Kemampuan Operasi Hitung Perkalian Dan Pembagian Siswa Tunagrahita Kelas X SMA. JOURNAL OF SONGKE MATH, [S. l.], v. 1, n. 1, p. 12–25, 2018. Disponível em: https://jurnal.unikastpaulus.ac.id/index.php/JSM/article/view/1726. Acesso em: 31 jul. 2026.