Talen 1 till 100 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1 | = | I | = | 1 |
| 2 | = | II | = | 1 + 1 |
| 3 | = | III | = | 1 + 1 + 1 |
| 4 | = | IV | = | 5 − 1 |
| 5 | = | V | = | 5 |
| 6 | = | VI | = | 5 + 1 |
| 7 | = | VII | = | 5 + 1 + 1 |
| 8 | = | VIII | = | 5 + 1 + 1 + 1 |
| 9 | = | IX | = | 10 − 1 |
| 10 | = | X | = | 10 |
| 11 | = | XI | = | 10 + 1 |
| 12 | = | XII | = | 10 + 1 + 1 |
| 13 | = | XIII | = | 10 + 1 + 1 + 1 |
| 14 | = | XIV | = | 10 + 5 − 1 |
| 15 | = | XV | = | 10 + 5 |
| 16 | = | XVI | = | 10 + 5 + 1 |
| 17 | = | XVII | = | 10 + 5 + 1 + 1 |
| 18 | = | XVIII | = | 10 + 5 + 1 + 1 + 1 |
| 19 | = | XIX | = | 10 + 10 − 1 |
| 20 | = | XX | = | 10 + 10 |
| 21 | = | XXI | = | 10 + 10 + 1 |
| 22 | = | XXII | = | 10 + 10 + 1 + 1 |
| 23 | = | XXIII | = | 10 + 10 + 1 + 1 + 1 |
| 24 | = | XXIV | = | 10 + 10 + 5 − 1 |
| 25 | = | XXV | = | 10 + 10 + 5 |
| 26 | = | XXVI | = | 10 + 10 + 5 + 1 |
| 27 | = | XXVII | = | 10 + 10 + 5 + 1 + 1 |
| 28 | = | XXVIII | = | 10 + 10 + 5 + 1 + 1 + 1 |
| 29 | = | XXIX | = | 10 + 10 + 10 − 1 |
| 30 | = | XXX | = | 10 + 10 + 10 |
| 31 | = | XXXI | = | 10 + 10 + 10 + 1 |
| 32 | = | XXXII | = | 10 + 10 + 10 + 1 + 1 |
| 33 | = | XXXIII | = | 10 + 10 + 10 + 1 + 1 + 1 |
| 34 | = | XXXIV | = | 10 + 10 + 10 + 5 − 1 |
| 35 | = | XXXV | = | 10 + 10 + 10 + 5 |
| 36 | = | XXXVI | = | 10 + 10 + 10 + 5 + 1 |
| 37 | = | XXXVII | = | 10 + 10 + 10 + 5 + 1 + 1 |
| 38 | = | XXXVIII | = | 10 + 10 + 10 + 5 + 1 + 1 + 1 |
| 39 | = | XXXIX | = | 10 + 10 + 10 + 10 − 1 |
| 40 | = | XL | = | 50 − 10 |
| 41 | = | XLI | = | 50 − 10 + 1 |
| 42 | = | XLII | = | 50 − 10 + 1 + 1 |
| 43 | = | XLIII | = | 50 − 10 + 1 + 1 + 1 |
| 44 | = | XLIV | = | 50 − 10 + 5 − 1 |
| 45 | = | XLV | = | 50 − 10 + 5 |
| 46 | = | XLVI | = | 50 − 10 + 5 + 1 |
| 47 | = | XLVII | = | 50 − 10 + 5 + 1 + 1 |
| 48 | = | XLVIII | = | 50 − 10 + 5 + 1 + 1 + 1 |
| 49 | = | XLIX | = | 50 − 10 + 10 − 1 |
| 50 | = | L | = | 50 |
| 51 | = | LI | = | 50 + 1 |
| 52 | = | LII | = | 50 + 1 + 1 |
| 53 | = | LIII | = | 50 + 1 + 1 + 1 |
| 54 | = | LIV | = | 50 + 5 − 1 |
| 55 | = | LV | = | 50 + 5 |
| 56 | = | LVI | = | 50 + 5 + 1 |
| 57 | = | LVII | = | 50 + 5 + 1 + 1 |
| 58 | = | LVIII | = | 50 + 5 + 1 + 1 + 1 |
| 59 | = | LIX | = | 50 + 10 − 1 |
| 60 | = | LX | = | 50 + 10 |
| 61 | = | LXI | = | 50 + 10 + 1 |
| 62 | = | LXII | = | 50 + 10 + 1 + 1 |
| 63 | = | LXIII | = | 50 + 10 + 1 + 1 + 1 |
| 64 | = | LXIV | = | 50 + 10 + 5 − 1 |
| 65 | = | LXV | = | 50 + 10 + 5 |
| 66 | = | LXVI | = | 50 + 10 + 5 + 1 |
| 67 | = | LXVII | = | 50 + 10 + 5 + 1 + 1 |
| 68 | = | LXVIII | = | 50 + 10 + 5 + 1 + 1 + 1 |
| 69 | = | LXIX | = | 50 + 10 + 10 − 1 |
| 70 | = | LXX | = | 50 + 10 + 10 |
| 71 | = | LXXI | = | 50 + 10 + 10 + 1 |
| 72 | = | LXXII | = | 50 + 10 + 10 + 1 + 1 |
| 73 | = | LXXIII | = | 50 + 10 + 10 + 1 + 1 + 1 |
| 74 | = | LXXIV | = | 50 + 10 + 10 + 5 − 1 |
| 75 | = | LXXV | = | 50 + 10 + 10 + 5 |
| 76 | = | LXXVI | = | 50 + 10 + 10 + 5 + 1 |
| 77 | = | LXXVII | = | 50 + 10 + 10 + 5 + 1 + 1 |
| 78 | = | LXXVIII | = | 50 + 10 + 10 + 5 + 1 + 1 + 1 |
| 79 | = | LXXIX | = | 50 + 10 + 10 + 10 − 1 |
| 80 | = | LXXX | = | 50 + 10 + 10 + 10 |
| 81 | = | LXXXI | = | 50 + 10 + 10 + 10 + 1 |
| 82 | = | LXXXII | = | 50 + 10 + 10 + 10 + 1 + 1 |
| 83 | = | LXXXIII | = | 50 + 10 + 10 + 10 + 1 + 1 + 1 |
| 84 | = | LXXXIV | = | 50 + 10 + 10 + 10 + 5 − 1 |
| 85 | = | LXXXV | = | 50 + 10 + 10 + 10 + 5 |
| 86 | = | LXXXVI | = | 50 + 10 + 10 + 10 + 5 + 1 |
| 87 | = | LXXXVII | = | 50 + 10 + 10 + 10 + 5 + 1 + 1 |
| 88 | = | LXXXVIII | = | 50 + 10 + 10 + 10 + 5 + 1 + 1 + 1 |
| 89 | = | LXXXIX | = | 50 + 10 + 10 + 10 + 10 − 1 |
| 90 | = | XC | = | 100 − 10 |
| 91 | = | XCI | = | 100 − 10 + 1 |
| 92 | = | XCII | = | 100 − 10 + 1 + 1 |
| 93 | = | XCIII | = | 100 − 10 + 1 + 1 + 1 |
| 94 | = | XCIV | = | 100 − 10 + 5 − 1 |
| 95 | = | XCV | = | 100 − 10 + 5 |
| 96 | = | XCVI | = | 100 − 10 + 5 + 1 |
| 97 | = | XCVII | = | 100 − 10 + 5 + 1 + 1 |
| 98 | = | XCVIII | = | 100 − 10 + 5 + 1 + 1 + 1 |
| 99 | = | XCIX | = | 100 − 10 + 10 − 1 |
| 100 | = | C | = | 100 |