| ROMAN NUMERAL | NUMBER | EXPLANATION |
| IV | 4 | IV = V − I = 5 − 1 = 4.
|
| VII | 7 | VII = V + II = 5 + 2 = 7. |
| VIII | 8 | VIII = V + III = 5 + 3 = 8. |
| IX | 9 | IX = X − I = 10 − 1 = 9. |
| XI | 11 | XI = X + I = 10 + 1 = 11. |
| XII | 12 | XII = X + II = 10 + 2 = 12. |
| XIV | 14 | XIV = X + (V − I) = 10 + (5 −1) = 14. |
| XVII | 17 | XVII = X + V + II = 10 + 5 + 2 = 17.
|
| XIX | 19 | XIX = X + (X − I) = 10 + (10 − 1) = 19. |
| XXIII | 23 | XXIII = X + X + III = 10 + 10 + 3 = 23. |
| XXXII | 32 | XXXII = X + X + X + II = 10 + 10 + 10 + 2 = 32.
|
| XXXIV | 34 | XXXIV = X + X + X + (V − I) = 10 + 10 + 10 + (5 − 1) = 34. |
| XLIV | 44 | XLIV = (L − X) + (V − I) = (50 − 10) + (5 − 1) = 44 |
| XLV | 45 | XLV = (L − X) + V = (50 − 10) + 5 = 45 |
| LX | 60 | LX = L + X = 50 + 10 = 60.
|
| LXVI | 66 | LXVI = L + X + V + I = 50 + 10 + 5 + 1 = 66.
|
| LXXV | 75 | LXXV = L + XX + V = 50 + 20 + 5 = 75.
|
| LXXXIV | 84 | LXXXIV = L + XXX + (V − I) = 50 + 30 + (5 − 1) = 84.
|
| CI | 101 | CI = C + I = 100 + 1 = 101. |
| CIV | 104 | CIV = C + (V − I) = 100 + (5 − 1) = 104.
|
| CVIII | 108 | CVIII = C + V + III = 100 + 5 + 3 = 108. |
| CX | 110 | CX = C + X = 100 + 10 = 110.
|
| CXI | 111 | CXI = C + X + I = 100 + 10 + 1 = 111.
|
| CXVI | 116 | CXVI = C + X + V + I = 100 + 10 + 5 + 1 = 116.
|
| CXXVIII | 128 | CXXVIII = C + XX + V + III = 100 + 20 + 5 + 3 = 128. |
| CXXIX | 129 | CXXIX = C + XX + (X − I) = 100 + 20 + (10 − 1) = 129. |
| CXXXIII | 133 | CXXXIII = C + XXX + III = 100 + 30 + 3 = 133. |
| CXXXIV | 134 | CXXXIV = C + XXX + (V − I) = 100 + 30 + (5 −1) = 134. |
| CXLVII | 147 | CXLVII = C + (L − X) + V + II = 100 + (50 − 10) + 5 + 2 = 147. |
| CL | 150 | CL = C + L = 100 + 50 = 150. |
