Um, you know all of those were developed before calculators, right?
I learned both trig and calc on the principles in how they were derived, so yes, when I was learning and using them, I could do some of it in my head or with a few figures on paper.
But I never said "similar" at all, I was using them as comparable subjects that could be done by hand or with aid.
You're so obsessed with calling out someone on not mentioning fractions you've missed the point of the test, article, and this thread. They use fractions because it was above simple math but not so high level that some of the random people picked might not know it. Which going back to the real discussion, having randoms whose skill isn't known even halfway through the test might have been a flaw in the test.