计算67.5乘23加450乘6.75加675乘3.2的简便算法

分类: 作业答案 • 2021-12-28 15:38:23

问题描述：

答

67.5x23+450x6.75+675x3.2
=675x2.3+4.5x675+675x3.2
=675x(2.3+4.5+3.2)
=675x(2.3+3.2+4.5)
=675x(5.5+4.5)
=675x10
=6750