Math

XXXVII, CXXXIX, XXIX, XXVI, LXXX, XL, XI Roman Numerals In Numbers

I will be solving some Roman Numerals examples in this article. Roman numerals are the numbers that were used in ancient Rome, which are in base ten and comprise of Latin alphabet (I, V, X, L, C, D and M)

Basic Roman Numeral

Roman NumeralNumber
I1
V5
X10
L50
C100
D500
M1000

Read: XLII, XLV, XXV, and XCLX Roman Numerals

Basic Roman Numerals Rule

  • If a bigger letter precedes or comes before a smaller letter, the letters are added. For example: VI = 5 +1 = 6, X1 = 10 + 1= 11, LX = 50 + 10 = 60
  • If a smaller letter precedes a bigger letter, the letters are subtracted. For example IV = 5 -1 = 4, IX = 10 – 1= 9, XL = 50- 10 = 40
  • If a letter is repeated 2 or 3 times, they are added. For example: CCC = C + C + C = 100 + 100 + 100 = 300
  • The same letter cannot be used more than three times in succession.

Read: Quantitative reasoning

XXXVII, CXXXIX, XXIX, XXVI, LXXX, XL, XI Roman Numerals

XXXVII Roman Numeral in Number

XXXVII = X + X + X + VII (note X is 10 and VII is 7)

XXXVII = 10 + 10 + 10 + 7 = 37

CXXXIX Roman Numeral in Number

CXXXIX = C + X + X + X + IX (note C is 100 and IX is 9)

The reason why I put IX together is because a smaller number comes before a bigger number

And IX = 10 – 1 = 9

CXXXIX = 100 + 10 + 10 + 10 + 9 = 139

XXIX Roman Numeral in Number

XXIX = X + X + IX = 10 + 10 + 9 = 29

XXVI Roman Numeral in Number

XXVI = X + X + V + I (X is 10, V is 5, and I is 1)

XXVI = 10 + 10 + 5 + 1 = 26

LXXX Roman Numeral in Number

LXXX = L + X + X + X (note L is 50)

LXXX = 50 + 10 + 10 + 10 = 80

XL Roman Numeral in Number

In this case, a smaller number comes before a bigger number. This implies that we are going to subtract the smaller number from the bigger number.

XL = 50 – 10 = 40

XI Roman Numeral in Number

XI = X + I = 10 + 1 = 11

Conclusively, I will make a table to represent the values of all the roman numerals I have discussed.

Roman NumeralsNumber
XXXVII37
CXXXIX139
XXIX29
XXVI26
LXXX80
XL40
XI11

If you have any questions that you will like me to solve on the above topic, kindly drop a comment in the box below.

Read: How to Write MM, MMV, MMVIII Roman Numerals In Number

Bolarinwa Olajire

A tutor with a demonstrated history of working in the education industry. Skilled in analytical skills. Strong education professional with a M. SC focused in condensed matter. You can follow me on Twitter by clicking on the icon below to ask questions.
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