huh, it's not bad. It works like a real calculator. There's only one error with this calculator. It's when you divide any number by zero. Yes, you can get infinity by dividing by zero, but considering that fact, it also means that it is undefined. So any number divided by zero is either undefined or "cannot be". Aside from this, It's alright, understanding that this is your first flash. (And next time, please don't expect anything to be blammed, just like what you wrote in your comment.) Oh, one more comment, try to put more design to the calculator, or any flash you will be making.