It sounds like you're looking for information on how to use —the "ready-made homework" solutions—for the 4th-grade mathematics textbook by V.N. Rudnitskaya .
Rudnitskaya’s curriculum often involves multi-step word problems and logic puzzles. If you're stuck, the GDZ can show you the step-by-step breakdown of how to structure the solution. It sounds like you're looking for information on
Simply writing down the answers without understanding them often leads to poor performance during in-class exams where the GDZ isn't available. It sounds like you're looking for information on