: 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.

The first part of the 4th-grade curriculum typically covers:

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

: Try to solve the problem first, then use the site to check the final answer.

: Calculating perimeters and areas of complex figures. Tips for Using Reshebniks