Simplify:
(i) $\frac{11}{12}÷(\frac{5}{9}\times \frac{18}{25})$

(ii) $(2\frac{1}{2}\times \frac{8}{10})÷(1\frac{1}{2}+\frac{5}{8})$

(iii) $\frac{15}{16}$ of $(\frac{5}{6}-\frac{1}{2})÷\frac{10}{11}$

(iv) $\frac{9}{8}÷\frac{3}{5}$ of $(\frac{3}{4}+\frac{3}{5})$

(v) $\frac{2}{5}÷\{\frac{1}{5}of[\frac{3}{4}-\frac{1}{2}]-1\}$

(vi) $(1\frac{3}{4}\times 3\frac{1}{7})-(4\frac{3}{8}÷5\frac{3}{5})$

Find:

(i) (ii) (iii)

(iv) (v) (vi)

(vii) (viii)

Re-arrange suitably and find the sum in each of the following :

(i)$\frac{11}{12}+\frac{-17}{3}+\frac{11}{2}+\frac{-25}{2}$

(ii)$\frac{-6}{7}+\frac{-5}{6}+\frac{-4}{9}+\frac{-15}{7}$

(iii)$\frac{3}{5}+\frac{7}{3}+\frac{9}{5}+\frac{-13}{15}+\frac{-7}{3}$

(iv) $\frac{4}{13}+\frac{-5}{8}+\frac{-8}{13}+\frac{9}{13}$

(v)$\frac{2}{3}+\frac{-4}{5}+\frac{1}{3}+\frac{2}{5}$

(vi) $\frac{1}{8}+\frac{5}{12}+\frac{2}{7}+\frac{7}{12}+\frac{9}{7}+\frac{-5}{16}$

Find the sum:

(i) (ii) (iii)

(iv) (v) (vi)

(vii)

Solve:

(i) $2-\frac{3}{5}$

(ii) $4+\frac{7}{8}$

(iii) $\frac{3}{5}+\frac{2}{7}$

(iv) $\frac{9}{11}-\frac{4}{15}$

(v) $\frac{7}{10}+\frac{2}{5}+\frac{3}{2}$

(vi) $2\frac{2}{3}+3\frac{1}{2}$

(vii) $8\frac{1}{2}-3\frac{5}{8}$

Fill in the blanks:

$\left(i\right)-4\times \frac{7}{9}=\frac{7}{9}\times$ ___

$\left(ii\right)\frac{5}{11}\times \frac{-3}{8}=\frac{-3}{8}\times$ ___

$\left(iii\right)\frac{1}{2}\times (\frac{3}{4}+\frac{-5}{12})=\frac{1}{2}\times$ ____ $+(\times )\frac{-5}{12}$

$\left(iv\right)\frac{-4}{5}\times \frac{5}{7}\times$___ $=(\frac{-4}{5}\times \frac{5}{7})\times \frac{-8}{9}$