I've been gathering a lot of tips from this site so I wanted to share one of my own! It may have been shared before but I have found it extremely helpful!
If you go to YouTube and type in Keshwani Prep there is a tutor that does tons of videos on all sorts of math from various exams. He has a whole playlist of the TEAS math from the ATI book and breaks everything down step-by-step...and he also gives a lot of hints/shortcuts!
I have only gone through 28 of the 80 videos and just scored an 82% on my practice exam in the math section. I'm someone who always struggles with math and scored a C in Algebra (I'll be taking it over this summer).
Good luck! Check out these videos, especially if math is not one of your strengths!