a )2m3 cm +6 m 7 cm= 203+607=810cm
3m 14 cm+ 9m 7cm= 314+907=1221cm
3 dm 4 cm +7m 6 cm=34 +76=110 cm
b)5m 8 dm - 42 dm =160 cm
35 dm - 85 cm = 265 cm
5 km - 400 m =4500 cm
c) 3 m +5 cm - 2 dm=275 cm
8 km+ 300 m + 20 m=11 2000 cm
60 cm+4 dm-30 cm=70 cm
da-mi coroana!!