Bài 4 210 cm 2 ….2dm 2 10cm 2 1954cm 2 …..19dm 2 50cm 2 6dm 2 3cm 2 ….603cm 2 2001cm 2 ….20dm 2 10cm

Bài 4 

210 cm2 ….2dm210cm2                                 1954cm2 …..19dm250cm2

6dm23cm2….603cm2                                     2001cm2….20dm210cm2

Lời Giải:

Bài 4

210 cm2 = 2dm210cm2                                 1954cm2 > 19dm250cm2

6dm23cm2 = 603cm2                                     2001cm2 < 20dm210cm2