APEX Test Prep's 4th Grade Math Workbook: 1500+ Practice Questions for Daily Exercise [Math Workbooks Grade 4] This workbook was developed to help 4th grade students master all of the important skills that they have learned up to this point. It starts with the most basic concepts and works up to some rather advanced concepts. It is broken down into the four main content areas listed below: Arithmetic Measurement and Data Algebra Geometry Math can be frustrating, but it doesn't have to be! Our goal at APEX Test Prep is to help your 4th grader succeed, and with our detailed answer explanations, they won't have to make the same mistake twice.