Roman Numerals — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Write 88 in Roman numerals: LXXXVIII.
Fifty plus thirty plus eight equals eighty-eight, matching LXXXVIII.
2. Convert XC to a regular number: 90.
Subtraction pairs let us write ninety as XC instead of LXXXX.
3. Write 99 in Roman numerals: XCIX.
XC is ninety and IX is nine, so XCIX correctly equals ninety-nine.
4. The Roman numeral C equals 100.
C stands for one hundred, completing our values up to a full century.
5. Convert 65 to Roman numerals: LXV.
Fifty plus ten plus five equals sixty-five, written as LXV.
6. Write 74 in Roman numerals: LXXIV.
Fifty plus twenty plus four totals seventy-four, giving LXXIV.
7. Read LXXXIX as a number: 89.
Fifty plus thirty plus nine equals eighty-nine when read as LXXXIX.
8. Write the year value 50 as a Roman numeral: L.
L is one of the seven Roman symbols and represents exactly fifty.
9. Convert XCIV to a regular number: 94.
XC equals ninety and IV equals four, so XCIV equals ninety-four.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
LV
→ 55
55
LXX
→ 70
70
LXXXIV
→ 84
84
XCIX
→ 99
99
Splitting Romans into base parts makes adding and subtracting values quick and accurate.