\( \begin{array}{lll}\text { (a) } \frac{1}{5}+\frac{1}{3} \times \frac{1}{2} & \text { (b) } \frac{2}{3}-\frac{1}{3} \div \frac{1}{2} & \text { (c) } \frac{4}{3}+\frac{2}{9}+\frac{3}{4} \\ \text { (d) } \frac{3}{5}-\left(\frac{2}{3}-\frac{1}{3}\right) & \text { (c) } 2 \frac{3}{4}-1 \frac{1}{2} \times 1 \frac{2}{3} & \text { (f) } 2 \frac{1}{4}+13 \frac{1}{2}-2 \\ \text { (8) } 2 \frac{1}{3} \times\left(2 \frac{5}{6}-1 \frac{2}{3}\right) & \text { (h) } \frac{7}{8}+\left(\frac{1}{2}+2 \frac{1}{8}\right) & \text { (i) } \frac{2}{3}+\frac{1}{2} \times\left(\frac{1}{6}-\frac{1}{4}\right)-\frac{1}{8} \\ \text { (i) } 3 \frac{1}{5}+\left(\frac{2}{5}\right)^{2} & \text { (k) } 3 \frac{1}{2} \times 2-\left(\frac{1}{2}\right)^{2} & \text { (l) } \sqrt{1+5 \times\left(-\frac{1}{2}\right)^{2}} \\ \text { (m) } \sqrt[3]{-\frac{27}{8}}+\left(-2-\left(-\frac{1}{2}\right)^{2}\right) & \text { (n) } \frac{3 \frac{1}{4}+\left(1 \frac{1}{2}\right)^{2}}{4 \frac{1}{8}+1 \frac{1}{2}} & \end{array} \)