Let me know if these are not working and I will find more.
ACCUPLACER
http://www.aims.edu/student/assessment/studyguides/
http://www.huntington.edu/math/accuplacer/contents.htm
http://wcb.neit.edu/asc/prctctst.htm
http://www.testpreppractice.net/ACCUPLACER/Default.aspx
http://www.accuplacer-test.com/accuplacer-math-free-sample-questions.htm
http://academics.utep.edu/Default.aspx?tabid=25191
http://www.montgomerycollege.edu/Departments/math/placement/placetest.html
http://www.ccri.edu/Advising/NewStudents/accuplacerreview.pdf
http://www.montgomerycollege.edu/Departments/AssessCtr/studyguid.html
http://webs.anokaramsey.edu/schewe/math/mathpracticetests.pdf
SAT
www.majortests.com/sat/math-skills.php
www.4tests.com/exams/examdetail.asp?eid=6
www.onlinemathlearning.com/free-sat-practice-test.html
www.testprepreview.com/sat_practice.htm
www.test-guide.com/free-sat-practice-tests.html