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13问答网 > 12.5锧6.3阧12.5锧6.3有没有简便方法该怎么算？

12.5锧6.3阧12.5锧6.3有没有简便方法该怎么算？

2025-03-15 21:01:06

推荐回答（5个）

回答1：

可以先算12.5-12.5=0,然后再算6.3+6.3=12.6
12.5+6.3-12.5+6.3
=(12.5-12.5)+6.3+6.3
=0+6.3+6.3
=12.6

回答2：

简便计算过程方法如下
解：12.5+6.3-12.5+6.3
=(12.5-12.5)+6.3+6.3
=0+6.3+6.3
=12.6

回答3：

用加法交换律计算
12.5+6.3-12.5+6.3
=12.5-12.5+6.3+6.3
=0+6.3+6.3=12.6

回答4：

解：12.5+6.3-12.5+6.3
=12.5-12.5+(6.3+6.3)
=0+12.8=12.8

回答5：

12.5+6.3-12.5+6.3
=12.5-12.5+6.3+6.3
=6.3+6.3
=6.3×2
=12.6
望采纳

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