Do subscores add up?

<p>Alright my question concerns the ACT subscores under each section (English, Reading, etc.). Are those subscores supposed to add up to you score for the section (i.e. 2 18's on the math section = 36 or a 17 and an 18 on a reading = 35). Is that how it is supposed to work or are there curves/scales/other factors determining whether a 18+18 subscore section = lets say a 35 instead of a 36? (sorry may sound a little confusing)</p>

<p>I don't know the relationship between subscores and totals, but the ACT scores for each subject are weighted.</p>

<p>sub scores may not add up.</p>