High school algebra should be adequate. You have to be able to calculate areas of circles, squares, and rectangles. You have to be able to calculate heat input, elongation, reduction in area, and convert U.S. customary units (inches, pounds, psi, etc) to metric and vice versa. There are enough math questions to fail the examination if you are weak in that subject.
A = ? X r2
A = ? X d/4
Heat Input = Q= (I X E X 60)/TS
Elongation = (Lf – Lo)/Lo X 100%
25.4 mm = 1 inch
(notice the subscripts and pi don't print in this format)
There will not be enough time at the AWS seminar to learn algebra and the course is not intended to teach math skills. If you are a bit “rusty” with high school algebra, I suggest you take a class at your local high school or community college. Many communities offer courses for a small fee. If your high school doesn’t offer a class, check with other communities in your area. I know our local high school doesn’t offer evening adult classes, but our neighboring town does.
I studied for several months before I took the AWS CWI examination. I purchased the books before the seminar and read each one cover to cover and did all the problems in the workbooks. The effort was worthwhile. I passed on the first try. That being said, I had an advantage over many people taking the examination. I had been welding for several years as an Ironworker and I completed a few years of college (engineering technology) before taking the examination. Math, the subject many people struggle with, was not a problem. Likewise, questions about the welding processes were not a problem because I had experience with many of the processes. I was familiar with their operating principles and the welding defects each welding process was prone to produce.
Good luck on the examination. It will be worth the time and effort you put into studying. The CWI credentials change my life. As they say, the CWI is the beginning of your education and the CWI seminar is the first of many. I’ve been going to “school” ever since.
Best regards - Al