There is no single "paper" for "Pravilnye Resheniia" (Correct Solutions) by E.E. Kochurova; instead, these solutions are found in and answer keys for the specific 1st-grade mathematics curriculum she co-authors. Where to Find Solutions
Sites like Elena Davydova's classroom page often list various diagnostic and control works for which keys can be found in teacher editions of the manuals. Purchase Options pravilnye resheniia po matematike1klass kochurova e.e
Platforms like Gitem provide detailed, step-by-step answers for both parts of the 1st-grade textbook and associated workbooks. There is no single "paper" for "Pravilnye Resheniia"