Question

How should you remember maths

Answer 1

Work. Exploration. Focus.

Answer 2

Practice topics you are having difficulty with and memorize formulas

Answer 3

practice problems and understand the process/steps required

Answer 4

To memorize maths is a sin! The understanding is the key!
(Maybe not to an absolute extent, but you know...)

Answer 5

Make lists.

This is how I remember the first 10 nonnegative integers...

0, 1, 2, 3, 4, 5, 6, 7, 8, 9

:-)