... Ngân, Minh: 12 2 cm, 13 0 cm, 12 7cm, 11 8 cm đợc gọi là dÃy số liệu.- 1 hs đọc: 12 2 cm, 13 0 cm, 12 7 cm, 11 8 cm.- Đứng thứ nhất.- Đứng thứ nhì.- Số 12 7 cm.- 11 8 cm.- Có 4 số.- 1 hs lên bảng ... bµi.a. C¸ch 1: LÊy 1 tê giÊy b¹c 2000®, 1 tê giÊyb¹c 10 00®, 1 tê giÊy b¹c 500® vµ 1 tê giÊyb¹c 10 0® th× ®ỵc 3600®.C¸ch 2: LÊy 3 tê giÊy b¹c lo¹i 10 00®, 1 têgiÊy b¹c 500® vµ 1 tê giÊy b¹c 10 0® = ... 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