56.5-41.2+42.5-58.8简便计算...题目素56.5-41.2+43.5-58.8

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56.5-41.2+42.5-58.8简便计算...题目素56.5-41.2+43.5-58.8
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56.5-41.2+42.5-58.8简便计算...题目素56.5-41.2+43.5-58.8
56.5-41.2+42.5-58.8简便计算
...题目素56.5-41.2+43.5-58.8

56.5-41.2+42.5-58.8简便计算...题目素56.5-41.2+43.5-58.8
56.5-41.2+42.5-58.8
=(56.5+42.5)-(41.2+58.8)
=99-100
=-1
如果本题有什么不明白可以追问,

56.5-41.2+42.5-58.8
=56.5+42.5-41.2-58.8
=56.5+42.5-(41.2+58.8)
=99-100
=-1

不用简便方法按顺序做,答案也不是0啊,是-1,在好好看看吧

56.5-41.2+43.5-58.8
=56.5-43.5+41.2+58.8
=13+100
=113
望采纳⊙▽⊙

56.5+43.5-(41.2+58.5)=0