6.81加6.81乘99加16.9除0.13又简便方法算

分类: 作业答案 • 2021-12-31 13:48:04

问题描述：

答

6.81+6.81*99+16.9/0.13
=6.81*(1+99)+(130*0.13)/0.13
=6.81*100+130*(0.13/0.13)
=681+130
=811