Tag: subtraction of directed numbers

Questions Related to subtraction of directed numbers

The additive inverse of $17 $ is:

maths concept of directed numbers and number line subtraction of directed numbers subtraction of integers subtraction of integers on number line

  1. $-17$

  2. $17$

  3. $\dfrac {1}{17}$

  4. $-\dfrac {1}{17}$

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Correct Option: A
Explanation:

The additive inverse of $17$ is $-17$ since $17+(-17)=(-17)+17=0$. Where $0$ is the additive identity.

The sum of two integers is $- 35$. If one of them is 40, then the other is.

maths concept of directed numbers and number line subtraction of directed numbers subtraction of integers subtraction of integers on number line

  1. $5$

  2. $-75$

  3. $75$

  4. $-5$

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Correct Option: B
Explanation:

Let the other number is $x$.

Then according to the problem we have,
$x+40=-35$
or, $x=-35-40$
or, $x=-75$.

The sum of two integers is $-23$. If one of them is $18$, then the other is

maths concept of directed numbers and number line subtraction of directed numbers subtraction of integers subtraction of integers on number line

  1. $-14$

  2. $14$

  3. $41$

  4. $-41$

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Correct Option: D
Explanation:

Let the other number is $x$.

Then according to the problem we have,
$x+18=-23$
or, $x=-23-18$
or, $x=-41$.

When $47$ is subtracted from $- 23$, we get

maths concept of directed numbers and number line subtraction of directed numbers subtraction of integers subtraction of integers on number line

  1. $70$

  2. $24$

  3. $-24$

  4. $-70$

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Correct Option: D
Explanation:

47 is subtracted from −23
$=-23-(47)\=-23-47\=-70$

The greater number in the subtraction is called

maths concept of directed numbers and number line subtraction of directed numbers subtraction of integers subtraction of integers on number line

  1. minuend

  2. difference

  3. subtrahend

  4. none of these

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Correct Option: A

(+76) - (-34) =

maths concept of directed numbers and number line subtraction of directed numbers subtraction of integers subtraction of integers on number line

  1. -110

  2. -42

  3. +110

  4. None of these

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Correct Option: C
Explanation:

(+76)-(-34)=76+34=110

The difference of two numbers is 1,74,325. If the greatest number is 87,65,432 then the smallest number is

maths concept of directed numbers and number line subtraction of directed numbers subtraction of integers subtraction of integers on number line

  1. 85,90,107

  2. 85,91,107

  3. 85,92,107

  4. 85,19,107

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Correct Option: B

(-30) - (+8) =

maths concept of directed numbers and number line subtraction of directed numbers subtraction of integers subtraction of integers on number line

  1. +38

  2. -38

  3. -22

  4. None of these

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Correct Option: B
Explanation:

(-30)-(+8)=-30-8=-38

(-12) - (-6) =

maths concept of directed numbers and number line subtraction of directed numbers subtraction of integers subtraction of integers on number line

  1. -6

  2. -18

  3. +6

  4. None of these

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Correct Option: A
Explanation:

(-12)-(-6)=-12+6=-6

$-7-(-8)=$

maths concept of directed numbers and number line subtraction of directed numbers subtraction of integers subtraction of integers on number line

  1. $15$

  2. $-15$

  3. $1$

  4. $-1$

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Correct Option: C
Explanation:

Given that 

We have to find the  value of given expression

$-7-(-8)$

we know that $(-) \times (-) = +$

and  $(+) \times (-) = -$

$=-7+8$

$=1$
So option $C $ is correct