I just purchased Starfinder and googled my way into this thread looking for an answer to wth "1-1/2" means. Now I know it means 1.5 (or 1,5 as we write it down in here).
The reason I'm commenting is I actually figured out that it must be "one and a half" in my head, but had to look up to be sure about this. Since it certainly isn't the most logical way of expressing it. And for ppl who claim that it is or should be clear to everyone: it sure is the first time I ever laid my eyes on such expression. Must be 'cause I hail from Finland, Europe.
Anyways good RP sessions to everyone and thanks for clearing this out!