This paper develops a system of practical exercises to enhance the mathematicalproblem-solving competencies of fifth-grade students using Realistic MathematicsEducation. The novelty of this study lies in creating tasks grounded in meaningful contexts,aimed at fostering mathematization and deeper conceptual understanding. Unlike traditionalexercises, these tasks engage students in applying mathematics to situations relevant to theirexperiences. Additionally, the paper provides a framework for designing similar tasks,contributing valuable resources for elementary mathematics education under the RMEframework.This paper develops a system of practical exercises to enhance the mathematicalproblem-solving competencies of fifth-grade students using Realistic MathematicsEducation. The novelty of this study lies in creating tasks grounded in meaningful contexts,aimed at fostering mathematization and deeper conceptual understanding. Unlike traditionalexercises, these tasks engage students in applying mathematics to situations relevant to theirexperiences. Additionally, the paper provides a framework for designing similar tasks,contributing valuable resources for elementary mathematics education under the RMEframework.