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欢迎同学们 来上数学课!

欢迎同学们 来上数学课!. 特级教师 钱守旺 http://weibo.com/qsw1088. 准备上课了!. 5. 5. 5. 15. 5. 3. 15. 3. 3. 3. 12. 3. 3. 4. 12. 2. 2. 2. 2. 2. 2. ( 3 ). 10. 5. 10. 2. ······. 2. 2. ( 3 ). ?. 20. 格。.

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欢迎同学们 来上数学课!

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  1. 欢迎同学们 来上数学课! 特级教师 钱守旺 http://weibo.com/qsw1088

  2. 准备上课了!

  3. 5 5 5 15 5 3 15

  4. 3 3 3 12 3 3 4 12

  5. 2 2 2 2 2 2 (3) 10 5 10 2 ······ 2

  6. 2 (3) ? 20 格。 2+2+2+2+2+2 +2+2+2+2+2 +2+2+2+2+2 +2+2+2+2 20个2相加

  7. (1) 有多少人坐小飞机? 2 2 2 2

  8. 2×4=8 2+2+2+2=8 12 2×6= 2+2+2+2+2+2= 12 16 2×8= 2+2+2+2+2+2+2+2= 16

  9. 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

  10. 2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2=2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2= 2×30

  11. 2 (3) 20 格。 2×20 2+2+2+2+2+2 +2+2+2+2+2 +2+2+2+2+2 +2+2+2+2 20个2相加

  12. 4 3 6 4 2 5 4 3 4 6 5 2

  13. 请你再提出一个用乘法解决的数学问题,并列出算式。请你再提出一个用乘法解决的数学问题,并列出算式。

  14. 4×6 6×4 4×6 6×4

  15. 一共有几个 ? 4×3 4×3 3×4 3×4

  16. 一共有几个 ? 5×4 4×5

  17. 一共有几个 ? 3×5 5×3

  18. 一共有几个 ? 8×5 5×8

  19. 一共有几块 ? 9×3 3×9

  20. 一共有几条 ? 3×4 4×3

  21. 一共有几个车轮? 2×9 9×2

  22. 一共有几个手指? 5×6 6×5

  23. 一共有几只鞋子? 2×7 7×2

  24. 2×7 7×2

  25. 2×7 7×2

  26. 4×6 6×4

  27. P19

  28. 4 12 3 6 2 12 4 10 20 10 15 6 8 格 5 格 20 4 2 5 10 下一张 P19

  29. 连一连

  30. 看一看——走进生活

  31. 回顾与反思

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