This book includes answers for the Math Mammoth Grade 6-A and 6-B student worktexts, for all the chapter tests and end-of-year test, and for the cumulative reviews for grade 6 (2022 edition). The other parts of the 6th grade curriculum (the 6-A and 6-B worktexts and the cumulative reviews & tests book) may be purchased separately at Lulu.