Write the following number in expanded form:
( i ) 684502
( ii ) 4007185
( iii ) 5807294
( iv ) 50074

Answer

(i) `6 xx 10^(5)+8 xx 10^(4)+4 xx 10^(3)+5 xx 10^(2)+0 xx 10^(1)+2 xx 10^(0)`
(ii) `4 xx 10^(6)+0 xx 10^(5)+7 xx 10^(3)+1 xx 10^(2)+8 xx 10^(1)+5 xx 10^(0)`
(iii) `5 xx 10^(6)+8 xx 10^(5)+0 xx 10^(4)+7 xx 10^(3)+2 xx 10^(2)+9 xx 10^(1)+4 xx 10^(0)`
(iv) `5 xx10^(4)+0 xx 10^(3)+0 xx 10^(2)+7 xx 10^(1)+4 xx 10^(0)`