Completing plenty of practice problems, like the ones shown here, is a great way to study for math and science classes. So try your hand at all the problems provided in your textbook—even those that your instructor hasn’t assigned—and check out Web sites offering such problems. Source: Excerpt from page 315, COMAP, For All Practical Purposes: Mathematical Literacy in Today’s World, 9th ed. Copyright © 2013 by W. H. Freeman. Used by permission.