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 addition, subtraction, multiplication and division using mixed numerals, refer back to the mathematical application on page 135 and think about how you can apply your skill to real data. If half of a 30 minute cassette were damaged, what would be the length of the damaged portion? What other lengths of cassette tapes are generally available today? How many more minutes of music, expressed in mixed notation, does a compact disc hold than the longest playing cassette tape?

Here's your chance to explore the World Wide Web and apply your new skills at the same time. Follow some related Web sites to find interesting facts about the cassettes and other mediums for recorded music.

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 3 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!