Since you didn't specify a particular exercise (upr) number,
Supplementary materials by Labirint offer additional practice exercises specifically aligned with the Ramzaeva textbook. t g ramzaeva russkii iazyk 3 klass upr
The T.G. Ramzaeva (Т. Г. Рамзаева) 3rd-grade Russian language textbook is a classic educational resource widely used in primary schools. It is currently published by in two parts and is designed to build foundational grammar and speech skills. Since you didn't specify a particular exercise (upr)
Parsing words by their components (root, suffix, etc.) or performing sound-letter (phonetic) analysis. etc.) or performing sound-letter (phonetic) analysis.