Math classes
Way back when, we learned "arithmetic" in grades 1-6 (no kindergarden then, either), and then we got to be "big kids" and could take "math" in grades 7-12.
I went back to our local community college when I was "mature" - I was a peer tutor - and when I was tutoring someone at a "lower level" - I learned that the method that I knew of how to solve a problem did not match the method that he was learning.
So I asked the instructors if I could sit in on those classes. WOW! I learned SOOO MUCH in them - it was either never taught way back when - or I was absent those days - which were many.
Math really is useful -
Hardly anyone will admit to being illiterate when it comes to reading - even though a lot of people are.
It seems odd that some people almost brag about being functionally illiterate in basic arithmetic/math.
Or - I don't need to know anything about it - I have a calculator to do the work.
It's still helpful to know WHICH buttons to press to get an answer that makes sense!