Studi tentang analisis penyebab kesalahan dalam menyelesaikan soal cerita berdasarkan NEA yang telah dilakukan dapat menentukan solusi penyebab kesalahan siswa. Jenis penelitian ini adalah kualitatif. Pengumpulan data menggunakan teknik tes, observasi, wawancara, dan dokumentasi. Teknik analisis data kualitatif menggunakan model Miles dan Huberman. Berdasarkan hasil penelitian dapat disimpulkan bahwa faktor penyebab kesalahan siswa adalah mencontoh, terburu-buru, tidak paham konsep, kurang teliti, lupa, tidak fokus, dan dipengaruhi kesalahan tahap sebelumnya. Kata Kunci: NEA (Newman Error Analysis), penyelesaian soal, soal cerita

The studies of the analysis causes error in problem solving of word problem based on the NEA (Newman Error Analysis) that has been done can know determine the solution of student’s mistakes. The research used a qualitativ. Technique of collecting data used test, observation, interviews, and documentation. Technique of analyzing data used Miles and Huberman models. Based on the results of this research it can be concluded that factors errors students were imitating, being in a hurry, not understanding the concept, being inaccurate, forgetting, not focusing, and being influenced by the mistakes of the previous stage. Keyword: NEA (Newman Error Analysis), problem solving, word problem

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