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3.8*43.7+4.12*38+151*0.38 简算!
人气:411 ℃ 时间:2020-04-24 17:07:55
解答
3.8×43.7+4.12×38+151×0.38
=38×4.37+38×4.12+38×1.51
=38×﹙4.37+4.12+1.51﹚
=38×10
=380
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