I took the TEAS in January and the science part is all over the place so don't get discouraged if you don't do too well in it. Most of my questions were chemistry or geology....2 physiology questions and 2 microbiology questions. crazy huh? The last time I learned about geology, I was in Jr. High School. The only pointer I have for the science part is that if you don't know the answer, just pick the answer with a term most familiar to you. For example, for all the geology questions, not only did I not know the answer, 3 of my 4 options I had never even heard of the terms of so I just chose the one option that I had actually heard of. In case you were wondering, I got a 100% on the life science (aka geology) section of the TEAS. I couldn't believe it myself. Of course I don't swear by this method, but it worked for me.
As for the math section. I thought the math was easy...but they don't let you use a calculator. So there would be a lot of calculation for a single problem that you had to do by hand. For example (and of course this isn't the exact problem):
$2.25 - 8 inch bandage
$4.40 - 6 inch bandage
$3.50 - Clear tape
$1.75 - Blue tape
$8.00 - Foaming Soap
$3.35 - Water-free Soap
How much would it cost for 3 8-inch bandages, , 1 6-inch bandage, 2 rolls of blue tape, 1 role of clear tape, 6 bottles of foaming soap, and 4 bottles of water-free soap?
Of course that easy to do on a calculator, but a whole other story by hand. And your choices are very similar. Also not all of the math section is like this. There's fractions, percentages, metric conversions also that aren't so time consuming as this problem.
As far as the english and reading section, it's just like those standardized test you got in high school.
Hope this helps:D