The numbers 1955 to 1961 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 1955 | = | MCMLV | = | 1000 + 1000 − 100 + 50 + 5 |
| 1956 | = | MCMLVI | = | 1000 + 1000 − 100 + 50 + 5 + 1 |
| 1957 | = | MCMLVII | = | 1000 + 1000 − 100 + 50 + 5 + 1 + 1 |
| 1958 | = | MCMLVIII | = | 1000 + 1000 − 100 + 50 + 5 + 1 + 1 + 1 |
| 1959 | = | MCMLIX | = | 1000 + 1000 − 100 + 50 + 10 − 1 |
| 1960 | = | MCMLX | = | 1000 + 1000 − 100 + 50 + 10 |
| 1961 | = | MCMLXI | = | 1000 + 1000 − 100 + 50 + 10 + 1 |