خضر A.; ازهار; YOUNIS, W.; وصف. The mental arithmetic strategy on the achievement among fourth grade girl students. Journal of Education for the Humanities , [S. l.], v. 3, n. 12, p. 17–38, 2025. Disponível em: https://rjps.uomosul.edu.iq/index.php/jeh/article/view/5942. Acesso em: 4 aug. 2025.