Analisis Validitas dan Reliabilitas Butir Soal Matematika Materi Aritmetika Sosial di SMPN 1 Lembah Sorik Merapi. JMTL [Internet]. 2026 Jun. 30 [cited 2026 Sep. 18];4(2):452-64. Available from: https://jurnal.stain-madina.ac.id/index.php/matematika/article/view/2978