用科学记数法表示下列各数
(1)300135=______
(2)0.0031238=______
(3)-390.345=______
(4)-0.00003586=______
(5)-0.00000000918=______
(6)0.0000000105=______.
网友回答
解:(1)300135=3.00135×105;
(2)0.0031238=3.1238×10-3;
(3)-390.345=-3.90345×102;
(4)-0.00003586=-3.586×10-5;
(5)-0.00000000918=-9.18×10-9;
(6)0.0000000105=1.05×10-8.
故