Speed Meets Accuracy: Effectiveness of Left to Right Method on Mental Addition and Subtraction Skills of Elementary Students. Journal of Basic Education Research, [S. l.], v. 6, n. 2, p. 184–196, 2025. DOI: 10.37251/jber.v6i2.1735. Disponível em: https://cahaya-ic.com/index.php/JBER/article/view/1735. Acesso em: 20 may. 2026.