Question

Without using number line, calculate each of the following:

$(-25)+40$

Answer 1

Finding the sum of $(-25)+40$

Here, both numbers are of unlike signs $\left[+\&-\right]$

So, we subtract the absolute values of both the numbers and give the sign of largest absolute value to the result.

i.e., sign of $40$, which is $"+"$

Since absolute value of a number denotes the distance between zero and that number in a number line.

So,

$$\begin{gathered} \left|-25\right|=25 \\ \left|40\right|=40 \end{gathered}$$

So, $40-25=15$

Hence, the answer is $15$