1. The problem is to express 0.25 as a common fraction. 2. Recall that a decimal can be converted to a fraction by writing it over a power of 10. Since 0.25 has two decimal places, it can be written as \frac{25}{100}. 3. Simplify the fraction by dividing numerator and denominator by their greatest common divisor (GCD), which is 25. 4. Show the simplification step: $$\frac{\cancel{25}}{\cancel{100}} = \frac{1}{4}$$ 5. Therefore, the common fraction equivalent of 0.25 is \frac{1}{4}.