This answer key provides the answers for the textbook and workbook problems in Singapore Math's Primary Mathematics, Standards Edition series, from book 4A-6B. Exercise and Practice numbers are clearly labeled with the page numbers provided. Answers are line-listed, with graphical representations (i.e. graphs) where needed. 114 pages, softcover. Please note that these answers are found in the sold-separately Home Instructor's guides/teacher's guides for each level.