Not necessarily. It can be, but it does not have to be.
"you write six hundred only" in the line, and put --- 600.00------ in the box
Hitting children is not conducive to teaching them how to respect others.
Yes. You should be getting it now. They don't have to get it to you before the end of January. If you have not gotten it, perhaps they do not have your proper address. Often people move and forget to tell the employer. You should contact them for the facts.