进行单位换算0.015km=0.015×1000m=--------m0.015km=0.015×10000dm=---

0.015km=0.015×1000m=__15___m
0.015km=0.015×10000dm=__150__dm
0.015km=0.015×100000cm=___1500___cm
0.015km=0.015×1000000mm=__15000___mm
12.5mm=12.5×0.001m=___0.0125__m
12.5mm=12.5×0.000001km=_0.0000125_km
10nm=10×0.0000001cm=___0.000001___cm
10nm=10×0.000000001m=_0.00000001_m
2.5h=2.5×60min=_150_min
2.5h=2.5×3600s=_9000_s
120s=120×1/60min=__2__min
120s=120×1/3600h=_0.033333_h