Write the following numbers in standard form:
(i)`0. 4579`
(ii) `0. 000007`
(iii)`0. 000000564`
(iv) `0. 0000021`
(v)`216000000`
(vi) `0. 0000529\ xx\ 10^4`
(vii)`9573\ xx\ 10^(-4)`

Explanation

(i)`0. 4579``=4579xx10^4

(ii) `0. 000007``=7xx10^(-6)`

(iii)`0. 000000564``=564xx10^(-9)`

(iv) `0. 0000021``=21xx10^7`

(v)`216000000``=216xx10^6`

(vi) `0. 0000529\ xx\ 10^4``=529xx10^0`

(vii)`9573\ xx\ 10^(-4)``=9573/10^4`.