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MGSM / 查理有 10 张贴纸。他从商场的商店买了 21 张贴纸,并在生日上收到了 23 张贴纸。然后查理把其中 9 张贴纸给了他妹妹,并用 28 张贴纸装饰贺卡。查理还…

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查理有 10 张贴纸。他从商场的商店买了 21 张贴纸,并在生日上收到了 23 张贴纸。然后查理把其中 9 张贴纸给了他妹妹,并用 28 张贴纸装饰贺卡。查理还剩下多少张贴纸?

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