To express 0.20 as a fraction, follow these steps:
1. **Understand the Decimal**: 0.20 is the same as 20 hundredths.
2. **Write as a Fraction**: Since 0.20 represents 20 hundredths, you can write it as 20/100.
3. **Simplify the Fraction**: To simplify 20/100, find the greatest common divisor (GCD) of 20 and 100. The GCD of 20 and 100 is 20.
4. **Divide Both Numerator and Denominator by the GCD**: Divide 20 by 20 to get 1, and divide 100 by 20 to get 5.
5. **Final Fraction**: The simplified form of 20/100 is 1/5.
So, 0.20 expressed as a fraction is **1/5**.