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transforma.4 dm =?cm,9dm=?mm, 6 cm=?mm, 80dm=?cm, 30cm=?mm, 5dm=?mm

Răspuns :

4 dm= 40 cm;
9 dm=900 mm;
6 cm=600 mm;
80 dm=800 cm;
30 cm= 300 mm;
5 dm= 500 mm.