ANALYSIS OF STUDENTS ABILITY TO SOLVE SPEED OPERATION PROBLEMS IN ELEMENTARY SCHOOL. Aljabar Journal of Mathematics Education, [S. l.], v. 1, n. 1, p. 45–52, 2024. Disponível em: https://journal.cerdasnusantara.org/index.php/aljabar/article/view/63.. Acesso em: 13 feb. 2026.