1) 1799 = 1000 + 500 + 200 + 99
1000 = М
500 = D
200 = 100 + 100 = CC
99 = 100 − 1 = IC
Ответ: 1799 = MDCCIC.
2) 1941 = 1000 + 900 + 40 + 1
1000 = M
900 = 1000 − 100 = CM
41 = 50 − 10 + 1 = XLI
Ответ: 1941 = MCMXLI.
1945 = 1000 + 900 + 40 + 5
1000 = M
900 = 1000 − 100 = CM
45 = 50 − 10 + 5 = XLV
Ответ: 1945 = MCMXLV.