Tag: maths

Questions Related to maths

(-12) $\times$ (-3) $\times$ (+4) $\times$ (-6) =

maths multiplication and division of integers division of integers and its properties multiplying and dividing integers multiplication of integers

  1. -144

  2. -908

  3. +864

  4. -864

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Correct Option: D
Explanation:

There are $3$ negative signs . So, the resultant of $3$ multiplications would be negative.


$\therefore (-12) \times (-3) \times(+4) \times (-6) = 36\times 4\times (-6)$
$\Rightarrow 144\times (-6)=-864$

68 $\times$ ____ = -68

maths multiplication and division of integers division of integers and its properties multiplying and dividing integers multiplication of integers

  1. 0

  2. 1

  3. -1

  4. None of these

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Correct Option: C
Explanation:

$68 \times (-1) = -68$

If the dividend and divisor have unlike signs then the quotient will be___.

maths multiplication and division of integers division of integers and its properties multiplying and dividing integers multiplication of integers

  1. Positive

  2. Negative

  3. Zero

  4. none of these

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Correct Option: B
Explanation:

If the dividend and divisor have unlike signs then the quotient will be negative.
For eg- $\displaystyle \frac{-132}{12}=-11$

(-6) $\times$ (-2) =

maths multiplication and division of integers division of integers and its properties multiplying and dividing integers multiplication of integers

  1. -8

  2. +8

  3. -12

  4. +12

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Correct Option: D
Explanation:

-6 $\times$ -2 = + 12

If the dividend and divisor have like signs then the quotient will be_____.

maths multiplication and division of integers division of integers and its properties multiplying and dividing integers multiplication of integers

  1. Positive

  2. Negative

  3. Zero

  4. none of these

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Correct Option: A
Explanation:

If the dividend and divisor have same  signs then the quotient will be positive.
For eg- $\displaystyle \frac{132}{12}=11$ and $\displaystyle \frac {-132}{-12}= 11$

Multiplying a negative integer for odd number of times gives a _______number.

maths multiplication and division of integers division of integers and its properties multiplying and dividing integers multiplication of integers

  1. positive

  2. negative

  3. 0

  4. none of these

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Correct Option: B
Explanation:

(-1) $\times$ (-1) $\times$ (-I) ......odd times = Negative sign

Square of any -ve integer is

maths multiplication and division of integers division of integers and its properties multiplying and dividing integers multiplication of integers

  1. Negative

  2. Positive

  3. 0

  4. none of these

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Correct Option: B
Explanation:

$(-ve\, integer)^2$ = Positive integer

$5. { 63 } \ \times 11$ is equal to

maths multiplication and division of integers division of integers and its properties multiplying and dividing integers multiplication of integers

  1. $62$

  2. $83.\overline { 93 } $

  3. $83.9\overline { 3 } $

  4. $83.93$

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Correct Option: A
Explanation:

$5.\overline { 63 } $
$=5.636363...$
Let $x=5.6363$  (i)
$\therefore 100x=563.6363$  (ii)
Subtracting (i) from (ii) we get,
$=>99x=558$
$=>x=\dfrac{558}{99}$
Now,$5.\overline { 63 }\times 11$
$=>\frac{558}{99}\times 11$
$=>62$

(-32)  $\div$ (-4)=____

maths multiplication and division of integers division of integers and its properties multiplying and dividing integers multiplication of integers

  1. +8

  2. -18

    • 18

  4. -8

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Correct Option: A
Explanation:

Given, $(-32) \div (-4)$

$\therefore (-32)\div (-4)=-32\times (-\displaystyle \frac{1}{4})$
$=8$
$2$ negative signs will give resultant division positive.

Positive of a negative integer is____.

maths multiplication and division of integers division of integers and its properties multiplying and dividing integers multiplication of integers

  1. negative

  2. positive

  3. zero

  4. none of these

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Correct Option: A
Explanation:

Positive of a negative integer is negative. 
Example: $+(-40)= -40$