các ac giúp e vs ạ
a, 15km = ................m 5dam=..............m
540m=.................dm 205m=..............cm
b, 30km=.................m 7dam 6m=............m
31m 9dm=..........dm 45m 34cm=............cm
c, 24 000m=............hm 102 000cm=............m
12 000dam=............km 6400dm=..............m
15km = 15000m 5dam=50 m
540m=5400dm 205m=20500 cm
30km=30000m 7dam 6m = 76m
31m6dm=319dm 45m34cm= 4534cm
24000m=240hm 102000cm=1020m
12000dam=12km 6400dm=640m
15000 m 50m
5400dm 20500 cm
30000 m 76 m
319 dm 4534 cm
240 hm 1020 m
12 km 640 m