[Question] Is the Praxis Reading exam scaled or does it add "points" to the overall score?

Hello,

I just need some clarification. After I take a practice exam it tells me my score and then tells me how many "points" I earned. Do these points get added to that score or are they just for a fun thing for the website? I just want to make sure I am gauging accurately in preparation for the actual exam. I had originally received a 160, took the test and got a 156 which isn't too far off. I have taken two more practice exams and received a 168 and a 178 with similar amounts of wrong problems answered and just want to make sure that the practice exams are scaled like the actual test is and not accounting for these "points". 

Thanks!