Way back in the day, the Business Mathematics DSST was considered a pushover. If you had even a basic grasp of mathematics (that was me), you could pass the exam. Unfortunately, those days are over. In April 2009, Prometric refreshed the exam and significantly increased its difficulty. It now includes topics such as Algebra, Statistics, Annuities, Taxes, Interest, and several other subjects that you'll need to study before attempting it. The exam doesn't go too deep into any of those, but you will need to have at least a basic grasp on them all and how they apply to business. If you're familiar and comfortable with things like stock distributions, depreciation, and similar applications of business mathematics, you're well on your way to acing this exam. As an aside, I'm not thrilled with the formatting on these lessons. I'm going to make the study guide live so that you can study, but when I get around to doing the final QA, I'll likely make some changes to make it more reader-friendly. In the meantime, please be assured that it's on the list of things to do.