Answer
$\frac{7}{10}$
Work Step by Step
Start with given expression: $\frac{2}{5}+\frac{3}{10}$
Convert $\frac{2}{5}$ to tenths: $\frac{2}{5}\times\frac{2}{2}=\frac{4}{10}$
Add the terms with like denominators: $\frac{4}{10}+\frac{3}{10}=\frac{7}{10}$
