Solve: (-10) + (-3) + 4 + (-12) - Adding Multiple Positive and Negative Numbers

Begin by observing the first exercise:

$(-10)+(-3)$

We will locate the number minus 10 on the number line, and move three steps to the left, where each step represents one whole number:

We reached the number minus 13.

Obtaining the following exercise:

$(-13)+4+(-12)=$

The next exercise is:

$(-13)+4$

Locate the number minus 13 on the number line, and move four steps to the right where each step represents one whole number:

We reached the number minus 9.

Obtaining the following exercise:

$(-9)+(-12)=$

Locate the number minus 9 on the number line, and move twelve steps to the left where each step represents one whole number:

We reached the number minus 21.