Solve 10 + (-12): Integer Addition on a Number Line

Question

Solve the following problem using the number line below:

$10+(-12)=$

00:06 Let's solve this problem together.

00:09 Our first number is positive.

00:12 A positive number moves us to the right on the number line.

00:16 So, from zero, let's take ten steps to the right.

00:25 Now, let's look at a negative number.

00:29 A negative number moves us to the left on the number line.

00:34 We'll take twelve steps to the left.

00:43 And that's how we solve this! Great job!

We will locate the number 10 on the number line, then move 12 steps to the left from it (since minus 12 is less than zero):

We can see that we have reached the number minus 2.

$-2$