Question

By addition of integers using a number line, we get the value of $(-3)+7$ as .

Answer 1

$\underset{–}{\text{Need to find:}}(-3)+7$ using a number line

$\underset{–}{\text{Step - 1:}}$ Start at zero and move $3$ units to the left of it to arrive at $-3$ as depicted in the below figure.


$\underset{–}{\text{Step - 2:}}$ The second number is $7$ that is positive. So, we need to move $7$ units to the right of $-3$, and we arrive at $4$ finally as shown below.


Therefore, $(-3)+7=4.$