This book appears to be in new condition. The answer explanation booklet is intact, with the answers and explanations present. However, the "answer sheets" on the back pages, intended for writing answers, seem to have been cut out and used. Consequently, there are missing pages, including the timeline questions on the reverse side. This can still be used as a practice problem set organized by unit. The following pages are missing: 53-54 57-60 63-66 69-72 75-78 81-82 85-88 91-94 97-100 103-105 106-108 115-116 119-120 A social studies practice problem set for 6th graders, with answer explanations. - Title: Practice Problem Set Social Studies 6th Grade Volume 1 - Publisher: Yotsuya Otsuka - Cover Color: Green - Number of Books: 2 - Contents: Includes answer explanations Thank you for viewing.