4.428.6+41.65.6 简便计算

分类: 作业答案 • 2021-12-31 09:40:38

问题描述：

4.4*28.6+41.6*5.6 简便计算

答

原式=4.4*5.6+4.4*23+41.6*5.6
=46*5.6+4.4*23
=23*5.6+23*5.6+4.4*23
=23*（5.6+4.4）+23*5.6
=23*10+23*5.6
=230+128.8
=358.8

4.4*28.6+41.6*5.6 简便计算