Talen 3966 till 3972 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 3966 | = | MMMCMLXVI | = | 1000 + 1000 + 1000 + 1000 − 100 + 50 + 10 + 5 + 1 |
| 3967 | = | MMMCMLXVII | = | 1000 + 1000 + 1000 + 1000 − 100 + 50 + 10 + 5 + 1 + 1 |
| 3968 | = | MMMCMLXVIII | = | 1000 + 1000 + 1000 + 1000 − 100 + 50 + 10 + 5 + 1 + 1 + 1 |
| 3969 | = | MMMCMLXIX | = | 1000 + 1000 + 1000 + 1000 − 100 + 50 + 10 + 10 − 1 |
| 3970 | = | MMMCMLXX | = | 1000 + 1000 + 1000 + 1000 − 100 + 50 + 10 + 10 |
| 3971 | = | MMMCMLXXI | = | 1000 + 1000 + 1000 + 1000 − 100 + 50 + 10 + 10 + 1 |
| 3972 | = | MMMCMLXXII | = | 1000 + 1000 + 1000 + 1000 − 100 + 50 + 10 + 10 + 1 + 1 |