简算：2..25×1.8+1.25×0.18

分类: 作业答案 • 2023-01-11 08:51:42

问题描述：

答

2.25×1.8+1.25×0.18 = 2.25×1.8+1.25×1.8/10 = 2.25×1.8+0.125×1.8 = (2.25 + 0.125 )*1.8 =2.375 * 1.8 =4.275