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750hm-34dam=.......dm
7km+8hm=.......m


Răspuns :

a)
750 hm - 34 dam =?dm
750 hm × 1.000 = 750.000 dm
34 dam × 100 =3.400 dm
750.000 dm - 3.400 = 746.600
b)
7 km + 8 hm = ?m
7 km × 1000 = 7000 m
8 hm × 100 = 800 m
7000m + 800 m =7800 m