This Grade 4 worksheet introduces the subtraction rule using IV, IX, XL, and XLIX. Fill-in items convert numbers up to 49 and apply the rule for four and nine. A matching activity links Roman pairs to their Arabic values so students see the pattern repeat at different scales. Grade 4 learners discover why IIII is replaced with IV and why XXXX becomes XL, building stronger fluency before moving on to numbers up to one hundred.
Style:
Roman Numerals
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Use the subtraction rule: 4 in Roman numerals is IV.
2. Write 9 in Roman numerals using the rule: IX.
3. The Roman numeral XL stands for 40.
4. Convert XXVII to a number: 27.
5. Write 14 in Roman numerals: XIV.
6. Read XLII as a regular number: 42.
7. Write 19 in Roman numerals: XIX.
8. The Roman numeral L equals 50.
9. Convert 49 to Roman numerals: XLIX.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
IV
→ 4
4
IX
→ 9
9
XL
→ 40
40
XLIX
→ 49
49
Roman Numerals
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) Use the subtraction rule: 4 in Roman numerals is IV.
2) Write 9 in Roman numerals using the rule: IX.
3) The Roman numeral XL stands for 40.
4) Convert XXVII to a number: 27.
5) Write 14 in Roman numerals: XIV.
6) Read XLII as a regular number: 42.
7) Write 19 in Roman numerals: XIX.
8) The Roman numeral L equals 50.
9) Convert 49 to Roman numerals: XLIX.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
IV
→ 4
4
IX
→ 9
9
XL
→ 40
40
XLIX
→ 49
49
Ready to Practice?
Complete each section carefully.
10 Questions
10-15 minutes
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