If you don't need teaching helps but would like an answer key for Singapore Primary Math, this product is for you. These are for the U.S. Edition Primary Math and include answers for both the textbooks and workbooks. The first booklet includes all the answers for textbook/workbook 1A to 3B while the second covers 4A to 6B.
NOTE: Used-Good copy has some slight wear to both covers, otherwise in great condition.