TÍNH 26 + 32 – 45 = ... 77 CM - 35 CM + 26 CM = ......

Bài 10 : Tính 26 + 32 – 45 = ... 77 cm - 35 cm + 26 cm = ... 68 – 40 – 26 = ... 57 cm + 20 cm + 12 cm = ...Group: https://www.facebook.com/groups/tailieutieuhocvathcs/ 55