Roman Numerals

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Instructions: Test your ability to read and convert Roman numerals!

1.
What number does the Roman numeral 'X' represent?
A
50
B
5
C
100
D
10
2.
What is the Roman numeral for 50?
A
C
B
M
C
D
D
L
3.
What number does 'XV' represent?
A
20
B
15
C
10
D
5
4.
What number does 'VII' represent?
A
5
B
8
C
7
D
2
5.
How would you write 3 in Roman numerals?
A
I
B
II
C
IV
D
III
6.
What number does 'IV' represent?
A
6
B
9
C
4
D
14
7.
What number does 'XC' represent?
A
190
B
110
C
90
D
40
8.
How would you write 40 in Roman numerals?
A
XL
B
XXXX
C
LC
D
VX
9.
What number does 'LXVI' represent?
A
64
B
66
C
56
D
76
10.
How would you write 99 in Roman numerals?
A
XCVIIII
B
IC
C
XCIX
D
LXLIX
11.
What number does 'CDXLIV' represent?
A
444
B
446
C
454
D
544
12.
How would you write 1999 in Roman numerals?
A
MXMIX
B
MDCDXCIX
C
MCMXCIX
D
MIM
13.
What number does 'MMCDLXXVIII' represent?
A
2678
B
2378
C
2478
D
2578
14.
Which of these is NOT a valid Roman numeral representation?
A
XL
B
VX
C
XIV
D
IX
15.
What number does 'MCMLXIV' represent?
A
1974
B
1964
C
1944
D
1954

Answer Key

Question 1

D. 10

X represents 10 in Roman numerals. It is one of the seven basic symbols used in the system.

Question 2

D. L

L represents 50 in Roman numerals. The seven basic Roman numeral symbols are I (1), V (5), X (10), L (50), C (100), D (500), and M (1000).

Question 3

B. 15

XV equals 15. When a smaller numeral follows a larger one, you add them: X (10) + V (5) = 15.

Question 4

C. 7

VII equals 7. V (5) + I (1) + I (1) = 7.

Question 5

D. III

3 is written as III in Roman numerals — three ones added together.

Question 6

C. 4

IV equals 4. When a smaller numeral precedes a larger one, you subtract: V (5) - I (1) = 4.

Question 7

C. 90

XC equals 90. X (10) before C (100) means subtraction: 100 - 10 = 90.

Question 8

A. XL

40 is written as XL. X (10) before L (50) means subtraction: 50 - 10 = 40. Romans never used four of the same symbol in a row.

Question 9

B. 66

LXVI equals 66. L (50) + X (10) + V (5) + I (1) = 66.

Question 10

C. XCIX

99 is written as XCIX. XC (90) + IX (9) = 99. The subtractive principle only works with specific pairs.

Question 11

A. 444

CDXLIV equals 444. CD (400) + XL (40) + IV (4) = 444.

Question 12

C. MCMXCIX

1999 is written as MCMXCIX. M (1000) + CM (900) + XC (90) + IX (9) = 1999.

Question 13

C. 2478

MMCDLXXVIII equals 2478. MM (2000) + CD (400) + LXX (70) + VIII (8) = 2478.

Question 14

B. VX

VX is not valid. In Roman numerals, V (5) cannot be used as a subtractive prefix. Only I, X, and C can be used subtractively.

Question 15

B. 1964

MCMLXIV equals 1964. M (1000) + CM (900) + LX (60) + IV (4) = 1964.

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