Question

Which of the following number line(s) represent(s) the sum $4+(-5)?$

• A.
• B.
• C. (a) and (b) above
• D. None of the above

Answer 1

The correct option is B

$\underset{–}{\text{Need to find:}}4+(-5)$ using a number line

$\underset{–}{\text{Step - 1:}}$ Start at zero and move $4$ units to the right of it to arrive at $4$ as depicted in the below figure.


$\underset{–}{\text{Step - 2:}}$ The second number is $-5$ that is negative. So, we need to move $5$ units to the left of $4$, and we arrive at $-1$ as shown below.


Therefore, $4+(-5)=-1$

$\therefore$ Option (b.) is the correct one.