Hello, Gina! Please don't include the problem number when putting ==Problem== at the top of pages. Also, please create a section called ==See Also== at the bottom of the problem pages you edit and add a problem box below it (see Template:AMC12_box). Notice that AMC12 is interchangeable with the name of the appropriate contest.
One more thing
I see that you added the box! Thanks!
On pages like 2011_AMC_10B_Problems/Problem_9, please do not put the problem number after the first subheading! For example, change ==Problem 9== to ==Problem==. Thanks. 16:52, 4 June 2011 (EDT)