To solve \(-1.8 - 3.3\) using a number line, you can follow these steps:

1. **Start at \(-1.8\)** on the number line.
2. **Move left** (in the negative direction) by 3.3 units. 

Since you're subtracting a positive number, moving to the left by 3.3 units from \(-1.8\) will take you to:

\[
-1.8 - 3.3 = -5.1
\]

So, the result is \(-5.1\).

### Visual Representation:

- Place \(-1.8\) on the number line.
- Move 3.3 units left, ending at \(-5.1\).

Would you like to explore more details or have any questions?

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Here are 5 related questions:

1. How would you solve \(4.5 - 7.2\) using a number line?
2. What is the result of adding two negative numbers on a number line?
3. How do you subtract a negative number using a number line?
4. Can you explain how to find the difference between \(0\) and a negative number using a number line?
5. How does subtraction of decimals differ from whole numbers on a number line?

**Tip:** When subtracting a positive number on a number line, always move to the left.

Learn how to solve \(-1.8 - 3.3\) using a number line with this detailed step-by-step guide. This problem demonstrates subtraction of decimals on a number line, explaining how to move left from \(-1.8\) by 3.3 units to find the result \(-5.1\). Suitable for students in Grades 4-6.

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