Key aptitude tests, such as the PSAT, SAT, and GRE, include a quantitative comparison section within the math portion of the exam, so for college-bound students, mastering this question type is essential for getting into their school of choice. What makes this book different than other math practice books? It’s simple–this volume contains only questions that ask which column contains the item of greater value, if the values are the same, or if the value cannot be determined by the information given.