9.81×0.1+0.5×98.1+0.049×981.-查字典问答网
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  9.81×0.1+0.5×98.1+0.049×981.

  9.81×0.1+0.5×98.1+0.049×981.

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2020-05-2423:46
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潘国华

  9.81×0.1+0.5×98.1+0.049×981

  =9.81×0.1+9.81×5+9.81×4.9,

  =9.81×(0.1+5+4.9),

  =9.81×10,

  =98.1.

2020-05-24 23:48:39
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