ex
5 hm =5*100 =500 m
2dam =2*1000 =2000 cm
2000 mm =2000 : 1000 =2 m
10000 dm =10000 :10000 =1 km
5000 m =5000:100 =50 hm
u .m mici se transforma in u.m mari prin impartire
u.m mari '' '' ''' '' mici prin inmultire
km hm dam m dm cm mm
/----------/----------/----------/----------/----------/----------/----------/
10 10 10 10 10 10
