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Kids learn mental arithmetic addition and subtraction  Elementary school mathematics games

Kids learn mental arithmetic addition and subtraction Elementary school mathematics games

26万下载 • 2月26日更新

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Kids learn mental arithmetic addition and subtraction  Elementary school mathematics games

Kids learn mental arithmetic addition and subtraction Elementary school mathematics games

26万下载

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小学一年级数学口算4000题,10以内加法减法、20以内加法减法、100以内加法减法;学习模式与练习模式,上学期47节,下学期46节,答错的题单元,与小学一年级数学上下册课本课程同步

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