用简便方法计算:0.9+0.99+0.999
来源:学生学帮网 编辑:学帮网 时间:2024/05/27 08:21:46
用简便方法计算:0.9+0.99+0.999
0.9+0.99+0.999
=1-0.1+1-0.01+1-0.001
=3-(0.1+0.01+0.001)
=3-0.111
=2.889
用简便方法计算:0.9+0.99+0.999
0.9+0.99+0.999
=1-0.1+1-0.01+1-0.001
=3-(0.1+0.01+0.001)
=3-0.111
=2.889