| Hindu Arabic numeral | Roman numeral | % Correct |
|---|---|---|
| 10 | X | 100%
|
| 1000 | M | 98%
|
| 13 | XIII | 98%
|
| 20 | XX | 95%
|
| 117 | CXVII | 93%
|
| 1107 | MCVII | 93%
|
| 36 | XXXVI | 90%
|
| 416 | CDXVI | 88%
|
| 86 | LXXXVI | 88%
|
| 23 | XXIII | 88%
|
| 1599 | MDXCIX | 80%
|
| 26 | XXVI | 80%
|
| 362 | CCCLXII | 78%
|
| 54 | LIV | 78%
|
| 39 | XXXIX | 76%
|
| 377 | CCCLXXVII | 73%
|
| 398 | CCCXCVIII | 71%
|
| 936 | CMXXXVI | 71%
|
| 63 | LXIII | 71%
|
| 399 | CCCXCIX | 68%
|
| 973 | CMLXXIII | 68%
|
| 1977 | MCMLXXVII | 68%
|
| 49 | XLIX | 68%
|
| 877 | DCCCLXXVII | 66%
|
| 65 | LXV | 66%
|
| 349 | CCCXLIX | 59%
|
| 845 | DCCCXLV | 59%
|
| 846 | DCCCXLVI | 51%
|