Sites like Labirint and Wildberries often sell the textbook sets and sometimes companion workbooks which might include answer keys, though the main curriculum relies on teacher/parent guidance.
"Otveti" (answers) for this curriculum can be found in several ways, often referred to as GDZ (Ready Homework Solutions). demidova kozlova tonkikh 2 klass otvety
To help you find the specific solutions you need, could you tell me: are you working on? Which lesson or exercise number is causing trouble? If you have a photo of the problem, that is even better! Sites like Labirint and Wildberries often sell the
Includes work with numbers up to 100, introduction to multiplication and division, word problems, geometric shapes, and basic measurements (perimeter/area). introduction to multiplication and division
It is a 3-part series, which allows for a modular approach to teaching throughout the school year.