How many Subject tests do most colleges recommend?

I was planning on taking only two subject tests, Chemistry and Math 2, but now I only want to take math 2 due to my busy schedule. Are both subject tests important, or will I be fine with just taking math 2?

The majority of schools that require SAT subject tests require at least 2. Some schools only recommend SAT subject tests, or state that they consider results if submitted; for those schools, one test is probably fine.