Is 3.10 a benchmark fraction

Answer 1

I'm guessing this is about mathematics education.

Not sure whether you meant to write three-point-one-zero, or three-over-ten.

If you meant three-point-one-zero, then I'd say no. Three and ten hundredths is no benchmark I've heard of.

If you meant three-over-ten, then I'd say perhaps. A tenth is a very useful benchmark, so knowing three-tenths is kind of useful but only if you understand tenths generally.

It's a bit of an odd question really.