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23 hm-4000 dm=? dam
63hm-1300cm=?m
18dm-5cm=?dm


Răspuns :

23 hm = 230 dam
4000 dm = 40 dam
230 dam - 40 dam = 190 dam

63 hm = 6300 m
1300 cm = 13 m
6300m - 13m =6287 m

18dm = 18 dm
5 cm = 0,5 dm
18dm - 0,5 dm = 17,5 dm