Tag: roman numbers and numbers upto hundred

Quizzes (1) Questions (93)

Questions Related to roman numbers and numbers upto hundred

Multiple choice roman numbers and numbers upto hundred roman numerals knowing our numbers maths

The product obtained when $13$ is multiplied by $7$(in roman number ) is 

  1. XXCI

  2. LXI

  3. XCI

  4. CI
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
 $13\times 7=91$
Break the number $91$ (decompose it) into place value subgroups: 
$91 = 90 + 1;$

Convert each subgroup: $90 = 100 - 10 => C - X = XC; 1 = I;$

Wrap up the Roman numeral: 
$91 = 90 + 1 = XC + I = XCI;$
$ XCI$ is a group of numerals in additive and subtractive notation which will be $91.$

So option C is the correct answer.
Multiple choice roman numbers and numbers upto hundred roman numerals knowing our numbers maths

IX + XV + XX = ______

  1. 45

  2. 35

  3. 44

  4. 40
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Roman numerals are represented by the following letters:

I = 1

V = 5

X = 10

L = 50

C = 100

D = 500

M = 1000

If a numeral is followed by another numeral of lower denomination, the two are added together;

if it is preceded by one of lower denomination, the smaller numeral is subtracted from the greater.

 

9 + 15 + 20 = 44

Multiple choice roman numbers and numbers upto hundred roman numerals knowing our numbers maths

The number of matchsticks that can be used to write 39 in roman system are:

  1. 8

  2. 9

  3. 3

  4. 6
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Roman numerals are represented by the following letters:

I = 1

V = 5

X = 10

L = 50

C = 100

D = 500

M = 1000

If a numeral is followed by another numeral of lower denomination, the two are added together;

if it is preceded by one of lower denomination, the smaller numeral is subtracted from the greater. 


XXXIX = 10+10+10+10-1 = 39
$\therefore$ Number of matchsticks required would be 9.