Test: Roman Numerals- 2 - Class 5 MCQ

XXIII = 10 + 10 + 1 + 1 + 1 = 23

To convert the Roman numeral CDXC to its Arabic numeral representation, let's break it down:

• C = 100
• D = 500
• XC = 90

When a smaller numeral precedes a larger one, you subtract the smaller from the larger. So:

• CD = 500 - 100 = 400
• XC = 90

Adding these values together:

• CDXC = 400 + 90 = 490

So, the correct Arabic representation for the numeral CDXC is: 490

The series follows a sequence of Roman numerals: X, XI, XII, XIII. Each numeral increases by one.
X is 10
XI is 11
XII is 12
XIII is 13
Continuing this pattern, the next number is 14, which is represented in Roman numerals as XIV.

The series uses Roman numerals: XX, XXV, _____, XXXV, XL.
Each number in the series increases by five.
Starting with XX (20), adding five gives XXV (25).
Continuing, 25 plus five equals XXX (30).
Thus, the missing number is XXX.

To complete the series, observe the pattern:
L (50)
LX (60)
LXX (70)
Each term increases by 10. Thus, the next term should be LXXX (80), followed by XC (90).

19, 21, 24 and 25.
Except 24 all are odd.

The Roman numeral XV represents the number 15.
To find the missing digit, subtract from 15 to get X, which is 10.
Thus, the calculation is 15 - 5 = 10.
The missing digit is V.

X represents the number 10 in Roman numerals.
XXX represents 30 in Roman numerals.
Adding these together: 10 + 30 = 40.
In Roman numerals, 40 is written as XL.

The number 10425 is represented as X̄CDXXV in Roman numerals.
The bar over X (X̄) indicates 10,000, CD represents 400, XX represents 20, and V represents 5.
Thus, X̄CDXXV = 10,000 + 400 + 20 + 5 = 10425.