The Gregg Reference Manual uses this:
mid- to late 60s (with a single space after the hyphen, because "mid" is a prefix that requires a hyphen).
My question is, if you have a phrase like "low to mid-50s," do we write it as I have done (i.e., no hyphen after "low," because "low" is not a prefix)?
CORRECT: low to mid-50s INCORRECT: low-to-mid 50s
The only time we'd use two hyphens in "low-to-mid 50s" is when it's used as a compound modifier, correct? See below.
CORRECT: Temperatures are expected in the low-to-mid-50s range.
Correct with all examples (and reasoning)?