2.74+12.6+7.4+3.26的简便算法,急,快快快快快快快快

问题描述:

2.74+12.6+7.4+3.26的简便算法,急,快快快快快快快快

2.74+12.6+7.4+3.26
=2.74+3.26+12.6+7.4
=6+20
=26