It varies from person to person ... I'm not good at math, so it's normal to spend more time on math. I can only say that I am not good at math in grade one, and I write until twelve o'clock every day ... First of all, my health is the most important thing. I can sleep until five o'clock and write something. After all, I sleep better at night, or if it's really inevitable ... I need to catch up on sleep in class, get up and exercise more, or I'll get sick with poor resistance ... I think math in Grade One is okay, _<