I've been recently undertaking my PMP exam for project management. A tricky topic is that of Earned Value and it's calculations. There have been various different spreadsheets that can be used, but these do not help when you want to practice for your PMP exam.
I wanted to practice more so I created a small test page where a question is asked in the form of a PMP practice test question, and you can enter the values to see if you worked it out correctly. So give it a go!
Let me know how you get on!