To solve $3 + (-2)$ using the number line, follow these steps:

1. Locate the number 3: Start at 3 on the number line.

2. Move 2 units to the left: Since we are adding $-2$, you need to move 2 units to the left from 3.

   • From 3, move 1 unit left to get to 2.
   • Move another 1 unit left to get to 1.

So, after moving two steps to the left, you end up at 1.

Thus, $3 + (-2) = 1$.

Would you like a more detailed explanation or have any other questions?

Here are 5 related questions:

1. How would you solve $-5 + 7$ using a number line?
2. What happens when you add a positive number to a negative number on the number line?
3. How would you subtract a negative number, like $4 - (-3)$?
4. Can you explain the concept of "moving to the left" and "moving to the right" on the number line?
5. What is the result of $6 + (-9)$ using a number line?

Tip: When adding negative numbers, always move to the left on the number line!