The Errors Students from Primary Education and Secondary Education done while answering 2010 YGS-Mathematics Problems

This study aimed to find out and classify the errors done by 6th grade, 9th grade and 12th grade students in solving the questions selected from 2010 ygs-mathematics test. this study was designed in terms of descriptive research rules and purposive sampling rules were used to select the sampling. 19 students from 6th graders and 25 students each from 9th and 12th graders which means 69 students in total were applied a form consisting of 10 questions. errors found in students’ papers were grouped into misconceptions about problems, basic arithmetic errors, errors about the properties of numbers, methodological and conceptual errors. the results of this study indicated that most of the students left word problems blank. based on the errors, it was found that 12th grade students made mostly methodological errors whereas 6th grade students made fewer amounts of methodological errors. furthermore, more than half of the students from all grades made operational errors and conceptual errors made nearly the same amount by students from each grades.