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计算:3.6×42.3×3.75-12.5×0.423×28=______.

来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/11/05 21:54:31
计算:3.6×42.3×3.75-12.5×0.423×28=______.
3.6×42.3×3.75-12.5×0.423×28
=3.6×42.3×1.25×3-1.25×10×42.3×0.28
=42.3×1.25×(3.6×3-10×0.28)
=42.3×1.25×(10.8-2.8)
=42.3×1.25×8
=42.3×(1.25×8)
=42.3×10
=423
故答案为:423.