dau coroana!!.......
![Dau Coroana class=](https://ro-static.z-dn.net/files/d9b/33993d55e3f05b675995897b9b66ad02.jpg)
Răspuns:
30x3=90
30x300
30x3.000=9.000
11x9=99
11x10=110
11x100=1100