Ответ:

  1. MCXLVII = M + C + XL + VII = 1000 + 100 + 40 + 7 = 1147.

  2. MDCCCXII = M + D + CCC + X + II = 1000 + 500 + 300 + 10 + 2 = 1812.

  3. MCMXLV = M + CM + XL + V = 1000 + 900 + 40 + 5 = 1945.

  4. MMXIV = MM + X + IV = 2000 + 10 + 4 = 2014.

Ответ: 1) 1147; 2) 1812; 3) 1945; 4) 2014.