Was the calculus Newton and Leibniz were doing different from the calculus that we do?

A bit of a strange question, but i noticed that he did a lot of calculus from more of a geometry point of view right?

if we gave newton a calculus test that undergrads in, let’s say, calc 1 take - what is a likely score that he’d get on said quiz? Riemann sums didn’t exist in the way we know it today, so how would he view integration problems?