This is a set including answer keys (with problems) for review tests, calculation tests, and comprehensive review tests from Tetsuryukai, as well as supplementary printouts, comprehensive exercises (with answer keys), and four comprehensive review tests. Review Tests: 23-42 (all of the second semester) (35 is missing) Calculation Tests: 23-43 (all of the second semester) (no missing pages) There are some markings with highlighter. Some pages have holes from being in a binder. There are some bent pages, but overall they are in good condition. The comprehensive review tests have writing from when they were solved. We recommend purchasing this item along with the first-year high school textbooks and problem sets, which are sold separately. If you do so, please submit a request for a bundle purchase. We also have other reference books for sale, so we welcome bundled purchases. Please feel free to leave a comment. This is a used item and has been stored by an amateur. Please only purchase if you understand this. The black spots in the product images are not on the product itself but are due to a malfunction of my camera. If you wish to purchase, please read my profile.