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20 以内的进位加法

20 以内的进位加法. 解决问题(例 5 例 6 ). 新安小学 陈茂进. 绿色圃中小学教育网 http://www.lspjy.com. 一、口算. 8 + 3 =. 11. 6 + 5 =. 11. 8 + 6 =. 14. 8 + 8 =. 16. 7 + 7 =. 14. 6 + 6 =. 12. 5 + 9 =. 14. 9 + 4 =. 13. 8 + 5 =. 13. 15. 8 + 7 =. 15. 9 + 6 =. 15. 7 + 8 =. 绿色圃中小学教育网 http://www.lspjy.com. 后排.

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20 以内的进位加法

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  1. 20以内的进位加法 解决问题(例5 例6) 新安小学 陈茂进 绿色圃中小学教育网http://www.lspjy.com

  2. 一、口算 8+3= 11 6+5= 11 8+6= 14 8+8= 16 7+7= 14 6+6= 12 5+9= 14 9+4= 13 8+5= 13 15 8+7= 15 9+6= 15 7+8= 绿色圃中小学教育网http://www.lspjy.com

  3. 后排 男生 前排 女生 例5 一共有多少人? 绿色圃中小学教育网http://www.lspjy.com

  4. 7+8=15(人) 9+6=15(人) 例5 答:一共有15人。

  5. = (只) (只) + + 7 8 7 6 14 14 做一做 一共有多少只天鹅? 答:一共有14只天鹅。 绿色圃中小学教育网http://www.lspjy.com

  6. 原来有多少个 ? 例6 绿色圃中小学教育网http://www.lspjy.com

  7. 7+5=12(个) 答:原来有12个。 绿色圃中小学教育网http://www.lspjy.com

  8. (个) + 8 6 14 做一做 原来有多少个鸡蛋? 答:原来有14个鸡蛋。 绿色圃中小学教育网http://www.lspjy.com

  9. = (人) (人) + + 5 8 9 6 14 14 课堂练习,巩固提升 一共有多少人? 答:一共有14人。 绿色圃中小学教育网http://www.lspjy.com

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