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We are asked to find which number line model represents the expression:

\[
\frac{3}{4} + \left(-\frac{1}{4}\right)
\]

To break it down:

1. Start at \( \frac{3}{4} \), which is three-quarters of the way from 0 to 1.
2. From \( \frac{3}{4} \), subtract \( \frac{1}{4} \), which means we move left by \( \frac{1}{4} \).

Let's analyze the number lines:

- **Option A**: It starts at \( \frac{3}{4} \) and moves left by \( \frac{1}{4} \), landing at \( \frac{2}{4} = \frac{1}{2} \).
- **Option B**: This starts at \( \frac{3}{4} \), but moves left by a different amount, not \( \frac{1}{4} \).
- **Option C**: This starts at \( \frac{3}{4} \), but the direction and step sizes are incorrect.

Therefore, **Option A** is correct because it shows the correct movement on the number line that represents the expression \( \frac{3}{4} + \left( -\frac{1}{4} \right) \).

Do you want more details on how to work with number lines or have any questions?

Here are 5 related questions you might find useful:

1. How do you add and subtract fractions on a number line?
2. What is the general rule for moving left or right on a number line when adding positive or negative fractions?
3. How do you represent a subtraction of a fraction as an addition of a negative number?
4. What are some strategies to visualize fractional operations without a number line?
5. How would this problem change if the fractions had different denominators?

**Tip**: Always check the direction (left for subtraction, right for addition) and the distance moved when working with number lines.

Which number line model represents the expression 3/4 + (-1/4)?

Learn how to identify the correct number line model for the expression 3/4 + (-1/4). This math problem covers key concepts such as fraction addition and subtraction, and visualizing negative numbers on a number line. Suitable for students in Grades 5-7.

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