8.8+8.98+8.998+8.9998+8.99998+8.999998+8.9999998+8.99999998=

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/11 18:45:31
8.8+8.98+8.998+8.9998+8.99998+8.999998+8.9999998+8.99999998=

8.8+8.98+8.998+8.9998+8.99998+8.999998+8.9999998+8.99999998=
8.8+8.98+8.998+8.9998+8.99998+8.999998+8.9999998+8.99999998=

8.8+8.98+8.998+8.9998+8.99998+8.999998+8.9999998+8.99999998=
原式=9-0.2+9-0.02+9-0.002+9-0.0002+9-0.00002+9-0.000002+9-0.0000002+9-0.00000002
=9×8-0.22222222=71.77777778