6.58*99.9+0.658用简便计算怎么做_数学解答

6.58*99.9+0.658用简便计算怎么做

人气：254 ℃　时间：2019-11-01 14:50:26

解答

6.58*99.9+0.658
=6.58*99.9+0.658*1
=6.58*99.9+6.58*0.1
=6.58*(99.9+0.1)
=6.58*100
=658