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9 dam + 4 hm + 129 m = ?m Rezolva

Răspuns :

9 dam=90 m
4hm=40dam=400m
9dam+4hm+129m=90m+400m+129m=619 m
9 dam + 4 hm + 129 m = ? m

90 m + 400 m + 129 m =

490 m + 129 m = 619 m