FAYZULLAYEV SHARIPBOY NURULLAYEVICH; SEVARA MAXAMAT QIZI NAZAROVA. Some methodological recommendations for increasing the efficiency of mastering mental arithmetic in preparatory groups. FAN VA TA’LIM INTEGRATSIYASI (INTEGRATION OF SCIENCE AND EDUCATION), [S. l.], v. 2, n. 3, p. 219–222, 2024. Disponível em: http://journal.uzfi.uz/index.php/ISE/article/view/196. Acesso em: 13 may. 2025.