4.80.23+0.487.7怎么简便计算

分类: 作业答案 • 2021-12-19 16:51:26

问题描述：

4.8*0.23+0.48*7.7怎么简便计算

答

4.8*0.23+0.48*7.7
=4.8*0.23+0.48*7.7*10/10
=4.8*0.23+0.48*10*7.7/10
=4.8*0.23+4.8*7.7/10
=4.8*(0.23+0.77)
=4.8

答

4.8（0.23+0.77）

答

4.8*0.23+0.48*7.7
=4.8*0.23+4.8*0.77
=4.8*（0.23+0.77）
=4.8

4.8*0.23+0.48*7.7怎么简便计算