# How to Use Models to Decompose Fractions into Unit Fractions?

Using models to decompose fractions into unit fractions can help you visualize the process and better understand the relationships between fractions.

## A Step-by-step guide to using models to decompose fractions into unit fractions

Unit fractions are rational numbers written down as fractions where their numerator is \(1\) and their denominator is a positive integer.

Decomposing fractions into unit fractions can be a helpful way to break down more complex fractions into simpler components. A unit fraction is a fraction where the numerator is 1, and the denominator is a positive integer. Here’s a step-by-step guide to using models to decompose fractions into unit fractions:

### Step 1: Choose the fraction to decompose

Select the fraction you want to decompose. For this example, let’s use \(\frac{3}{4}\).

### Step 2: Create a model

Draw a rectangle or circle to represent the whole. For our example, we’ll draw a rectangle. Divide the rectangle into equal parts based on the denominator of the fraction (in this case, 4 parts). Shade the number of parts equal to the numerator (in this case, shade 3 parts).

### Step 3: Identify unit fractions

Now that you have a visual representation of the fraction, you can see that each part represents a unit fraction. In our example, each part represents \(\frac{1}{4}\), since the rectangle is divided into 4 equal parts.

### Step 4: Write the decomposition

Write the decomposition of the fraction as the sum of the unit fractions that make it up. In our example, we have: \(\frac{3}{4} = \frac{1}{4}+ \frac{1}{4} + \frac{1}{4}\)

### Step 5: Confirm the result

Make sure that the sum of the unit fractions equals the original fraction. In our example, we can see that \(\frac{1}{4} + \frac{1}{4} + \frac{1}{4} = \frac{3}{4}\), confirming that our decomposition is correct.

Keep in mind that there can be multiple valid decompositions for a given fraction. For example, \(\frac{3}{4}\) can also be decomposed into \(\frac{1}{2} + \frac{1}{4}\), as both of these unit fractions sum to the original fraction. Models can help you visualize and understand different ways to decompose fractions into unit fractions.

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