Natella Нorodetska. Mental Arithmetic and Its Impact on the Development of Mathematical Abilities. The American Journal of Social Science and Education Innovations, [S. l.], v. 7, n. 04, p. 48–54, 2025. DOI: 10.37547/tajssei/Volume07Issue04-07. Disponível em: https://theamericanjournals.com/index.php/tajssei/article/view/6081. Acesso em: 22 jul. 2025.