Bài 2: Viết đơn vị đo thích hợp vào chỗ trống?
a) 3m2 12dm2=3,12.....................?
4m2 5dm2= 4,5............................?
7m2 2036.......................=7,2036m2
5..........134cm2=5,0134m2
b) 23.............=0,23m2
40dm2=0,40.....................?
2435..............=24,35m2
407cm2=0,0407................
c) 5728m2=0,5728...................?
2070.......=0,2070ha
412m2=0,0412..............?
2m2 76.......................=2,0076m2