3.8+4.29+2.1+4.2 能简算的要简算 3.8+4.29+2.1+4.2

问题描述:

3.8+4.29+2.1+4.2 能简算的要简算
3.8+4.29+2.1+4.2

太简单了吧
3.8+4.29+2.1+4.2
=(3.8+4.2)+(4.29+2.1)
=8+6.39
=14.39