Latest Edition for Reiwa 7 (2025 Edition) Common Edition Mathematics Grade 9 (3rd Year of Junior High School) Key Work Key Test This is a common edition, so it corresponds to all textbooks. A textbook correspondence table is included at the end of the Key Work, allowing you to see the corresponding units. This is a set of problem book and answer explanations. A separate volume of regular test preparation Key Tests is included. Instant purchase without comments is OK (*^^*) Brand new, unused. Ships immediately, so it will be delivered the next day. We will ship immediately after confirming payment!