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98.1*0.01+5*9.81+0.049*981
人气:273 ℃ 时间:2020-02-04 11:27:27
解答
原式
=981×0.001+981×0.05+981×0.049
=981×(0.001+0.05+0.049)
=981×0.1
=98.1

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