3.1875 as a fraction

Understand the Problem

The question is asking how to express the decimal number 3.1875 as a fraction. To do this, we can convert the decimal part into a fraction and combine it with the whole number part.

Answer

The decimal number 3.1875 can be represented as the fraction $\frac{255}{80}$.
Answer for screen readers

The decimal number 3.1875 can be expressed as the fraction $\frac{255}{80}$.

Steps to Solve

  1. Separate Whole and Decimal Parts

Identify the whole number part and the decimal part of the decimal number 3.1875.

The whole number part is $3$, and the decimal part is $0.1875$.

  1. Convert Decimal to Fraction

Convert the decimal $0.1875$ into a fraction. First, recognize that $0.1875$ can be expressed as:

$$ 0.1875 = \frac{1875}{10000} $$

This is because there are four decimal places.

  1. Simplify the Fraction

Next, simplify the fraction $\frac{1875}{10000}$ by finding the greatest common divisor (GCD) of the numerator and denominator.

The GCD of $1875$ and $10000$ is $125$.

Thus, we divide both the numerator and the denominator by $125$:

$$ \frac{1875 \div 125}{10000 \div 125} = \frac{15}{80} $$

  1. Combine Whole Number and Fraction

Now, combine the whole number part with the simplified fraction:

$$ 3 + \frac{15}{80} $$

We can convert this to an improper fraction:

$$ \frac{3 \cdot 80 + 15}{80} = \frac{240 + 15}{80} = \frac{255}{80} $$

  1. Final Simplification (if needed)

Check if the final fraction can be simplified. The GCD of $255$ and $80$ is $1$, thus:

The fraction $\frac{255}{80}$ is already in its simplest form.

The decimal number 3.1875 can be expressed as the fraction $\frac{255}{80}$.

More Information

Converting decimals to fractions is useful in various mathematical applications. The decimal $0.1875$ represents the fraction $\frac{3}{16}$ when simplified, giving us a clearer understanding of its value in fractional terms.

Tips

  • Not recognizing how to convert the decimal part into a fraction correctly.
  • Forgetting to simplify the fraction before combining it with the whole number.
  • Miscalculating the GCD, leading to incorrect simplifications.

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