Roman Numerals — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. XV + VII written as one Roman numeral equals XXII.
Fifteen plus seven gives twenty-two, written XXII as two tens plus two ones.
2. XX minus VIII equals XII.
Twenty minus eight is twelve, written XII as ten plus two units.
3. Between IX and XI, the larger numeral is XI.
XI equals 11 and IX equals 9, so XI is larger by exactly two.
4. Order from least to greatest: VII, III, X. Greatest is X.
Three is smallest, seven is middle, and ten is greatest in this short list.
5. L + XXV equals LXXV.
Fifty plus twenty-five equals seventy-five, which is written as LXXV in standard Roman form.
6. Super Bowl L was played in 2016. The numeral L stands for 50.
L equals fifty, marking the fiftieth Super Bowl played in early 2016 with great fanfare.
7. Compare: XL < XLV. Use < or >.
Forty is less than forty-five, so XL is less than XLV by five units.
8. XXX - XII equals XVIII.
Thirty minus twelve is eighteen, written XVIII as ten plus five plus three units.
9. Order least to greatest: XIV, IX, XX. Least is IX.
IX is 9, XIV is 14, and XX is 20, so IX is the smallest value.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Super Bowl X
→ 1976
1976
Super Bowl XX
→ 1986
1986
Super Bowl L
→ 2016
2016
Super Bowl LV
→ 2021
2021
Super Bowls are numbered in order: the 10th was 1976, the 20th 1986, the 50th 2016, and the 55th 2021.