Book excerpt: Written for the millions of students each year who struggle with the math portion of the GED, McGraw-Hill's Top 50 Math Skills for GED Success helps learners focus on the 50 key skills crucial for acing the test. From making an appropriate estimate and solving for volume, to interpreting a bar graph and identifying points on a linear equation, this distinctive workbook from the leader in GED study guides features step-by-step instructions; example questions and an explanatory answer key; short concise lessons presented on double-page spreads; an appealing, fully correlated pretest and computational review of basic skills; application, concept, and procedure problems; and more.