出题中 请稍等 ^_^
温馨提示
要认真对待错题，建议把错题收集起来定期复习
题目2
29 + 53 =
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| 2 / 10 |
题目3
27 + 38 =
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| 3 / 10 |
题目4
75 + 9 =
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| 4 / 10 |
题目5
54 - 48 =
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| 5 / 10 |
题目6
51 - 44 =
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| 6 / 10 |
题目7
53 - 16 =
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| 7 / 10 |
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