Do custodian jobs use math

Answer 1

No, they have absolutely no need for mathematic knowledge. Could they use math to reduce the amount of work they needed to do or design the best way to do it? Sure, but they don't.

Yes. Indeed they do! For ten years I was a math teacher for a community college. I taught convicts at a med/max prison in Southern Illinois how to get a job as a custodian. I taught my convict students basic math, business math, geometry, algebra, and the metric system.