: Sound-letter analysis, the use of hard ( ) and soft ( ) signs, and alphabetical order.

Looking for the "Answers to Russian Language Assessment Works for Grade 3" by Buneev?

: Sites like GDZ.RU and Gitem.me provide digital versions of the "Proverochnye i Kontrolnye Raboty" (Parts 1 & 2) by E.V. Buneeva.