There is much more to intelligence than math ability.
I know some brilliant people that have no clue about mathematics. Never base an estimate of intelligence solely on math ability. (Carter was a nuclear engineer)
That said, Obama is an idiot.
Almost anybody can learn math if they need or want to. Really great books/teachers can make it easy.
Bar none the best Calculus text is “Calculus Made Easy” by Thompson and Gardner. published in 1910
Math is a subject where your ability to advance depends entirely on how well you understand your fundamentals. You cannot just jump in the deep end and expect to swim. You start at the very beginning and work step by step.
Arithmetic
Algebra
Geometry
Trig
Calculus
and on and on.
Okay, Pres. Transparent, unseal your records.
Carter was NOT a nuclear engineer. http://seekerblog.com/2009/08/27/resume-inflation-how-a-peanut-farmer-became-a-nuclear-engineer/
Calculus? He probably doesn’t even know algebra.
I have an engineering degree from a world renowned university for math and sciences. It was in my senior year of high school that I really took to math. I learned that there are structural and objective mental disciplines needed to deal with the real world phenomena. My mother was an immigrant from Russia who only had 4th grade education but she could help me with my grade school arithmetic as we called it then. To have a POTUSA acknowledging grade school math is beyond his learning, even as taught today, is a disgrace to our, if it was our’s, educational system as well as the individual