Calculators, when I took the test, we weren't even allowed to take off our shoes so we could use our toes.......
For many, it has been a long time since taking a formalized test.
While taking the test, I recommend going through the test and answering the questions you immediately know the answer to. For those that you need to come back to, put a check mark or something you will recognize as needing more thought and move on. When you get to the end of the test, go back to the beginning. Surprisingly, you may find that the answer you are seeking has been "refreshed" by another question, or you will be more used to the types of questions and the second go will be easier. As you answer the questions you skipped, if using a "check mark" the first time, make it an "x" so you know you have answered the question and go through to the end. Repeat until you get to questions you just can't answer. Then go by process of elimination. Out of 4 possible answers, eliminate the ones you know are not correct and focus on the remaining answer to choose the best possible answer.
Remember to ask yourself, what is the answer the CPF committee may be looking for, not necessarily the one you personally feel is correct......it is their football
Also, read the questions carefully. Are dimensions frame ID or OD? If a photo is involved and the dimensions are 8 x 10, when calculating mat dimensions in determining frame size, remember that "overlap" may be required to determine frame size.
Remember the formula to determine how many feet of moulding are required to build a frame. For a rectangle, it is (2xL + 2xW + (8 x width of moulding)) divided by 12
Breathe! The test is not a race to see who finished first and there is no shame using as much time as necessary to complete the test to the best of your ability. Do NOT be intimidated by others who may finish before you.