It's very similar if not perfect, but after you have read the ENTIRE ATI book, done both quizzes in back as well as the questions scattered throughout the text, you should be able to pass. I bought the McGrawHill 5 Teas Test book and didn't use it at all D:
But if you want, use it! Practice practice practice! When is your test? I admit I couldn't sleep the night before, but refused to ever read the Science again (once was enough.. yeowch), so I simply practiced lots of math problems. Scored pretty nicely too!
Anything that you think may help - use it! As long as it is designed for TEAS V it can't hurt!
Wishing you the VERY best of luck! Deep breath and study hard - you got this.