Hi Spencer0002.
None of the so called "pure math" DS questions appear on the Focus Edition. The new DS questions are all word problems.
So, anything that works in a word problem, such as rates, percentages, mixtures, overlapping sets, and maximums and minimums, is fair game.
Also, the questions can sometimes involve information in a chart or table.
Finally, some do not involve math and instead involve verbal logic similar to what you'd see in a Critical Reasoning or Two-Part Analysis question.
So, you can use any word-problem-type DS question you see in the materials you have, and at the same time, it also would be good to find a source of verbal-based DS questions to learn how to handle those.