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

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/08 12:29:42

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

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