Questions: Compare 2/5 and 1/10.

Compare $\frac{2}{5}$ and $\frac{1}{10}$.

Find a common denominator.

The least common denominator (LCD) of 5 and 10 is 10.

Convert $\frac{2}{5}$ to a fraction with denominator 10.

Multiply the numerator and denominator of $\frac{2}{5}$ by 2:
$$\frac{2}{5} = \frac{2 \times 2}{5 \times 2} = \frac{4}{10}.$$

Compare $\frac{4}{10}$ and $\frac{1}{10}$.

Since $4 > 1$, $\frac{4}{10} > \frac{1}{10}$.

$\boxed{\frac{2}{5} > \frac{1}{10}}$

$\boxed{\frac{2}{5} > \frac{1}{10}}$