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Roman numeral quest: read XLIX, write 94.

Play Roman Numeral Quest

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Learn what I, V, X, L, C, D and M mean, when to subtract (IV, IX, XL, XC) and how to write any number up to 399 and beyond. The questions get harder as your SmartScore climbs.

Ages 7+
5–10 min
🔊 Sound
Roman numerals
place value
reading symbols
Free · no sign-up

How to play Roman Numeral Quest

Choose a skill: numerals to numbers, numbers to numerals, the rules, or adding in Roman numerals.
Answer each question. Right answers raise your SmartScore, and every answer comes with a short explanation.
The questions move from I to XX, then to 99, then to the hundreds.
Reach 100 to master a skill.

Tips and strategy

Read from left to right: if a smaller symbol comes before a bigger one, subtract it (IV = 5 − 1 = 4).
Only I, X and C can be taken away, and only from the next one or two bigger symbols: IV, IX, XL, XC, CD, CM.
Write a number one place at a time: 94 = 90 + 4 = XC + IV = XCIV.

What you'll learn

Roman numerals use seven letters for numbers. You still see them on clocks, in film credits, on buildings and in book chapters. This game turns the rules into practice with instant feedback.

Quick reference: 1 to 20

Number	Roman numeral
1	I
2	II
3	III
4	IV
5	V
6	VI
7	VII
8	VIII
9	IX
10	X
11	XI
12	XII
13	XIII
14	XIV
15	XV
16	XVI
17	XVII
18	XVIII
19	XIX
20	XX

Tens, hundreds and thousands

10 = X
20 = XX
30 = XXX
40 = XL
50 = L
60 = LX
70 = LXX
80 = LXXX
90 = XC
100 = C
500 = D
1000 = M

For a full chart see Roman numerals from 1 to 100. Practise the maths behind it with Roman numerals practice for Grade 4.

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FAQ

Roman Numeral Quest: questions

What is XL in Roman numerals?

XL is 40: X (10) placed before L (50) means 50 minus 10.

What does XC mean?

XC is 90: X (10) placed before C (100) means 100 minus 10.

How do you write 94 in Roman numerals?

94 is 90 + 4, which is XC + IV, written XCIV.

Why is 4 written IV and not IIII?

Roman numerals avoid repeating a symbol more than three times, so 4 is written as 5 minus 1: IV. (Some old clock faces do use IIII.)

What is the biggest number the game uses?

The adaptive questions go up to 399, and the rules questions include numerals such as MCMXC (1990) and MMXXVI (2026).

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