Sapix 6th Grade Math ★ Basic Skills Training ★ One year's worth (2 books missing). Original. ※ This is a really good textbook! It covers important elements of the entrance exam, and the problems are repeated at good intervals during daily training, so basic skills (+ application) are reinforced!! ■ Math Basic Skills Training 10-book set, all with answer keys and explanations. Books 2 and 3 were completely copied and used, so they are new. The remaining books have some writing on the first few pages, and about half of them are written in. Since my child used them, there are writings, but they are all in pencil. There are occasional marks and scores in colored pen. They will be delivered as is, so please understand before purchasing. Returns are not accepted to prevent copying. Shipping included.