Analysis of Student Errors in Completing Spotting of Round Numbers Based on Castolan Theory. Jurnal Sekolah Dasar, [S. l.], v. 6, n. 1, p. 55–59, 2021. DOI: 10.36805/jurnalsekolahdasar.v6i1.1288. Disponível em: https://journal.ubpkarawang.ac.id/index.php/PGSD/article/view/1288. Acesso em: 17 sep. 2025.