12.5×0.4×2.5×80.87×3.16+4.649×101用简便方法怎么做
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/04/29 10:03:19
12.5×0.4×2.5×80.87×3.16+4.649×101用简便方法怎么做
12.5×0.4×2.5×80.87×3.16+4.649×101
=12.5×(0.4×2.5)×80.87×3.16+4.649×(100+1)
=12.5×1×80.87×3.16+464.9+4.649
=3660.914
=12.5×(0.4×2.5)×80.87×3.16+4.649×(100+1)
=12.5×1×80.87×3.16+464.9+4.649
=3660.914