0.9+0.99+0.999+0.9999+0.99999的简便计算方法
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/11/07 16:52:33
0.9+0.99+0.999+0.9999+0.99999的简便计算方法
0.9+0.99+0.999+0.9999+0.99999
=1-0.1+1-0.01+1-0.001+1-0.0001+1-0.00001
=5-(0.1+0.01+0.001+0.0001+0.00001)
=5-0.11111
=4,88889
再问: 98989898*99999999÷101010÷11111111简便,求您了
再答: 98989898*99999999÷101010÷11111111 =98989898÷101010*99999999÷11111111 =(98989800+98)÷101010*9 =98989800÷101010*9+98÷101010*9 =980*9+882÷101010 =8820+441/50505 =8820又441/50505
=1-0.1+1-0.01+1-0.001+1-0.0001+1-0.00001
=5-(0.1+0.01+0.001+0.0001+0.00001)
=5-0.11111
=4,88889
再问: 98989898*99999999÷101010÷11111111简便,求您了
再答: 98989898*99999999÷101010÷11111111 =98989898÷101010*99999999÷11111111 =(98989800+98)÷101010*9 =98989800÷101010*9+98÷101010*9 =980*9+882÷101010 =8820+441/50505 =8820又441/50505