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 solving problems with ratios and proportions, think about how you can apply these skills to real data. Refer back to page 551, the first page of Chapter 11, in your Basic Mathematics textbook and review the Iditarod musher distance-traveled application.

Here's your chance to explore the World Wide Web and practice your new skills at the same time. Follow some related Iditarod Web sites to learn more about this famous sled-dog race across the North American arctic.

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 11 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!