Analisis Kesalahan Jawaban Siswa Dalam Menyelesaikan Soal Cerita Materi Pecahan Berdasarkan Kategori Kesalahan Newman Di SMP Negeri 2 Sawit

The research aims at identify errors which made by students to solve fractional operation number problems thus errors can be minimized and mathematics learning achievement can be improved. The type of this research is qualitative research. The data were collected by test, interviews, and documentation. The result of this research shows: (1) The errors which made by students to solve fractional operation problem is comprehension errors as 15,9%, transformation errors is 28,4%, process skill errors ids 63,6% and encoding errors is 50%. (2) There are 3 factors causing students didn’t used what is known and asked in writing the problem, misunderstanding concept and fractional operation, and the cause of errors because doesn’t write answers and conclusions. (3) The solution can be done to minimize students’ errors is make the language more communicative, applying cooperative teaching learning. Keywords: students’ errors, mathematical story problem, fractio