The numbers 123 to 129 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 123 | = | CXXIII | = | 100 + 10 + 10 + 1 + 1 + 1 |
| 124 | = | CXXIV | = | 100 + 10 + 10 + 5 − 1 |
| 125 | = | CXXV | = | 100 + 10 + 10 + 5 |
| 126 | = | CXXVI | = | 100 + 10 + 10 + 5 + 1 |
| 127 | = | CXXVII | = | 100 + 10 + 10 + 5 + 1 + 1 |
| 128 | = | CXXVIII | = | 100 + 10 + 10 + 5 + 1 + 1 + 1 |
| 129 | = | CXXIX | = | 100 + 10 + 10 + 10 − 1 |