3.6x42.3x3.75-12.5x0.423x28五年级简算

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3.6x42.3x3.75-12.5x0.423x28五年级简算3.6x42.3x3.75-12.5x0.423x28五年级简算3.6x42.3x3.75-12.5x0.423x28五年级简算3.6x

3.6x42.3x3.75-12.5x0.423x28五年级简算
3.6x42.3x3.75-12.5x0.423x28五年级
简算

3.6x42.3x3.75-12.5x0.423x28五年级简算
3.6x42.3x3.75-12.5x0.423x28
=4.23*(36*3.75-5*7)
=4.23*5*(36*0.75-7)
=42.3/2*(9*3-7)=42.3*10
=423

3.6x42.3x3.75-12.5x0.423x28
=4.23*(36*3.75-1.25*28)
=4.23*(108+27-28-7)
=4.23*(80+20)
=423

423

3.6*42.3*3.75-12.5*0.423*28
=3.6*42.3*3.75-12.5*42.3*0.28
=3.6*42.3-12.5*0.28
=152.28-3.5
=148.78