5.264+2.354-6.99【用简便计算】

分类: 作业答案 • 2022-07-08 00:13:01

问题描述：

答

5.264+2.354-6.99
=7.618-7+0.01
=0.618+0.01
=0.628

答

5.264+2.354-6.99
=5.264+2.354-(7-0.01)
=5.264+2.354-7+0.01
=7.618-7+0.01
=0.618+0.01
=0.628