Réponse:
2350+3890+2867 = 9107m = 9,107km
Explication:
23,5hm = 2350m
3,89km = 3890m
286,7dam = 2867m
Tu additionnes et puis 9107m = 9,107km
1 hm = 100 m donc 23.5 hm = 2 350m
1 km = 1000 m donc 3,89 km = 3 890 m
1 dam = 10 m donc 286,7 dam = 2 867 m
2 350 + 3890 + 2867 = 9 107 m = 9,107 km
