Randomly generate in a dynamic text field

Hello everyone! I am still having problems randomly generating some text in a dynamic text field box. I am new to flash 8 and I am struggling with the action script unless I have some guide to go by. But what I am trying to do is make numbers for ex. (1+1=, 2+2=, etc.) generate in a dynamic txt field at the click of a play button. I would greatly appreciate it if someone could help me.