: Another stable site where you can find Bashmakov/Nefedova Class 4 answers. It includes scanned pages of the completed exercises.

Several reliable platforms host the full answer keys for the "Planet of Knowledge" (Planeta Znaniy) curriculum:

: This is one of the most popular sources. You can view the Class 4 Mathematics section on GDZ.ru to find both the textbook and workbook (Rabochaya Tetrad) solutions. It allows you to select specific page numbers or exercise numbers directly in your browser.