B1)Điền số? 1m2=......dam2=........ha 15m2=.......dam2=.......hm2 8000m2=...........ha 1400cm2=..............m2 5ha=.............km2 B2) So sánh 2m2 5dm2 .........2,5m2 5m2 3dm2 ..........5,03m2 3m2 375cm2..........3,4m2 4km2 5m2 ..........4,00005km2 2hm2 15 dam2.........2,05hm2 44000m2 5dm2 .........4,5ha

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