Questions Related to maths

Multiple choice maths how much does it weigh? basic operations with same units operations involving units of length calculations define weight and units of weight

Subtract :
$23.67\ m$ from $1.4\ km$

  1. $116.33$
  2. $1376.33\ m$
  3. $13976.33\ m$
  4. $22.27\ m$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

First we have to convert $km$ into $m$

$1\ \ km=1000\ \ m$
$\Rightarrow 1.4\ \ km=1.4\times1000=1400\ \ m$
Now subtracting both
$1400 \ \ m-23.67\ \ m=1376.33\ \ m$
So option $C$ is correct.

Multiple choice maths how much does it weigh? basic operations with same units operations involving units of length calculations define weight and units of weight

Add $23.456\ m$ and $26.5\ cm$ .

  1. $499.56\ cm$
  2. $49.956\ cm$
  3. $237.16\ cm$
  4. $2372.6\ cm$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
First we have to convert $m$ into $cm$
$1\ \ m=100\ \ cm$
$\Rightarrow 23.456\ \ m=23.456\times100=2345.6\ \ cm$
Now adding both
$2345.6\ \ cm+26.5\ \ cm=2372.6\ \ cm$
None of the options are correct

Multiple choice maths how much does it weigh? basic operations with same units operations involving units of length calculations define weight and units of weight

A pole is painted yellow and black. The yellow part is $1.8\ m$ long and the black is three times longer than yellow part. Find the length of pole.

  1. $5.4\ m$
  2. $7.2\ m$
  3. $3.6\ m$
  4. $none\ of\ these$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Length of yellow Part $=Y=1.8m$

Length of Black Part $=3Y=5.4m=B$
So, Length of Pole $=L=Y+B=1.8+5.4=7.2m$

Multiple choice maths how much does it weigh? basic operations with same units operations involving units of length calculations define weight and units of weight

Rita had $\displaystyle 38\frac { 1 }{ 4 } $ m long rope. She cut it into 5 equal parts. Then the length of each piece will be- 

  1. $\displaystyle 1\frac { 1 }{ 4 } $ m
  2. $\displaystyle 2\frac { 3 }{ 4 } $ m
  3. $\displaystyle 3\frac { 1 }{ 4 } $ m
  4. $\displaystyle 1\frac { 3 }{ 4 } $ m
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Length of the rope $\displaystyle= 8\dfrac { 3 }{ 4 } m\ Number\quad of\quad peices\quad cut\quad =5\ Length\quad of\quad each\quad peice\quad =8\dfrac { 3 }{ 4 } m\div 5=\dfrac { 35 }{ 4 } m\times \dfrac { 1 }{ 5 } \ =\left( \dfrac { 35 }{ 4 } \times \dfrac { 1 }{ 5 }  \right) m=\dfrac { 7 }{ 4 } m=1\dfrac { 3 }{ 4 } m\ \therefore The\quad length\quad of\quad each\quad piece\quad of\quad the\quad rope\quad =1\dfrac { 3 }{ 4 } m.$

Multiple choice maths how much does it weigh? basic operations with same units operations involving units of length calculations define weight and units of weight

If Harry runs $23\ m\ 5\ cm$ and Joy runs $14.37\ m$ from the same starting point, then how far is Joy from Harry.

  1. $8.68\ m$
  2. $9.13\ m$
  3. $86.8\ m$
  4. $91.3\ m$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

We low that $1 m=100 cm$

Hence distance run by Harry $=23 m + 5 cm\=23 m+ \dfrac{5}{100} m\=23.05 m$
Distance run by Joy $=14.37 m$
Distance between them $=23.05 m -14.37 m\=8.68 m$
                                                 

Multiple choice maths decimal numbers comparing and ordering of decimals more or less comparing decimals

Of the numbers 0.16, $\displaystyle \sqrt{0.16}$, $\displaystyle (0.16)^{2}$ and $\displaystyle 0.1\overline{6}$ the least number is

  1. $\displaystyle (0.16)^{2}$
  2. $\displaystyle \sqrt{0.16}$
  3. 0.16

  4. $\displaystyle 0.1\overline{6}$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

0.16 = 0.16
$\displaystyle \sqrt{0.16}=0.4 $  $\displaystyle \Rightarrow 0.0256=\left ( 0.16 \right )^{2}$
$\displaystyle \left ( 0.16 \right )^{2}=0.0256 $  $\displaystyle \Rightarrow 0.0256=\left ( 0.16 \right )^{2}$
$\displaystyle 0.\overline{16}=0.1666....$  $\displaystyle \Rightarrow 0.0256=\left ( 0.16 \right )^{2}$
is the least

Multiple choice maths decimal numbers comparing and ordering of decimals more or less comparing decimals

Which of the following expressions is true?  

  1. 1.3749 < 1.0399

  2. 1.7908 < 1.879

  3. 1.526 < 1.2605

  4. 1.463 < 1.3902

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Option A =1.3749<1.03991.3749<1.0399, it should be 1.3749>1.03991.3749>1.0399

Option B=1.7908<1.8791.7908<1.879, it is true
Option C=1.526<1.26051.526<1.2605 , it should be 1.526>1.26051.526>1.2605
Option D=1.463<1.39021.463<1.3902, it should be1.463>1.39021.463>1.3902
Hence option B is the correct answer