0.75x4.3+0.035x43-43x0.01用简便方法计算
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0.75x4.3+0.035x43-43x0.01
=0.75×4.3+0.35×4.3-4.3×0.1
=4.3×(0.75+0.35-0.1)
=4.3×1
=4.3
=0.75×4.3+0.35×4.3-4.3×0.1
=4.3×(0.75+0.35-0.1)
=4.3×1
=4.3
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0.75x4.3+0.035x43-43x0.01
=0.75x4.3+0.35x4.3-4.3x0.1
=4.3×(0.75+0.35-0.1)
=4.3×1
=4.3
=0.75x4.3+0.35x4.3-4.3x0.1
=4.3×(0.75+0.35-0.1)
=4.3×1
=4.3
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上面可以改写为 0.75x4.3+0.35x4.3-4.3x0.1=4.3x(0.75+0.35-0.1)
注意小数点
注意小数点
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=43*(0.075+0.035+0.01)
=43*(0.11+0.01)
=43*(0.1)+2*43*0.01
=4.3+0.86
=5.16
=43*(0.11+0.01)
=43*(0.1)+2*43*0.01
=4.3+0.86
=5.16
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0.75x4.3+0.035x43-43x0.01
=0.075x43+0.035x43-43x0.01
=(0.075+0.035-0.01)x43
=0.1x43
=4.3
=0.075x43+0.035x43-43x0.01
=(0.075+0.035-0.01)x43
=0.1x43
=4.3
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