(1.742x4.2×0.38)x0.125简便计算?
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(1.742·4.2·0.38)
·0.125
=2·0.871·2·2.1
·2·0.19·0.125
=8·0.125·0.871·2.1
·0.19
=1·0.871·2.1·0.19
=1.8291×0.19
=0.347529
·0.125
=2·0.871·2·2.1
·2·0.19·0.125
=8·0.125·0.871·2.1
·0.19
=1·0.871·2.1·0.19
=1.8291×0.19
=0.347529
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