: Introduction to fraction equivalence, addition, and subtraction.

: Multi-step word problems involving long multiplication and division.

: Understanding place value, reading, and writing large multi-digit numbers.

: This site provides detailed solutions for both parts of the Rudnitskaya & Yudacheva 4th Grade Workbook , including versions from 2018 through 2024.

: For more generalized textbook solutions and potential alternative methods, Mathleaks covers various major publishers, though it is more focused on international curricula. Key Topics Covered in the 4th Grade Workbook

You can find comprehensive answer keys and step-by-step explanations on several educational platforms: