7.8*9.9+0.78的简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/24 03:14:38
x)3׳вԳ63x>'X6IExl7DlA
.CMma_\g̱Ye Jj~OPN$ACl 4qT
7.8*9.9+0.78的简便计算
7.8*9.9+0.78的简便计算
7.8*9.9+0.78的简便计算
7.8*9.9+7.8*0.1
=7.8*(9.9+0.1)
=7.8*10
=78
=0.78*99+0.78*1
=0.78*(99+1)
=0.78*100
=78