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85问答库 > 25分之1+25分之2+25分之3+25分之4+25分之4+25分之3加25分之2+25分之1 要简便运算的

25分之1+25分之2+25分之3+25分之4+25分之4+25分之3加25分之2+25分之1 要简便运算的

25

2025-04-04 15:42:07

推荐回答（4个）

回答1：

解：

原式
=(1+2+3+4)×2×1/25
=20/25
=4/5 （5分之4）

回答2：

1/25+2/25+3/25+4/25+4/25+3/25+2/25+1/25
=(1+2+3+4)2/25
=20/25
=4/5

回答3：

1/25+2/25+3/25+4/25+4/25+3/25+2/25+1/25
=[(1+4)2+(2+3)2]/25
=20/25
=4/5

回答4：

（1+4）+（2+3）+（3+2）+（1+4）=4✘5=20最终结果4/5

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