一年级数学下册第1单元加与减(一)老鼠钻地洞拓展资料素材(新版)北师大版.docx

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1老鼠钻地洞16 只老鼠钻地洞,如果遇到岔路口,每一组就要分成数目相等的两组继续下去, 最后 5 个出口分别会跑出几只老鼠呢?(答案:A、B、C、D、E 分别为 1 只、4 只、6 只、4 只、1 只。 )

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