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75乘0.56+32乘0.44-5.6乘4.3简便计算
人气:160 ℃ 时间:2019-11-08 14:20:28
解答
75×0.56+32×0.44-5.6×4.3
=75×0.56-5.6×4.3+32×0.44
=75×0.56-0.56×43+32×0.44
=(75-43)×0.56+32×0.44
=32×0.56+32×0.44
=32×(0.56+0.44)
=32×1
=32
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