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用科学计数法表示下列数:0.000000001,0.0012,0.000000345,0.0000000108

题目详情
用科学计数法表示下列数:0.000000001,0.0012,0.000000345,0.0000000108
▼优质解答
答案和解析
0.000000001,
=1×10^(-9);
0.0012,
=1.2×10^(-3);
0.000000345,
=3.45×10^(-7);
0.0000000108
=1.08×10^(-8);
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