GED "Scoreboost" materials target exactly the skills one needs to pass the General Educational Development (GED) tests. This book focuses on the Mathematics test, with material to help develop the skills needed for whole numbers, decimals, fractions, and percents. The workbook presents 16 strategies for skill development: (1) use a problem-solving plan; (2) determine whether there is enough information; (3) use estimation to solve problems; (4) break problems into smaller steps; (5) solve set-up problems; (6) use the Casio fx-260 calculator; (7) solve decimal problems using a calculator; (8) grid answers for whole number and decimal problems; (9) decide which operation to use with fractions; (10) use estimation with fraction problems; (11) solve fraction problems using a calculator; (12) solve ratio and proportion set-up problems; (13) grid answers to fraction and ration problems; (14) use the percent circle; (15) use a calculator to solve percent problems; and (16) choose the system that works best for you. The test taker should practice these activities, complete the two GED practice activities, and take the GED practice test at the end of the book. (SLD)