8.67-5.8+1.33怎么简便计算?

问题描述:

8.67-5.8+1.33怎么简便计算?

8.67-5.8+1.33
=(8.67+1.33)-5.8
=10-5.8
=4.2

采用加法交换律和加法结合律
8.67-5.8+1.33=8.67+1.33-5.8=(8.67+1.33)-5.8=10-5.8=4.2