This document is part 2 of the workbook for grade 4 pupils in the Comprehensive Instructional Management System, a unified mathematics curriculum for kindergarten through grade 7. Each objective is developed by a variety of strategies, with mastery of objectives diagnosed through a testing component. The activities in the student workbook are designed to provide practice in mastering the performance objectives, following the sequence in the teacher's manual. Over 120 performance objectives are included in this part of the grade 4 workbook, designed to develop computational skills with fractions, number and numeration concepts, measurement skills, and other mathematical topics. (MNS)