Talen 2909 till 2915 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 2909 | = | MMCMIX | = | 1000 + 1000 + 1000 − 100 + 10 − 1 |
| 2910 | = | MMCMX | = | 1000 + 1000 + 1000 − 100 + 10 |
| 2911 | = | MMCMXI | = | 1000 + 1000 + 1000 − 100 + 10 + 1 |
| 2912 | = | MMCMXII | = | 1000 + 1000 + 1000 − 100 + 10 + 1 + 1 |
| 2913 | = | MMCMXIII | = | 1000 + 1000 + 1000 − 100 + 10 + 1 + 1 + 1 |
| 2914 | = | MMCMXIV | = | 1000 + 1000 + 1000 − 100 + 10 + 5 − 1 |
| 2915 | = | MMCMXV | = | 1000 + 1000 + 1000 − 100 + 10 + 5 |