Talen 378 till 384 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 378 | = | CCCLXXVIII | = | 100 + 100 + 100 + 50 + 10 + 10 + 5 + 1 + 1 + 1 |
| 379 | = | CCCLXXIX | = | 100 + 100 + 100 + 50 + 10 + 10 + 10 − 1 |
| 380 | = | CCCLXXX | = | 100 + 100 + 100 + 50 + 10 + 10 + 10 |
| 381 | = | CCCLXXXI | = | 100 + 100 + 100 + 50 + 10 + 10 + 10 + 1 |
| 382 | = | CCCLXXXII | = | 100 + 100 + 100 + 50 + 10 + 10 + 10 + 1 + 1 |
| 383 | = | CCCLXXXIII | = | 100 + 100 + 100 + 50 + 10 + 10 + 10 + 1 + 1 + 1 |
| 384 | = | CCCLXXXIV | = | 100 + 100 + 100 + 50 + 10 + 10 + 10 + 5 − 1 |