No advice for the OP, but lots of sympathy.
Just last night DS9 (DYS/3rd grade) told me he is "no good at math" because he is having trouble with his division timed tests. This is a kid who's definitely more verbal, but did make the cuts for both math AND verbal for CTY classes, so I don't think he's bad at math. And it isn't uncommon for him to go through some mathy interest phase where he is in deep discussion with DH about some geometry, trig or other higher-level Math concept.
I quizzed him to see if it was a practice issue, and he does know the info (with the occasional error), but he said the timing makes him completely freak out. The teacher also uses a dangling carrot approach. DS said it's even worse because teacher posts scores in some way in the classroom, so he's embarassed that he's not completed as many as others. *sigh*
