You can buy a study guide with practice tests.
Amazon is your friend.
Got one for my son and he pounded it for a couple of days. Needed to brush up on his algebra skills mainly.
Scored 97, 95, 95, 94. Smart kid.
ASVAB Prep Plus 2020-2021: 6 Practice Tests + Proven Strategies + Online + Video (Kaplan Test Prep) https://www.amazon.com/dp/1506250653/ref=cm_sw_r_cp_apip_tki6hlbyKCf1U
Well there are two types of ASVAB tests at MEPS (where you go for medical evaluation and to test before you choose your AFSC). They are both timed, obviously, but there are a few major differences.
There is the CAT ASVAB, (the one I took) that you take on the computer. You have fewer questions, more time for each question, AND the more questions you get right the questions become more difficult. Then the difficulty is set after you answered a few questions. Answering harder questions correctly increases your score so dont play dumb and get a bunch wrong to have easier questions. Your score will drop. Also you cannot go back to answer unanswered questions you may have skipped.
The paper and pencil ASVAB has more questions with less time to answer each question, and since they are on paper the difficulty dosn't fluctuate. Unlike the CAT, with the paper and pencil ASVAB you can go back to answer questions you skipped or may have gotten wrong.
I hope this helped and please respond if it did.
Here is the book I bought to study for the ASVAB. I wanted a highly coveted job so I made sure my score was good (93). Hope this helps!
https://www.amazon.com/dp/1506250653/ref=cm_sw_r_cp_apap_on7TgrMboOysQ
This asvab test prep book was very helpful for me! It comes with a crap ton of perforated flash cards to break off and a few comprehensive practice tests. It teaches the material in a very straightforward way. Notably, on the math sections the questions were a bit difficult but being able to look at the explanations in the back for all the ones missed was extremely helpful and made the ones on the actual test seem easy by comparison. It wasn't my only source of studying, but it was for sure my main one and helped me get a great score when I took the asvab this past summer!
Kaplan's ASVAB Prep is the best bang for your buck in my opinion. $20 will get you everything you need.
https://www.amazon.com/dp/1506250653/ref=cm_sw_r_cp_apa_fabc_ePzXFbGG98JQ1
It's a good resource!
I recommend Kaplans Test Prep! $20 on Amazon and it comes with a ton of content like flash cards, multiple practice tests, etc.
https://www.amazon.com/dp/1506250653/ref=cm_sw_r_cp_apa_i_.2dMFbWGTYKFG