0.75x6.27x4简便计算?
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0.75x6.27ⅹ4
=0.75ⅹ4ⅹ6.27
=3ⅹ6.27
=18.81
=0.75ⅹ4ⅹ6.27
=3ⅹ6.27
=18.81
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0.75×6.27×4
=3²(0.25×2.09)×4
=3²(0.25×4×2.09)
=3²(1×2.09)
=3²(2+0.09)
=9×2+9×0.09
=18+0.0.81
=18.81
=3²(0.25×2.09)×4
=3²(0.25×4×2.09)
=3²(1×2.09)
=3²(2+0.09)
=9×2+9×0.09
=18+0.0.81
=18.81
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