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0.8888×0.3+0.1111×5.6的简便计算
人气:367 ℃ 时间:2020-03-29 22:50:06
解答
0.8888×0.3+0.1111×5.6
=0.8888×0.3+0.1111×8X0.7
=0.8888X(0.3+0.7)
=0.8888
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