muddiest point

My muddiest point so far in this unit is completing the squares when it involves fractions. I feel as tho mason doesn't do a very good job teaching about fractions so when it comes time to using them in solving it really confuses me. I usually like to just be able to round the decimal places but you like exact numbers so i can't really do that so i guess I'm just going to have to get used to using fractions and improve on it.