If all you have is some rote memorization about mathmatics you can use those memorized items to study in your own head. So while you shower or drive you can thi

If all you have is some rote memorization about mathmatics you can use those memorized items to study in your own head. So while you shower or drive you can think about the math you've memorized and develope a deeper understanding. As you say, memorization can be a useful part of a deeper understanding.