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

Roman numerals for $498$ is given by:

  1. $COCXVIII$
  2. $COCXIV$
  3. $CDXCVIII$
  4. $COXCVII$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$\Rightarrow$  The given number is $498.$

$\Rightarrow$  In Roman numbers $I=1,\,V=5,\,X=10,\,C=100$ and $D=500$.
$\Rightarrow$  $498=400+90+8$      [ Breaking the number into place value of subgroups ]
$\Rightarrow$  $400=500-100=D-C=CD$
$\Rightarrow$  $90=100-10=C-X=XC$
$\Rightarrow$  $8=5+1+1+1=V+I+I+I=VIII$
$\Rightarrow$  Now adding all the Roman numeral.
$\therefore$   $498=400+90+8=CD+XC+VIII=CDXCVIII$
$\therefore$   Roman numerals for 498 is $CDXCVIII.$

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

Roman numeral for the greatest three digit number is ___________.

  1. IXIXIX

  2. CMXCIX

  3. CMIXIX

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

Consider the $3$ digit largest number in roman.


The largest $3$ digit number is$999$.


Let's convert that into Roman numerals,


$M=100$,$D=500$,X=100$,$X=10$,$V=5$ and $I=1$.

$900 = CM$

$90 = XC$

$9 = IX$

Therefore, $999 = CMXCIX$

 

Hence, this is the answer.

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

In the Roman numeral, I can be subtracted from:

  1. V and X

  2. M only

  3. V only

  4. none
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Subtraction Rule:
Writing a smaller number to the left of a larger number means that the smaller number has to be subtracted from the larger number. The symbol 1 can be used for subtraction from V and X only. The symbol X can be subtracted only from L and C.

Hence, the answer is V and X.