"Scratch-work" synonym
It is called scribble.
You can search "scribble math", "scribble formula" etc. and see example images as well.
Perhaps work notes. This can refer to a wide range of preparatory material in fields beyond mathematics.
It is called scribble.
You can search "scribble math", "scribble formula" etc. and see example images as well.
Perhaps work notes. This can refer to a wide range of preparatory material in fields beyond mathematics.