This study aims to determine the types of errors of grade V elementary school students in fraction calculation operations based on students' intelligence level. This research is qualitative research with descriptive methods. The subject of this research were 30 students with the following details: four students in the high intelligence level category, sixteen students in the medium intelligence level category, and ten students in the low intelligence level category based on intelligence level indictors, namely figure ability, verbal ability and numerical ability. The conclusions of this research shows that, the types of errors made by students when completing fraction calculation operations are based on the student’s intelligence level. In the high intelligence level category, student’s do not experience problem in deciphering numerical problems where numerical errors are 0%, only make a few figure errors as much as 8.3%, and verbal errors as much as 6.25%. In the medium intelligence level category, students made a lot of verbal errors, 46.8%, numerical errors 35.4% and figure errors 27.08%. Meanwhile, for the low intelligence level category, the most numerical errors were 86.6%, followed by verbal errors 77.5% and finally figure errors 70%.
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