• # question_answer 9)                 Express the following numbers in usual form:                 (i) $3.02\times {{10}^{-6}}$                       (ii) $4.5\times {{10}^{4}}$                          (iii) $3\times {{10}^{-8}}$                                (iv) $1.0001\times {{10}^{9}}$ (v) $5.8\times {{10}^{12}}$                        (vi) $3.61492\times {{10}^{6}}$

(i) $3.02\times {{10}^{-6}}$                 $3.02\times {{10}^{-6}}$$=\frac{3.02}{{{10}^{6}}}$ $=\frac{3.02}{1000000}$                             $=0.00000302$ (ii) $4.5\times {{10}^{4}}$ $4.5\times {{10}^{4}}$$=4.5\times 10000$ (iii) $3\times {{10}^{-8}}$ $3\times {{10}^{-8}}\,=\frac{3}{{{10}^{8}}}$ $=\frac{3}{100000000}$ = 0.00000003 (iv) $1.0001\times {{10}^{9}}$ $1.0001\times {{10}^{9}}$$=1.0001\times 1000000000$ $=1000100000$ (v) $5.8\times {{10}^{12}}$ $5.8\times {{10}^{12}}$$=5.8\times \,1000000000000$ $=58000000000000$ (vi) $3.61492\times {{10}^{6}}$ $3.61492\times {{10}^{6}}$$=3.61492\times 1000000$ $=3614920$