a b c d e
| | | | |______ cifra unitatilor
| | | |_______ cifra zecilor
| | |_________ cifra sutelor
| |___________ cifra miilor
|_____________ cifra zecilor de mii
prin urmare numarul abcd=ax10000+bx1000+cx100+dx10+d
a) 33630=30000+3000+600+30
b) 17468=10000+7000+400+60+8
c) 38400=30000+8000+400
