Răspuns:
km hm dam m dm cm mm
300m=3000 dm
300m=30000cm
300m=300000mm
9000cm=90m
9000mm=900cm
9000mm=9m
5km 8m = 5008m
7cm 4 mm= 74mm
2m 3dm 6cm=200cm+30cm+6=236cm
