Răspuns:
9.
LXI,CCCXVI,D,DCCLIV,MX,MCMXL
66,316,500,769,1010,1940
10.
DCXV,CDXV,DXCV,
11.CIX=CIX
XC<CM
MVIII<MXIX
LXIV<LXVI
DL<XL
XXXI<C
12.CM
CDVI
CMXCIX
CII
DCCLVIII
CCCXXVII
13.
CCXIV+CCCXXV=DXXXIX
DXI-CDLV=CLVI
CXL×II=CCLXXX
LVI:VII=VIII
