I have a laptop Windows 7, and I am trying to use the arrow keys found on #4 and #6. I can't figure out how to get them to work.
I am not sure what you mean. Do you want them to work, as in typing numbers or going left/right etc, or do you want them to print something? Anyway, in most laptops (this would be easier if you had included your laptop model), there is a special function key that enables the "num pad".
Either you have a dedicated numpad (which very few laptops do). In that case, you can toggle the behavior of the keys bu hitting the "NumLock" button (source):
If your laptop does not have a dedicated numpad, there will be a combination of Fn and some other button to enable it. For example (source):
If you update your question with your specific laptop model, and an explanation of what you mean by "work" I should be able to give you a more detailed answer.