Răspuns:
12 hm - 3200 cm + 730 dam =
= 1 200 m - 32 m + 73 m =
= 1 241 m
b) 130 hm + 12.000m - 800 dam =
= 13 km + 12 km - 8 km =
= 17 km
c) 13.000 mm + 79 hm - 480 dm=
= 13 m + 79 00 m - 48 m =
= 7865 m
d) 31 km + 45 hm -700 m =
= 3 100 dam + 450 dam - 70 dam =
= 3 550 dam - 70 dam =
= 3 480 dam