Problem-solving and computational skills, with special focus on the use of the Casio FX-260 calculator, understanding grids, and strategies for handling word problems.. . Announcing the companion workbook series to the GED test series. . Practice makes perfect with McGraw-Hill's updated GED Workbook series, which reflects the 2002 test guidelines. These workbooks provide invaluable hands-on experience for students as they tackle hundreds of GED format questions and check results against an answer key. Simulated test-taking situations boost not only content retention but also confidence for the big day. Ideal study guides for a student weak in a particular subject area or sitting for one GED test at a time, these activity books function as a companion to McGraw-Hill's GED Test titles and McGraw-Hill's GED..