There are lots of different ways of remembering things and maths is no different.
I'm lucky I have a maths oriented brain. But even so everyone hits a level where they struggle...personally never got my head around some vector maths I had to do.
I found understanding a practical reason for the maths helped a lot. As has been described before fractions are quite easy if you imagine a pie or column chopped into bits.
the total number of bits is on the bottom and the number you have available is on the top.
As others have said feel free to ask and someone will help....don't worry about sounding stupid.../we all have weak points.
S_R