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30cm+4dm=?mm transforma

Răspuns :

Km, hm, dam, m, dm, cm, mm

30 cm = ? mm
30 cm = {1 salt spre dreapta} = 300 mm

4 dm = ? mm
4 dm = {2 salturi spre dreapta} = 400 mm

300mm+400mm=700 mm
30cm=300mm
4dm=400mm
300mm+400mm=700mm
Succes