Talen 1180 till 1186 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1180 | = | MCLXXX | = | 1000 + 100 + 50 + 10 + 10 + 10 |
| 1181 | = | MCLXXXI | = | 1000 + 100 + 50 + 10 + 10 + 10 + 1 |
| 1182 | = | MCLXXXII | = | 1000 + 100 + 50 + 10 + 10 + 10 + 1 + 1 |
| 1183 | = | MCLXXXIII | = | 1000 + 100 + 50 + 10 + 10 + 10 + 1 + 1 + 1 |
| 1184 | = | MCLXXXIV | = | 1000 + 100 + 50 + 10 + 10 + 10 + 5 − 1 |
| 1185 | = | MCLXXXV | = | 1000 + 100 + 50 + 10 + 10 + 10 + 5 |
| 1186 | = | MCLXXXVI | = | 1000 + 100 + 50 + 10 + 10 + 10 + 5 + 1 |