Mathematical problem solving is a skill that must be possessed by students because it is very important to solve problems and include goals in learning mathematics. But at the time of math learning some students have difficulty in solving problems because of the low mathematical problem-solving ability that students have. This research aims to describe the mathematical problem-solving ability of grade VIII students in solving mathematical problems in patterns of numbers. This research uses qualitative descriptive methods. Purposive sampling techniques were used to select subjects in the study, and selected 6 students as research subjects. This study uses 3 questions in the form of a description. The data collection techniques in this study are tests and interview skills. The study was conducted using the results of student answers analyzed based on indicators of problem-solving skills based on the Polya stage. The results of this study showed that students' mathematical problem-solving skills on indicators wrote information and wrote a settlement plan is 55.56% including moderate categories, then on the problem solving indicators is 44.45% including moderate categories, and on the indicator evaluate is 22.23% including low categories.

<p><em>This study aimed to determine the effect of the habit of mind and self-efficacy on students' mathematical problem-solving abilities. The approach used is quantitative with the ex post facto method. The population in this study were all eighth-grade students at </em><em>one of the </em><em>SMP</em><em> in Bekasi city</em><em>. The sample taken amounted to 69 students. The instrument used is a test in the form of a description of the problem-solving ability, a habit of mind questionnaire, and a self-efficacy questionnaire. Simple and multiple linear regression analysis was used to analyze the data in this study. Based on the results of the study, it can be concluded that the influence of habit of mind on mathematical problem-solving abilities is equal to 22.1%, and there is an influence of self-efficacy on mathematical problem-solving abilities that is equal to 22.9%. Furthermore, there is an influence of habit of mind and self-efficacy on mathematical problem-solving ability, which is 34.7%. Thus, it is found that habits of mind and self-efficacy significantly affect students' mathematical problem-solving abilities.</em></p><p><em><br /></em></p><p>Tujuan penelitian ini adalah mengetahui pengaruh <em>habit of mind dan self-efficacy</em> terhadap kemampuan pemecahan masalah matematis siswa. Pendekatan yang digunakan adalah kuantitatif dengan metode <em>ex post facto</em>. Populasi dalam penelitian ini yaitu seluruh siswa kelas VIII di salah satu SMP di Kota Bekasi. Sampel yang diambil berjumlah 69 siswa. Instrumen yang digunakan adalah tes berbentuk soal uraian tentang kemampuan pemecahan masalah, angket <em>habit of mind</em><em>,</em> dan angket <em>self-efficacy. </em>Analisis regresi linear sederhana dan berganda digunakan untuk menganalisis data pada penelitian ini. Berdasarkan hasil penelitian dapat diambil kesimpulan bahwa terdapat pengaruh <em>habit of mind terhadap </em>kemampuan pemecahan masalah matematis yaitu sebesar 22,1%, terdapat pengaruh <em>self-efficacy </em>terhadap kemampuan pemecahan masalah matematis yaitu sebesar 22,9%. Selanjutnya, terdapat pengaruh <em>habit of mind</em> dan <em>self-efficacy</em> terhadap kemampuan pemecahan masalah matematis yaitu sebesar 34,7%. Dengan demikian, diperoleh bahwa <em>habit of mind</em> dan <em>self-efficacy</em> berpengaruh signifikan terhadap kemampuan pemecahan masalah matematis siswa.</p>