Talen 131 till 137 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 131 | = | CXXXI | = | 100 + 10 + 10 + 10 + 1 |
| 132 | = | CXXXII | = | 100 + 10 + 10 + 10 + 1 + 1 |
| 133 | = | CXXXIII | = | 100 + 10 + 10 + 10 + 1 + 1 + 1 |
| 134 | = | CXXXIV | = | 100 + 10 + 10 + 10 + 5 − 1 |
| 135 | = | CXXXV | = | 100 + 10 + 10 + 10 + 5 |
| 136 | = | CXXXVI | = | 100 + 10 + 10 + 10 + 5 + 1 |
| 137 | = | CXXXVII | = | 100 + 10 + 10 + 10 + 5 + 1 + 1 |