Talen 868 till 874 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 868 | = | DCCCLXVIII | = | 500 + 100 + 100 + 100 + 50 + 10 + 5 + 1 + 1 + 1 |
| 869 | = | DCCCLXIX | = | 500 + 100 + 100 + 100 + 50 + 10 + 10 − 1 |
| 870 | = | DCCCLXX | = | 500 + 100 + 100 + 100 + 50 + 10 + 10 |
| 871 | = | DCCCLXXI | = | 500 + 100 + 100 + 100 + 50 + 10 + 10 + 1 |
| 872 | = | DCCCLXXII | = | 500 + 100 + 100 + 100 + 50 + 10 + 10 + 1 + 1 |
| 873 | = | DCCCLXXIII | = | 500 + 100 + 100 + 100 + 50 + 10 + 10 + 1 + 1 + 1 |
| 874 | = | DCCCLXXIV | = | 500 + 100 + 100 + 100 + 50 + 10 + 10 + 5 − 1 |