No, unless it is used as a compound adjective. For example,
Yes, "low-to-intermediate" should be hyphenated when used as a compound modifier before a noun.
No, the phrase "thank you note" is typically not hyphenated when used in a sentence.
No, "two thirds" should not be hyphenated. It is a compound adjective that functions as a single unit modifying a noun.
Yes, "hard worker" should be hyphenated when used as an adjective before a noun, as in "She is a hard-worker."
Yes. Compound adjectives are hyphenated in English (unless they are already percived as one word, like "lukewarm").
Yes, it should be hyphenated.
Yes it should be hyphenated.
Yes it should be hyphenated.
yes check-up should be hyphenated
It should be hyphenated.
"Field" is not hyphenated.
Yes it should be hyphenated.
Yes it should be hyphenated.
Yes it should be hyphenated.
No it shouldn't be hyphenated.
Self-made should be hyphenated.
No it shouldn't be hyphenated. It is one word.