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In this context, several recent studies have focused on the ability to understand a problem and difficulties regarding the solving as a means of improve students’ mathematical problem-solving abilities. Design of research explores types and factors of mistakes students in solving mathematical problems. The instrument used is problem solving test. Data from Indonesia secondary school students (N = 147) who were about 15 years old were analyzed using theory Newman. Procedure Newman includes: reading errors, comprehension errors, transformation errors, process skill errors and enconding errors. The results indicate to reading errors of 4.35%, comprehension errors of 17.39%, transformation errors of 34.78%, process skill errors of 23.91%, and enconding errors 19.57%. Factors errors students’ is not to absorb information well, not understanding the transformation of the problem, not following the material thoroughly, and comprehension mathematical of weak concepts.
Sutiarso et al. (Sun,) studied this question.