You can find detailed exercise-by-exercise solutions on platforms like Resh Skysmart or purchase the physical guides through Akademkniga/Uchebnik .
While often integrated with Part 1 in some editions, the third part typically solidifies year-long learning. n.a churakova russkii iazyk 4 klass upr
Rules for spelling unstressed vowels in roots, prefixes, and suffixes, as well as the use of soft ( ) and hard ( Part 2: Development of Speech and Reference n.a churakova russkii iazyk 4 klass upr
Exercises on identifying prefixes, roots, suffixes, and endings. n.a churakova russkii iazyk 4 klass upr
Identifying verb conjugations (1st and 2nd) and correctly writing unstressed personal endings.