Tag: maths

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Questions Related to maths

Multiple choice maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

The equation for the statement; 'Half of a number added to $10$ is $15$' is __________.

  1. $\dfrac {x}{2} = 10 + 5$
  2. $\dfrac {x}{2} + 10 = 15$
  3. $\dfrac {x}{2} = 15 + 10$
  4. $\dfrac {x}{2} = 10 + 15$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let, the number be $x$
Half of a number $=$ $\dfrac{x}{2}$
Therefore, the required equation is $\dfrac{x}{2}$ $+10 = 15$.

Multiple choice maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

Kapil bought some packets of pens. He bought one packet containing $5$ pens and $n$ packets containing $2$ pens each. Which of the following expressions could be used to find the total number of pens that Kapil bought ? 

  1. $7n$
  2. $10n$
  3. $5 + 2n$
  4. $2 + 5n$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Number of packets bought $= 1 + n$

Given that, 
Single packet has $5$ pens and $n$ packets have $2$ pens each
$\therefore$ Total number of pens in $n$ packets $= 2n$

$\therefore$ Total number of pens bought by Kapil $= 2n + 5$

Multiple choice maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

Anu had 6 pairs of shoes. She let Mohit borrow $x$ pairs of shoes, and then she had 4 pairs left. Which equation model shows this solution ? 

  1. $6 - x = 4$
  2. $6 + x = 4$
  3. $6x = 4$
  4. $4x = 6 $
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Number of pair of shoes Anu had$=6$

Number of pair of shoes Anu has now, after giving $x$ number of pairs to Mohit$=6-x$
Now, in the question, it is given that Anu has $4$ pairs of shoes.
Thus, $6-x=4$ will satisfy the solution for the given problem.

Multiple choice maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

Jaya's score in Mathematics is $30$ more than two third of her score in English. If her score in English is $x$, find her score in Mathematics.

  1. $\dfrac {2}{3}(x + 30)$
  2. $\dfrac {2x}{3} + 30$
  3. $\dfrac {2x}{3} - 30$
  4. $30 - \dfrac {2x}{3}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Given: Jaya's score in English $=x$

Jaya's score inMathematics $=30+ \dfrac{2}{3}x$
                                               $=\dfrac{2x}{3}+30$

Multiple choice maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

Preeti travelled $3x$ km distance by walk, $9y$ km by cycle and $5$ km by bus. The total distance covered by Preeti is ____________.

  1. $(3x - 9y + 5)$ km
  2. $(3x + 9y + 5) $ km
  3. $(3x - 9y - 5) $ km
  4. $(9x + 3y - 5) $ km
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Distance covered by walk $=$ $3x$ km

Distance covered by cycle $=$ $9y$ km
Distance covered by bus $=$ $5$ km
Therefore, total distance covered by Preeti $=$ $(3x+9y+5)$ km.

Multiple choice maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

Meera bought packs of trading cards that contain $10$ cards each. She gave $7$ cards to her friend.
$x =$ Number of packs of trading cards
Which expression shows the number of cards left with Meera?

  1. $10x - 7$
  2. $7x - 8$
  3. $5 - 10x$
  4. $8 - 5x$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Number of cards in 1 pack $= 10$

Number of cards in $x$ packs $=10x$
Number of cards given to friend $=7$
Number of cards left with Meera $=10x-7$