SAT vocabulary to learn

Hi

Which are the vocabulary units to learn before taking the SAT? I've found a list of 262 words on the blog, but then I tried practice tests, and there were only 5-10 mentioned. While writing, you may realize you are not sure about the spellings of certain words, or cannot seem to find a better alternate word for something that is on your mind, and end up browsing about it. This may sound very obvious, but many of us (especially those who are workaholics) find it hard to set small milestones. And I try to take at least several practice tests a day (those samples available on Prepscholar).