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Just as we can add, subtract and multiply numbers, so can we do the same with Roman numerals. Let’s look at the following example:

III - II = ?

III is the same as 1 + 1 + 1 = 3

II is the same as 1 + 1 = 2

III - II then is the same as 3 - 2 = 1

“1” in Roman numerals is “I” so the complete answer is: III - II = I

Now let’s look at another example:

IX x IV = ?

IX is the same as 10 - 1 = 9

IV is the same as 5 - 1 = 4

IX x IV then is the same as 9 x 4 = 36

“36” in Roman numerals is XXXVI so the complete answer is: IX x IV = XXXVI

Some helpful hints to remember are:

5 = V

10 = X

50 = L

100 = C

500 = D

1000 = M

1.

D + L + M = ?

DML

DLM

MDL

MLD

2.

DLIX + MDC = ?

MCLIX

MMCLIX

CMLIX

DMLIX

DLIX + MDC = ?

D is the same as 500

L is the same as 50

IX is the same as 9

M is the same as 1000

D is the same as 500

C is the same as 100

DLIX is the same as 500 + 50 + 9 = 559

MDC is the same as 1000 + 500 + 100 = 1600

559 + 1600 = 2159

“2159” in Roman numerals is “MMCLIX.” So the complete answer is: DLIX + MDC = MMCLIX. Answer (d) is the correct answer

D is the same as 500

L is the same as 50

IX is the same as 9

M is the same as 1000

D is the same as 500

C is the same as 100

DLIX is the same as 500 + 50 + 9 = 559

MDC is the same as 1000 + 500 + 100 = 1600

559 + 1600 = 2159

“2159” in Roman numerals is “MMCLIX.” So the complete answer is: DLIX + MDC = MMCLIX. Answer (d) is the correct answer

3.

M x III + LIV = ?

MMCMIV

MIIILIV

MMLIV

MMMLIV

M x III + LIV = ?

M is the same as 1000

I is the same as 1

L is the same as 50

IV is the same as 4

M x III is the same as 1000 x 3 = 3000

LIV is the same as 50 + 4 = 54

3000 + 50 + 4 = 3054

“3054” in Roman numerals is “MMMLIV.” Answer (d) is the correct answer

M is the same as 1000

I is the same as 1

L is the same as 50

IV is the same as 4

M x III is the same as 1000 x 3 = 3000

LIV is the same as 50 + 4 = 54

3000 + 50 + 4 = 3054

“3054” in Roman numerals is “MMMLIV.” Answer (d) is the correct answer

4.

LXXX + LXXX = ?

LLXXXXX

CLX

LLXL

CXL

LXXX + LXXX = ?

L is the same as 50

X is the same as 10

XXX is the same as 10 + 10 + 10 = 30

50 + 30 = 80

80 + 80 = 160

“160” in Roman numerals is “CLX.” Answer (d) is the correct answer

L is the same as 50

X is the same as 10

XXX is the same as 10 + 10 + 10 = 30

50 + 30 = 80

80 + 80 = 160

“160” in Roman numerals is “CLX.” Answer (d) is the correct answer

5.

DCC - LIX + XXIX = ?

DCXII

CDLXX

DCLXX

CCCCCCXXXXXXX

DCC - LIX + XXIX = ?

D is the same as 500

C is the same as 100

L is the same as 50

IX is the same as 9

X is the same as 10

DCC is the same as 500 + 100 + 100 = 700

LIX is the same as 50 + 9 = 59

XXIX is the same as 10 + 10 + 9 = 29

700 - 59 = 641 + 29 = 670

“670” in Roman numerals is “DCLXX.” “D” equals 500, “C” equals 100, “L” equals 50 and “XX” equals 10 + 10 = 20, giving us 500 + 100 + 50 + 20 = 670. Answer (d) is the correct answer

D is the same as 500

C is the same as 100

L is the same as 50

IX is the same as 9

X is the same as 10

DCC is the same as 500 + 100 + 100 = 700

LIX is the same as 50 + 9 = 59

XXIX is the same as 10 + 10 + 9 = 29

700 - 59 = 641 + 29 = 670

“670” in Roman numerals is “DCLXX.” “D” equals 500, “C” equals 100, “L” equals 50 and “XX” equals 10 + 10 = 20, giving us 500 + 100 + 50 + 20 = 670. Answer (d) is the correct answer

6.

LI x VIII = ?

CDVIII

LVIV

LVIIII

CCCCVIII

LI x VIII = ?

LI is the same as 51

VIII is the same as 8

51 x 8 = 408

“408” in Roman numerals is “CDVIII.” The letter “C” equals “100.” The letter “D” equal “500”. When the letter “C” comes before the letters “D” or “M” is tells you that you must subtract the letters so “CD” is the same as 500 - 100 = 400. “V” is the number 5 and “III” is 1 + 1 + 1 = 3 so 5 + 3 = 8. So the complete answer is: LI x VIII = CDVIII. Answer (d) is the correct answer

LI is the same as 51

VIII is the same as 8

51 x 8 = 408

“408” in Roman numerals is “CDVIII.” The letter “C” equals “100.” The letter “D” equal “500”. When the letter “C” comes before the letters “D” or “M” is tells you that you must subtract the letters so “CD” is the same as 500 - 100 = 400. “V” is the number 5 and “III” is 1 + 1 + 1 = 3 so 5 + 3 = 8. So the complete answer is: LI x VIII = CDVIII. Answer (d) is the correct answer

7.

III x VI x V = ?

XC

XXXIII

XL

LXXXX

III x VI x V = ?

III is the same as 3

VI is the same as 6

V is the same as 5

3 x 6 = 18 x 5 = 90

“90” in Roman numerals is “XC.” When a single “X” comes before the letters “L” and “C” it tells you that you need to subtract. So “XC” is the same as 100 - 10 = 90. Answer (d) is the correct answer

III is the same as 3

VI is the same as 6

V is the same as 5

3 x 6 = 18 x 5 = 90

“90” in Roman numerals is “XC.” When a single “X” comes before the letters “L” and “C” it tells you that you need to subtract. So “XC” is the same as 100 - 10 = 90. Answer (d) is the correct answer

8.

XL + VI + CIV = ?

CLIX

XCIX

LCIX

CL

XL + VI + CIV = ?

X is the same as 10

L is the same as 50

V is the same as 5

I is the same as 1

C is the same as 100

IV is the same as 4

XL is the same as 50 - 10 = 40

VI is the same as 5 + 1 = 6

CIV is the same as 100 + 5 - 1 = 104

40 + 6 + 104 = 150

“150” in Roman numerals is “CL.” Answer (d) is the correct answer

X is the same as 10

L is the same as 50

V is the same as 5

I is the same as 1

C is the same as 100

IV is the same as 4

XL is the same as 50 - 10 = 40

VI is the same as 5 + 1 = 6

CIV is the same as 100 + 5 - 1 = 104

40 + 6 + 104 = 150

“150” in Roman numerals is “CL.” Answer (d) is the correct answer

9.

XXV - XIV = ?

XXI

VI

XXXI

XI

XXV - XIV = ?

XXV is the same as 25

XIV is the same as 14

25 - 14 = 11

“11” in Roman numerals is “XI” so the complete answer is: XXV - XIV = XI. Answer (d) is the correct answer

XXV is the same as 25

XIV is the same as 14

25 - 14 = 11

“11” in Roman numerals is “XI” so the complete answer is: XXV - XIV = XI. Answer (d) is the correct answer

10.

X + III + VI = ?

XVIX

XIIIVI

XIX

XVIII

X + III + VI = ?
X is the same as 10

III is the same as 3

VI is the same as 6

10 + 3 + 6 = 19

“19” in Roman numerals is “XIX” so the complete answer is: X + III + VI = XIX. Answer (c) is the correct answer

III is the same as 3

VI is the same as 6

10 + 3 + 6 = 19

“19” in Roman numerals is “XIX” so the complete answer is: X + III + VI = XIX. Answer (c) is the correct answer

D is the same as 500

L is the same as 50

M is the same as 1000

500 + 50 + 1000 = 1550

“1550” in Roman numerals is “MDL.” Answer (d) is the correct answer