You can find the specific solutions for parts 1, 2, and 3 through the following popular resources:
: Offers a user-friendly interface to select specific page numbers and exercises. reshebnik po matematike 3 klass zakharova iudina besplatno
: Mastering the multiplication table and introducing division with remainders. Measurements : Converting units of length, mass, and time. Geometry : Calculating perimeter and area of basic shapes. You can find the specific solutions for parts
: Provides comprehensive answers for the 2018 edition and onwards. reshebnik po matematike 3 klass zakharova iudina besplatno
Порядок выполнения действий. Математика 3 класс. Видеоурок 3.3
Ready-to-use answers for the by O.A. Zakharova and E.P. Yudina (part of the "Perspective Primary School" series) are available online for free.