Answer key included. This item was used by a child this year, so there are approximately 20-30% markings, underlining, and notes. It will be shipped as is. I have not checked every page, so I will answer questions in the comments. The part with the name will be cut out as shown in the photo. The answer sheets attached to the winter course are not included because they were submitted to the cram school. Please understand that this is a used item before purchasing. For those who are interested, I can also provide the answer keys for the Core Master 6th grade math, social studies, and science, from the 1st to the 24th sessions, for 6000 yen. #Effort #SummerCourse #WinterCourse #EntranceExamPreparation #CoreMaster #SapiX