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好吧问答库 > 789-499-289用简便方法？

789-499-289用简便方法？

2025年03月16日 01:55

有5个网友回答

网友（1）：

789-499-289用简便方法？

789-499-289
=789-289-500+1
=500-500+1
=1

网友（2）：

789-499-289，用简便方法789-289=500-499=1。这样就是简便计算。

网友（3）：

你好
简便计算过程如下
789-499-289
=（789-289）-499
=500-499
=1
望采纳

网友（4）：

789-499-289
=789-289-499
=500-499
=1

网友（5）：

原式=789-289-499
=500-499
=1
加油你可以的

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