要用简便算法3140.82+31.40.8+31.4 53×0.03-0.7÷30

分类: 作业答案 • 2021-12-20 05:04:13

问题描述：

要用简便算法
314*0.82+31.4*0.8+31.4 53×0.03-0.7÷30

答

314*0.82+31.4*0.8+31.4
=31.4*8.2+31.4*0.8*31.4*1
=31.4*(8.2+0.8+1)
=31.4*10
=314

要用简便算法314*0.82+31.4*0.8+31.4 53×0.03-0.7÷30