4.4+4.412+135.6怎么简便计算

分类: 作业答案 • 2021-12-31 09:43:41

问题描述：

4.4+4.4*12+13*5.6怎么简便计算

答

4.4+4.4*12+13*5.6
=4.4+4.4*12+13*(10-4.4)
=4.4+4.4*12+13*10-13*4.4
=4.4*(1+12-13)+13*10
=4.4*0+130
=130

4.4+4.4*12+13*5.6怎么简便计算