The purpose of this research is to improve the ability to solve fraction story problems through Realistic Mathematics Education (RME) approaches in Jatinom State Primary School fourth grade students Klaten academic year 2013/2014. This research shaped Classroom Aaction Rresearch. The research process is conducted in two cycles. Every cycle consists of four stages, that is Action planning, The implementation of the action, Observation, and Reflection. Data is collected by using observation, interview, test, and examine of document. To test the validity of data, researcher used triangulation of data and triangulation of methods. The data is analyzed by using an interactive analysis model, it consists of three component, that are data reduction, display data, and taking the conclucion. Based on result of the research, the percentage of students capability is improved in the first cycle and second cycle. Improved the ability proofed by the average values obtained before action (precycle) is 55.89 with 26.09% classical copletness. In the first cycle the average grade increased to 79.96 with 82.61% classical copletness. In the second cycle the average grade increased to 80.27 with 93.48% classical copletness. It can be concluded that Realistic Mathematics Education (RME) approaches can improve the ability of to solve fraction story problems
