Solve :
(a) $\frac{1}{18}+\frac{1}{18}$
(b) $\frac{8}{15}+\frac{3}{15}$
(c) $\frac{7}{5}-\frac{5}{7}$
(d) $\frac{1}{22}+\frac{21}{22}$
(e) $\frac{12}{15}-\frac{7}{15}$
(f) $\frac{5}{8}+\frac{3}{8}$
(g) $\left(1\right)-\frac{2}{3}$
(h) $\frac{1}{4}+\frac{0}{4}$
(i) $3-\frac{12}{5}$

Solve :
(a) $\frac{1}{18}+\frac{1}{18}$
(b) $\frac{8}{15}+\frac{3}{15}$
(c) $\frac{7}{5}-\frac{5}{7}$
(d) $\frac{1}{22}+\frac{21}{22}$
(e) $\frac{12}{15}-\frac{7}{15}$
(f) $\frac{5}{8}+\frac{3}{8}$
(g) $\left(1\right)-\frac{2}{3}$
(h) $\frac{1}{4}+\frac{0}{4}$
(i) $3-\frac{12}{5}$

Solve
(a) $\frac{2}{3}+\frac{1}{7}$
(b) $\frac{3}{10}+\frac{7}{15}$
(c) $\frac{4}{9}+\frac{2}{7}$
(d) $\frac{5}{7}+\frac{1}{3}$
(e) $\frac{2}{5}+\frac{1}{6}$
(f) $\frac{4}{5}+\frac{2}{3}$
(g) $\left(\frac{3}{4}\right)-\left(\frac{1}{3}\right)$
(h) $\left(\frac{5}{6}\right)-\left(\frac{1}{3}\right)$
(i) $\frac{2}{3}+\frac{3}{4}+\frac{1}{2}$
(j) $\frac{1}{2}+\frac{1}{3}+\frac{1}{6}$
(k) $1\frac{1}{3}+3\frac{2}{3}$
(l) $4\frac{2}{3}+3\frac{1}{4}$
(m) $\left(\frac{16}{5}\right)-\left(\frac{7}{5}\right)$
(n)$\frac{4}{3}-\frac{1}{2}$

$15\frac{7}{8}\times 23\frac{1}{5}+3\frac{4}{5}\times 5\frac{1}{8}=?$

$\frac{5}{8}+\frac{3}{4}-\frac{7}{12}$ is equal to: $\frac{15}{24}$ (b) $\frac{17}{24}$ (c) $\frac{19}{24}$ (d) $\frac{21}{24}$

Simplify :
$(\frac{1}{12}+\left(\frac{-3}{4}\right)+\frac{7}{8})\times (3\frac{2}{5}-\frac{7}{10}+\left(\frac{-2}{15}\right)-10\frac{1}{30})$

Add the following rational numbers:
(i) $\frac{3}{4}\text{and}\frac{-3}{5}$
(ii) $\frac{5}{8}\text{and}\frac{-7}{12}$
,(iii) $\frac{-8}{9}\text{and}\frac{11}{6}$
,((iv) $\frac{-5}{16}\text{and}\frac{7}{24}$
,(v) $\frac{7}{-18}\text{and}\frac{8}{27}$
,(vi) $\frac{1}{-12}\text{and}\frac{2}{-15}$,
(vii) $-1\text{and}\frac{3}{4}$
,(viii) $2\text{and}\frac{-5}{4}$
,(ix) $0\text{and}\frac{-2}{5}$

Evaluate :
$\left(i\right)\frac{-3}{5}+\frac{7}{5}+\frac{-1}{5}$
(ii) $\frac{-12}{7}+\frac{3}{7}+\frac{-2}{7}$
(iii) $\frac{11}{-12}+\frac{3}{-8}+\frac{1}{4}$
(iv)$\frac{-16}{9}+\frac{-5}{12}+\frac{7}{18}$
(v) $-3+\frac{1}{8}+\frac{-2}{5}$
(vi) $\frac{-13}{8}+\frac{5}{16}+\frac{-1}{4}$

Name the property of multiplication shown by each of the following statements:
(i) $\frac{-12}{5}\times \frac{3}{4}=\frac{3}{4}\times \frac{-12}{5}$
(ii) $\frac{-8}{15}\times 1=\frac{-8}{15}$
(iii) $(\frac{-2}{3}\times \frac{7}{8})\times \frac{-5}{7}=\frac{-2}{3}\times (\frac{7}{8}\times \frac{-5}{7})$
(iv) $\frac{-2}{3}\times 0=0$
(v) $\frac{2}{5}\times (\frac{-4}{5}+\frac{-3}{10})=(\frac{2}{5}\times \frac{-4}{5})+(\frac{2}{5}\times \frac{-3}{10})$