Diagnosis Of Mistake Complete Mathematical Story Problems Class V Students Of Elementary School Tanete Riattang Barat District Bone Regency

The problem in this study is about students' mistakes in solving mathematical story problems. The population in this study were all fifth grade students of SD Tanete Riattang Barat District, totaling 626 people from 3 clusters consisting of 13 schools and research samples were fifth grade students from schools selected by purposive cluster random sampling technique, namely SDN 22 Jeppe'e, SD Inpres 12/79 Bulu Tempe, and SD Inpres 10/73 Watang Palakka as many as 137 students consisting of 72 men and 65 women. Data collection techniques used were tests and interviews. The data analysis technique used 1) descriptive statistics, which were calculating the average score and percentage of students' mistakes, and 2) inferential statistics using one sample t-test. The results showed 1) The types of mistakes made by students were not complete writing down answers, wrong in writing answers, and not writing answers, 2) The level of students' mistakes in completing story problems at each step of solving math story problems was in the high category, 3) The cause of students making mistakes is students do not understand the purpose of the problem, not careful in writing answers, accustomed to abbreviating answers, lack of understanding and wrong way of working on problems (incorrectly using formulas, incorrect concepts, and wrong operations), and 4) The level of student mistakes is significant in solving math story problems.