Singapore Math's Primary Mathematics, Standards Edition Workbooks are consumable and should be used in conjunction with the corresponding textbooks; these Standard Edition workbooks are not compatible with other Singapore editions (e.g. U.S. 3rd Ed.). Containing independent student exercises, workbooks provide the practice essential to skill mastery; each chapter in the textbook has corresponding problems in the workbook while review exercises help students to consolidate concepts they've learned previously. A variety of exercises are presented in the concrete>pictorial>abstract approach, covering whole numbers, fractions, multiply and dividing fractions, perimeter, area and surface area, and ratio. 143 pages, softcover. Grades 5-6.