ABUGRI, E.; MEREKU, D. K. PRIMARY SCHOOL CHILDREN’S DIFFICULTIES IN NUMBERS AND OPERATIONS PROBLEMS. International Journal of Engineering Technologies and Management Research, [S. l.], v. 11, n. 12, p. 1–21, 2024. DOI: 10.29121/ijetmr.v11.i12.2024.1511. Disponível em: https://www.granthaalayahpublication.org/ijetmr-ojms/ijetmr/article/view/1511. Acesso em: 14 jan. 2025.