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0.67×10.1-6.7.简便计算
人气:370 ℃ 时间:2020-06-27 09:14:51
解答
0.67×10.1-6.7
=0.67×10.1-0.67×10
=0.67×(10.1-10)
=0.67×0.1
=0.067
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