I have never done any of these things since required to peddle them about in an exam in 1973:
calculating the sine and cosine of anything
using a slide rule and log tables (kids, these were not made of real logs)
calculating the semiinterquartle range, quartile range, median and mode of anything
calculating how hard something will hit the ground using and equation
worked out how many electrons skid about in a chemical reaction
written about Keats' use of metaphors
analysed the clauses in a sentence
conjugated a verb in french, german or latin
recited from memory the terms of the Seditious Purposes Act
To name a few
But I regularly use tailor tacks
make potato soup wash hairbrushes and combs
and clen my teeth (but wasn't taught at school)