计算98+998+9998+``````+999999``````(50个9)8=
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![计算98+998+9998+``````+999999``````(50个9)8=](/uploads/image/z/107363-11-3.jpg?t=%E8%AE%A1%E7%AE%9798%2B998%2B9998%2B%60%60%60%60%60%60%2B999999%60%60%60%60%60%60%2850%E4%B8%AA9%EF%BC%898%3D)
计算98+998+9998+``````+999999``````(50个9)8=
计算98+998+9998+``````+999999``````(50个9)8=
计算98+998+9998+``````+999999``````(50个9)8=
98+998+9998+``````+999999``````(50个9)8
=100-2+1000-2+10000-2+.+1000000.00000-2(50个0)
=1111.111100(48个1)-2*50
=111.111000(47个1)
求简便计算8+98+998+9998+99998=
1998+998+98递等式计算
计算:98+998+9998+...+99...(这里省略50个9)98
99998+9998+998+98+8(用简便方法计算)怎么做
计算98+998+9998+``````+999999``````(50个9)8=
计算98+998+9998+...+99...98等于几98+998+9998+...+99...98(50个9)
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