: Provides video explanations for specific page numbers and exercises.

: These exercises usually involve mental math or column-based calculations with three-digit numbers.

: Multi-step problems that require choosing the correct operation (addition, subtraction, multiplication, or division) to find a solution. Homework Resources

Based on your request for the 3rd-grade math homework (DZ) from the "Harmony" (Garmoniya) workbook by N. B. Istomina, typically contains exercises focusing on multiplication and division of multi-digit numbers and unit conversions .

: A clear, ad-free interface for viewing solved problems from the "Harmony" series. To provide a more detailed write-up, could you clarify: Which Part of the workbook (No. 1 or No. 2) you are using? Which Exercise numbers you need help with?