To compare the fractions, we need to convert everything to a common denominator or convert them to decimals. Let's convert each fraction to a decimal for clarity.
- \( \frac{1}{2} = 0.5 \)
- \( \frac{1}{5} = 0.2 \)
- \( \frac{1}{7} \approx 0.142857 \)
- \( \frac{1}{10} = 0.1 \)
Now we can see the decimal values:
- \( \frac{1}{2} = 0.5 \)
- \( \frac{1}{5} = 0.2 \)
- \( \frac{1}{7} \approx 0.142857 \)
- \( \frac{1}{10} = 0.1 \)
Among these values, \( \frac{1}{10} \) is the least. Therefore, the least fraction is:
\( \frac{1}{10} \).