There are several websites which offer free practicable questions. Even the official website of SAT (collegeboard.com) provides free exercises for SAT Test preparation. You can access to College Board's SAT exercises here:
http://www.collegeboard.com/student/testing/sat/prep_one/prep_one.html. This is a SAT preparation center from College Board.

Some other websites for free SAT practice are:
http://www.onlinetestprep.com/engine/default1.asp
http://www.powerscore.com/sat/index.htm

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