4⨯ 3 = 905⨯ 3= 2715B

Câu 4.a. 3620 : 4⨯ 3 = 905⨯ 3= 2715b. 2070 : 6⨯ 8 = 345⨯ 8= 2760Tham khảo:https://vndoc.com/giai-toan-lop-3