下面的题目你能用简便算法计算吗?0.85+2.7+15% 37×0.39-27×39%

分类: 作业答案 • 2021-12-31 13:09:35

问题描述：

答

0.85+2.7+15%
=0.85+2.7+0.15
=1+2.7
=3.7

37×0.39-27×39%
=37*0.39-27*0.39
=0.39*(37-27)
=0.39*10
=3.9