THE DEVELOPMENT OF STUDENTS’ MATHEMATICAL SKILLS IN THE EVALUATION OF NUMERICAL EXPRESSIONS INVOLVING ORDER OF OPERATIONS. The Eurasia Proceedings of Educational and Social Sciences, [S. l.], v. 4, p. 409–413, 2016. Disponível em: https://epess.net/index.php/epess/article/view/211. Acesso em: 27 dec. 2025.