I'm an senior math major in undergraduate planning on applying to around a dozen school's PhD programs in math. I think the rest of my application (grades, advanced classes, research experience, letters of recommendation, general GRE scores) is fine, but I am concerned somewhat with my subject test scores. Due to financial and time constraints, I was only able to take the test once, and I got a score in the 31st percentile.
Is this something that's worth mentioning in my letters of intent? Specifically, I was thinking of mentioning that when I took the MFT (major field test) in mathematics as part of the capstone course at my university, I scored in the 96th percentile, so it's not that I'm bad at university mathematics, I just had test anxiety concerning the subject test.
Also, for what it's worth, I thought the MFT was similar in content to the math subject test, but not as difficult.
Another option might be just to mention the high MFT scores on my CV that I send in with my applications, leaving out any mention of that in my letters of intent, and just hoping that helps my case with the admissions committees.