If you are looking for the official solutions and pedagogical context for this curriculum, you should look for the following materials:
Addition, subtraction, and long-form multiplication/division. matematika rudnitskaia 4 klass otvet zadachi
While there isn't a single "proper paper" or official academic thesis specifically titled "matematika rudnitskaia 4 klass otvet zadachi," this phrase refers to the search for for the 4th-grade mathematics textbook authored by Victoria Rudnitskaya . If you are looking for the official solutions
Part of the "Nachalnaya Shkola XXI Veka" (Elementary School of the 21st Century) series, published by Ventana-Graf/Prosveshchenie. Rudnitskaya and T
Many websites offering "otvety" (answers) are unofficial third-party platforms. For the most "proper" and accurate versions, it is recommended to use the official Prosveshchenie (Education) publisher's digital library or authorized pedagogical resources.
Authored by V.N. Rudnitskaya and T.V. Yudacheva, this is the official "paper" that explains the logic behind the tasks and provides all correct answers.