Tag: knowing our numbers

Questions Related to knowing our numbers

The Roman numeral for the greatest two digit number is:

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

  1. IC

  2. LIL

  3. ICCCCD

  4. XCIX

Show answer
Correct Option: D
Explanation:

The largest two digit number is $99$

In roman value, $99$ can be expressed as XCIX.
Hence, the answer is XCIX.

Express "XLIX" in English numeral.

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

  1. $69$

  2. $49$

  3. $89$

  4. $59$

Show answer
Correct Option: B
Explanation:

In Roman numeral form, 

$50 = L$
$\Rightarrow 40 = XL$

Also, $9 = IX$

$\Rightarrow XLIX = 49$

Write 'Ninety- Six' in Roman numerals.

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

  1. $XCVI$

  2. $4XVII$

  3. $XCV$

  4. $XCVII$

Show answer
Correct Option: A
Explanation:

In Roman numeral form, 

$90 = XC$
$6 = VI$

$\Rightarrow$ Ninety-six $= XCVI$

 Roman number representation of $655$ is

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

  1. DCLV

  2. CLV

  3. XXI

  4. ML

Show answer
Correct Option: A
Explanation:

Converting to Roman

 Iteration  Decimalnumber  Highest decimal  Highest roman Tempoaray result 
 $1$  $655$  $500$  $D$  $D$
 $2$   $155$ $100$   $C$  $DC$
 $3$   $55$ $50$  $L$  $DCL$
 $4$   $5$ $5$   $V$  $DCLV$

$655=DCLV$

So option $A$ is correct.

 Numerical form representation of DCCXXII is?

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

  1. 120

  2. 115

  3. 722

  4. 730

Show answer
Correct Option: C
Explanation:
 Iteration  Highest Roman  Highest Numeral  Temporary'Number
 $1$  $D$  $500$  $500$
 $2$  $C$  $100$  $600$
 $3$  $C$  $100$  $700$
 $4$  $X$  $10$  $710$
 $5$  $X$  $10$  $720$
 $6$  $X$  $1$  $721$
 $7$  $I$  $1$  $722$

$DCCXXII=722$

So none of the options are correct

Perform the following operations and write the answer in Roman form  
$17 + (8 - 5) 5$

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

  1. XI

  2. XXXII

  3. XV

  4. XXV

Show answer
Correct Option: B
Explanation:


$17+(8-5)5$

$17+(3)5$
$17+15$
$32$
Converting to roman

|  Iteration |  Decimal     number |  Highest decimal value |  Highest roman numeral | Number  | | --- | --- | --- | --- | --- | |  $1$ |  $32$ |  $10$ |  $X$ |  $X$ | |  $2$ |   $22$ |  $10$ |  $X$ |  $XX$ | |  $3$ |   $12$ |  $10$ |  $X$ |  $XXX$ | |  $4$ |   $2$ |  $1$ |  $I$ |  $XXXI$ | |  $5$ |   $1$ |  $1$ |  $1$ |  $XXXII$ |

 

So option $B$ is correct.

Product of XII and L in numerical form is?

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

  1. 600

  2. 310

  3. 620

  4. 2447

Show answer
Correct Option: A
Explanation:

$XII=12$

$L=50$
$\therefore $ Product $=12\times 50=600$

 Roman number of $2050$ is?

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

  1. CX

  2. LXI

  3. MML

  4. XXII

Show answer
Correct Option: C
Explanation:

Conversion to Roman 

 Iteration  Decimalnumber  Highest decimalvalue  Highest romannumeral  Temporary result
 $1$  $2050$  $1000$  $M$   $M$
 $2$  $1050$   $1000$   $M$   $MM$
 $3$  $50$   $50$   $L$   $MML$

So $2050$ in Roman is $MML$

Perform the given operation and write the answer in numerical form
$XCVI+XIII$

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

  1. $35$

  2. $109$

  3. $24$

  4. $110$

Show answer
Correct Option: B
Explanation:

$XC=90$ 

$V1=6$
$XCVI=96$
$XIII=13$
$XCVI+XIII=69+13=109$
So, option B is correct.

Roman number representation of  $1350$ is?

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

  1. CCXLV

  2. MCCCL

  3. ML

  4. CXII

Show answer
Correct Option: B
Explanation:

Conversion to roman

 Iteration  Decimal number  Highest decimalvalue  Highest romannumeral  Temporary  result
 $1$  $1350$  $1000$  $M$  $M$
  $2$  $350$  $100$  $C$  $MC$
  $3$  $250$  $100$  $C$  $MCC$
  $4$  $150$  $100$  $C$  $MCCC$
  $5$  $50$  $50$  $L$  $MCCCL$

So $1350$ in roman is $MCCCL$