I have a degree in Maths and have taught it for many years, but I still have a problem with > and < signs. I know what they are and understand what they mean, but my brain ‘flips’ inequalities even as I double check what I am doing.
Dyslexia can have a profound impact on maths attainment, especially with greater/less than, left/right, clockwise/anticlockwise situations and problems involving inverse operations; add/subtract, multiply/divide (which is pretty much everything). Also problems involving time.
It’s often wrongly diagnosed as dyscalculia in people who have a perfectly fine understanding of number, simply adding to their problems.