3,642,33,75-12,50,42528

分类: 作业答案 • 2021-12-20 05:44:53

问题描述：

3,6*42,3*3,75-12,5*0,425*28

答

3.6×42.3×3.75-12.5×0.423×28
=3.6×42.3×3.75-12.5×42.3×0.28
=42.3×1.25×(10.8-2.8)
=42.3×(1.25×8)
=423

3,6*42,3*3,75-12,5*0,425*28