3m7dm = 3,7 m 9dm4cm = ..............................m 5km20m= .......................... km 515 cm = ..............................m 2dm8mm=.............................dm 12dam230m2= 12,30 dam2 5km2155dam2 = ...................km2 8m27dm2=....................m2 78dm25cm2=.....................dm2 6m25cm2=.....................m2
9dm4cm=90m+0,04m=90,04m
5km20m=5km+0,02km=5,02km
515cm=5,15m
2dm8mm=2dm+0,08dm=2,08dm
cho xin tích nha^o^