The numbers 1420 to 1426 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 1420 | = | MCDXX | = | 1000 + 500 − 100 + 10 + 10 |
| 1421 | = | MCDXXI | = | 1000 + 500 − 100 + 10 + 10 + 1 |
| 1422 | = | MCDXXII | = | 1000 + 500 − 100 + 10 + 10 + 1 + 1 |
| 1423 | = | MCDXXIII | = | 1000 + 500 − 100 + 10 + 10 + 1 + 1 + 1 |
| 1424 | = | MCDXXIV | = | 1000 + 500 − 100 + 10 + 10 + 5 − 1 |
| 1425 | = | MCDXXV | = | 1000 + 500 − 100 + 10 + 10 + 5 |
| 1426 | = | MCDXXVI | = | 1000 + 500 − 100 + 10 + 10 + 5 + 1 |