9 = 2 11 – 3 = ……

11- - bai-tap-toan-lop-2-phep-cong-co-nho
bai-tap-toan-lop-2-phep-cong-co-nho

11-9 = 2

11 – 3 = …….

11 – 7 = ……..

11 – 5 = …….

11 – 3 = ………..