Talen 1434 till 1440 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1434 | = | MCDXXXIV | = | 1000 + 500 − 100 + 10 + 10 + 10 + 5 − 1 |
| 1435 | = | MCDXXXV | = | 1000 + 500 − 100 + 10 + 10 + 10 + 5 |
| 1436 | = | MCDXXXVI | = | 1000 + 500 − 100 + 10 + 10 + 10 + 5 + 1 |
| 1437 | = | MCDXXXVII | = | 1000 + 500 − 100 + 10 + 10 + 10 + 5 + 1 + 1 |
| 1438 | = | MCDXXXVIII | = | 1000 + 500 − 100 + 10 + 10 + 10 + 5 + 1 + 1 + 1 |
| 1439 | = | MCDXXXIX | = | 1000 + 500 − 100 + 10 + 10 + 10 + 10 − 1 |
| 1440 | = | MCDXL | = | 1000 + 500 − 100 + 50 − 10 |