km hm dam m dm cm mm
/----------/----------/----------/-----------/----------/----------/----------/
10 10 10 10 10 10
ex 1 km =10*10*10 =1000 m (de la km pana la metru sunt 3 de 10 )
1 m = 10 dm
1m = 10*10 =100 mm
2m = 2:10 =0.2 dam
5m =5 : 1000 = 0.005 km