Multiple format in one cell? Possible?

I'm not good at this. I know it. I've never taken a class and know just enough about excel to make me seem like a wizard to non-computer peeps and a Neanderthal to those of you who know what you're doing. Please, please help this Neanderthal!

I am making a time card/calender thing for work. I want to be able to put a small number in the corner of the cell for the date and then be able to go in and put a larger number in the center of the cell with the number of hours worked. I would very much like to be able to lock the calendar dates so that I don't mess them up, but to be able to change the hour values. Please be VERY detailed with your answer. I know it's probably simple...but probably not to me. Thank you so much!


Michelle