0.888×0.6+0.111×4.4+0.444×2怎么简便?

发布网友 发布时间：2024-10-23 22:57

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热心网友 时间：2024-10-26 19:15

因为0.888×0.6=0.444×2×0.6=0.444×1.2，0.111×4.4=0.111×4×1.1=0.444×1.1
所以原式等于0.444×1.2+0.444×1.1+0.444×2，运用乘法分配律逆运算有0.444×（1.2+1.1+2）=1.9092

热心网友 时间：2024-10-26 19:16

0.888x0.6+0.111x4.4+0.444x2
=0.444x(2x0.6)+0.111x4x1.1+0.444x2
=0.444x1.2+0.444x1.1+0.444x2
=0.444x(1.2+1.1+2)
=0.444x4.3
=0.444x(4+0.3)
=0.444x4+0.444x0.3
=1.776+0.1332
=1.9092