http://www.act.org/qotd/
This site provides you an ACT problem of the day
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https://www.march2success.com/index.cfm

This site has seven full-length ACT exams that will provide you valuable data.  Simply create a log-in and password and have full access to ACT assistance.  There are other programs associated with this site that may also help you with the development of basic math skills.
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http://www.eKnowledge.com/NFHS

This site offers you the opportunity to receive FREE ACT & SAT Test Preparation Programs.