Decimals Demystified: From Standard Form to Expanded Form with Fractions

Converting Decimals Between Standard and Expanded Form Using Fractions

Example 1:

Standard Form: \(4.25\)

Expanded Form with Fractions:

– The digit \(4\) is in the ones place: \(4\)

– The digit \(2\) is in the tenths place, which can be represented as \(\frac{2}{10}\) or \(1/5\).

– The digit \(5\) is in the hundredths place, which can be represented as \(\frac{5}{100}\) or \(1/20\).

Combine these values: \(4 + \frac{1}{5} + \frac{1}{20}\)

Detailed Answer:

The expanded form of \(4.25\) using fractions is \(4 + \frac{1}{5} + \frac{1}{20}\).

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Example 2:

Standard Form:** \(3.08\)

**Expanded Form with Fractions:**

– The digit \(3\) is in the ones place: \(3\)

– The digit \(0\) is in the tenths place, which is \(0\).

– The digit \(8\) is in the hundredths place, which can be represented as \(\frac{8}{100}\) or \(2/25\).

Combine these values: \(3 + \frac{2}{25}\)

Detailed Answer:

The expanded form of \(3.08\) using fractions is \(3 + \frac{2}{25}\).

Remember using fractions in the expanded form of decimals offers a unique perspective on the value each digit represents. It bridges the gap between decimals and fractions, two essential concepts in mathematics. With practice, you’ll find it easy to switch between these representations seamlessly!

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Practice Questions:

1. Convert the decimal \(1.75\) into its expanded form using fractions.

2. Convert the decimal \(2.04\) into its expanded form using fractions.

3. Convert the expanded form \(5 + \frac{1}{4}\) into its standard form.

4. Convert the expanded form \(6 + \frac{3}{10}\) into its standard form.

5. Convert the decimal \(7.12\) into its expanded form using fractions.

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Answers:

1. \(1 + \frac{3}{4}\)

2. \(2 + \frac{1}{25}\)

3. \(5.25\)

4. \(6.3\)

5. \(7 + \frac{1}{10} + \frac{1}{50}\)

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