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85问答库 > 请问489+487+483+484+486+481请问怎样简便算

请问489+487+483+484+486+481请问怎样简便算

2025-01-27 12:22:42

推荐回答（5个）

回答1：

回答2：

看看个位数，想想加法交换律

回答3：

489+481+483+487+484+486=970+970+970=2100

回答4：

（480乘6）加9+7+3+4+6+1

回答5：

(489+481)+(487+483)+(484+486)=2910

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