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  • 把答案相同的算式連起來
    Great job!!!
  • 教室裡本來有23個小朋友,有9個出去跑出去上廁所,現在教室裡剩下幾個小朋友?
    23-9=14
  • 你本來有18元,媽媽再給你20元,請問你現在有多少錢?
    18+20=38
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