few left, dont dwell on the math ones now, its too late, if you have them fine if not, do the ones you can memorize like radiation area, Yellow 2, 3 etc. Taking tests on the disk is a waste now in my opinion. You are doing ones you already know. Start from one and go through the whole thing at least three times this week then maybe have just a few that U have trouble with, just write them off if math. I did that for my CHP part 1 and passed, I was dumber but passed my NRRPT first time I wasted alot of time taking the tests. Instead of going from question 1.