一年级数学上册第5单元6_10的认识和加减法《连加连减》课件新人教版.pptx

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口算,6,9,5,6,5,4,7,5,每组两题有什么关系?,你看到了什么?能提出一个问题吗?,一共有几只小鸡?,52,你又看到了什么?能提出一个问题吗?,一共有几只小鸡?,521,一共有几只小鸡?,52,一共有几只小鸡?,521,521,7,8,你们会计算这个算式吗?,你又看到了什么?能提出一个问题吗?,还剩几只小鸡?,822,你们会计算这个算式吗?,822,6,4,基本练习,23 54 234,5,5,9,5,9,93 64 934,6,6,2,6,2,做一做,1,8,5,2,先说一说图的意思, 再填一填。,

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