Tag: subtraction of integers

Questions Related to subtraction of integers

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

Addition of integer and its additive inverse is

  1. Zero

  2. double the number

  3. half the number

  4. none

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

Additive inverse of an integer is a number which is of opposite sign and when added to the integer, gives zero.

Thus, Addition of integer and its additive inverse is Zero.

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

Fill in the blanks.
(i) The additive identity of the integers is   .
(ii) The integer which is 8 less than -24 is   Q  .
(iii) Every integer less than zero is   R  .
P    Q     R

  1. 0 $\space$ -32 $\space$ negative
  2. 1 $\space$ -32 $\space$ positive
  3. 0 $\space$ -16 $\space$ negative
  4. 1 $\space$ -32 $\space$ negative
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

(i) Additive identity of the integers is 0.
(ii) 8 less than -24 = -24 - 8 = -32
(iii) Every integer less than zero is negative. 

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

At Shimla,the temperature was $-7^0C$ on Tuesday.It then dipped by $3^0C$ on Wednesday.On Thursday,it rose by $6^0C$.What was the temperature of Shimla on Wednesday and Thursday respectively?

  1. $-4^0C,-10^0C$
  2. $-10^0C,-4^0C$
  3. $-12^0C,-8^0C$
  4. $-10^0C,-40^0C$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
temperature on Tuesday is= $-7^{0}$
temperature on Wednesday is drop by $3^{0}C$ then temperature on Wednesday is equals to= $-7^{0}C-3^{0}C=-10^{0}C$
Now on Thursday temp. raise by $6^{0}C$ then temp. on Thursday is=$-10^{0}C+6^{0}C=-4^{0}C$ 
hence option $B$ is correct.