“ANALISIS KESULITAN BERHITUNG PERMULAAN KELAS RENDAH DALAM MATERI PENJUMLAHAN DAN PENGURANGAN BILANGAN DI SDN SINDANGSARI II”, Sindoro, vol. 18, no. 3, pp. 391–400, Jan. 2026, Accessed: Oct. 02, 2026. [Online]. Available: https://cibjournal.com/index.php/sindoro/article/view/5491