Extra Practice exercises are downloadable worksheets of additional practice exercises. Print out these worksheets, work through the exercises, then check your work against the answer page.

Once you've practiced and mastered the measures in this chapter, think about how you can apply these skills to real data. Refer back to page 471, the first page of Chapter 9, in your Basic Mathematics textbook and review the "size" of a million dollars application.

Here's your chance to explore the World Wide Web and practice your new skills at the same time. Surf to the Web site of the Bureau of Engraving to learn more about our national currency.

After you've practiced and after you've explored, don't forget about your upcoming Chapter Test. Prepare for your exam by working through our Chapter 9 Review, and then check your answers. These free downloadable files are accessible by selecting the Chapter Review button at the top of this page.

Good luck!