12km = .....m = .....cm 150m = .....cm = .....mm 0,3km = .....m = .....mm 12,5m = .....dm = .....cm

`12km = 12 000 m = 1 200 000 cm`

`150m = 15 000 cm = 150 000 mm`

`0,3km = 300 m = 300 000 mm`

`12,5m = 125 dm = 1250 cm`

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`1 km = 10 ha = 100 dam = 1 000 m = 10 000 dm = 100 000 cm = 1 000 000 mm`

`color{red}{@kat ovn}`

12km =  12000 m = 1200000cm

150m = 15000cm = 150000mm
0,3km = 300m = 300000mm 
12,5m = 125dm = 1250cm 

Cách đổi : 1km = 10hm = 100dam = 1000m = 10000dm = 100000cm = 1000000mm