Bài 3 Làm theo mẫu: 5,6m = 5 m= 5m6dm = 56dm 6,4m = ........................................cm 7,6dm = ......................................cm 52,5dm = ....................................mm 1,005km = ......................................m 4,8dam2= .............................................m2 9,05dam2= ..........................................m2 5,1hm2= ...............................................m2 3,4km2= .............................................hm2 3,3kg = ................................................g 2,22kg= ...............................................g