Talen 175 till 181 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 175 | = | CLXXV | = | 100 + 50 + 10 + 10 + 5 |
| 176 | = | CLXXVI | = | 100 + 50 + 10 + 10 + 5 + 1 |
| 177 | = | CLXXVII | = | 100 + 50 + 10 + 10 + 5 + 1 + 1 |
| 178 | = | CLXXVIII | = | 100 + 50 + 10 + 10 + 5 + 1 + 1 + 1 |
| 179 | = | CLXXIX | = | 100 + 50 + 10 + 10 + 10 − 1 |
| 180 | = | CLXXX | = | 100 + 50 + 10 + 10 + 10 |
| 181 | = | CLXXXI | = | 100 + 50 + 10 + 10 + 10 + 1 |