Question

3.75*4.23*36-125*0.423*2.8简便算法

Answer 1

•  3.75*4.23*36-125*0.423*2.8
  =3.75*4.23*36-1.25*4.23*28
  =4.23（3.75*36-1.25*28）
  =4.23（1.25*3*36-1.25*28）
  =4.23（1.25*108-1.25*28）
  =4.23（1.25*80）
  =4.23*100
  =423

4.23*36-125*0.423*2.8 = 423

Answer 2

3.75*4.23*36-125*0.423*2.8
=3.75*4.23*36-1.25*4.23*28
=4.23（3.75*36-1.25*28）
=4.23（1.25*3*36-1.25*28）
=4.23（1.25*108-1.25*28）
=4.23（1.25*80）
=4.23*100
=423

Answer 3

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