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9加几课件

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9加几课件

  1. 1. 小学数学一年级上册 20 以内的进位加法—— 衡阳市蒸湘区西站路小学 陈艳
  2. 3. 9 + 4 = 10 1 13 3 摆一摆 , 算一算 :
  3. 5. 9 + 7 = 10 1 16 6 摆一摆 , 算一算 :
  4. 6. 凑十法 <ul><li>和我拍手说 </li></ul>看大数 分小数 凑成十 算得数
  5. 7. 还有什么关于“凑十法的” 问题呢?
  6. 8. 圈一圈 算一算 9 + 5 = 14 10 1 4
  7. 9. 圈一圈 算一算 9 + 6 = 15 10 1 5
  8. 10. 10 1 3 4 13 9 + ( ) = ( )
  9. 11. 10 1 7 8 17 9 + ( ) = ( )
  10. 12. 谁最快 <ul><li>9﹢5 = 9 ﹢2 = 9 ﹢ 9 = </li></ul><ul><li>9﹢4 = 9 ﹢8 = 9 ﹢ 6 = </li></ul><ul><li>9﹢7 = 9 ﹢3 = </li></ul>14 11 18 13 17 15 16 12
  11. 13. 今天你学会了什么? 身边还有哪些数学问题可以用到“凑十法”? 下节课比比谁是小数学家。 说一说 找一找

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