Toshpulatova Durdona, Sultanov Turdali. THE ROLE OF MENTAL ARIFMETICS AND THINKING SKILLS IN MATHEMATICS LESSONS OF PRIMARY SCHOOLS. IEJRD - International Multidisciplinary Journal [Internet]. 2020 Jan. 20 [cited 2025 Nov. 6];5(1):5. Available from: https://iejrd.com/index.php/ /article/view/146