Grade 4 Math

Roman numerals

Practise converting ordinary numbers to Roman numerals and reading Roman numerals back to ordinary numbers.

How to solve this

Roman numerals are built from symbols: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000.
When a smaller symbol comes before a larger one, subtract it: IV is 4 and IX is 9.
Convert in place-value chunks: 99 is 90 + 9, so it becomes XC + IX = XCIX.

14 as a Roman numeral

XIV

XL as an ordinary number

99 as a Roman numeral

XCIX

Solve these problems on paper or out loud, then check the answer key. The online practice and the printable worksheet give a new set every time.

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