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0.1÷0.02+0.45×0.01简便计算
人气:133 ℃ 时间:2020-06-26 11:11:57
解答
0.1÷0.02+0.45×0.01
=0.01×50×10+0.45×0.01
=0.01×(500+0.45)
=0.01×500.45
=5.0045
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