My ah ha moment was during the skill check. On number 3 in the last section I realized that I thought it was alot harder then it actually was. I also found out that when you do not have anything in the numerator in the fraction, you just put a one.
My ah ha moment was on the test on the bonus question. After I finished doing the question by writing out all the possibilities, I realized it would be way faster to just see what 270 was a multiple of instead of doing so much work.
My “ah ha” moment was with the division table. I didn’t understand how you decided what number to use but then I realized you go in order from least to greatest prime factors.