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- 86 views
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有这样的一个四位数，千位数比个位数小3， …
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- 294 views
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- 321 views
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给你从1到10的十个数字，只用加减乘除算 …
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- 154 views
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- 244 views
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- 354 views
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- 431 views
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- 590 views
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- 752 views
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- 818 views
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- 569 views
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在等号左边的数字之间添加上适当的运算符号 …
- 693 views
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在下述等式之间只添加加号或减号，使之成立 …
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- 784 views
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- 756 views
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- 415 views
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