I need to become razor sharp in 1 week. Any sites that do basic academic drills?

[thirdlegstump]

Looking for something that'll like flash a math or reading problem and force me to answer in like 10 seconds or whatever and then compile results and give me a percentage of accuracy. Been a real slacker lately and brain doesn't function at even 5% of what it used to be back in school.

 

[stinkynathan]

flash cards