The numbers 668 to 674 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 668 | = | DCLXVIII | = | 500 + 100 + 50 + 10 + 5 + 1 + 1 + 1 |
| 669 | = | DCLXIX | = | 500 + 100 + 50 + 10 + 10 − 1 |
| 670 | = | DCLXX | = | 500 + 100 + 50 + 10 + 10 |
| 671 | = | DCLXXI | = | 500 + 100 + 50 + 10 + 10 + 1 |
| 672 | = | DCLXXII | = | 500 + 100 + 50 + 10 + 10 + 1 + 1 |
| 673 | = | DCLXXIII | = | 500 + 100 + 50 + 10 + 10 + 1 + 1 + 1 |
| 674 | = | DCLXXIV | = | 500 + 100 + 50 + 10 + 10 + 5 − 1 |