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北师大版三年级数学上册

北师大版三年级数学上册. 0 × 5 = ?. 管仲小学:钱中柱 2012.8.25. 5+0= 36+0= 456+0= 23+0=. 5. 36. 23. 456. 任何数加 0 都得任何数。. 5-0= 36-0= 456-0 = 23-0=. 5. 36. 23. 456. 任何数减 0 都得任何数。. 0 × 5 = ?. 一共有几个苹果?(分别用加法和乘法计算).

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北师大版三年级数学上册

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  1. 北师大版三年级数学上册 0 × 5 = ? 管仲小学:钱中柱 2012.8.25

  2. 5+0= 36+0= 456+0= 23+0= 5 36 23 456 任何数加0都得任何数。 5-0= 36-0= 456-0 = 23-0= 5 36 23 456 任何数减0都得任何数。

  3. 0 × 5 = ?

  4. 一共有几个苹果?(分别用加法和乘法计算) • 3+3+3+3+3=15(个) • 3×5=15(个)

  5. 一共有几个苹果?(分别用加法和乘法计算) • 2+2+2+2+2=10(个) • 2×5=10(个)

  6. 一共有几个苹果?(分别用加法和乘法计算) • 1+1+1+1+1=5(个) • 1×5=5(个)

  7. 一共有几个苹果?(分别用加法和乘法计算) • 0+0+0+0+0=0(个) • 0×5= (个) 0

  8. 0 0×3 = 7×0= 0×26= 0 0乘任何数都得0。 0 0 0×0= 1999×0= 0 1999

  9. 乘数末尾有0 6 5 0 130×5= 我这样算: 100×5=500 30×5=150 500+150 =650

  10. 乘数末尾有0 1 3 0 5 × 6 5 0 130×5= 1 6 5 0

  11. 乘数末尾有0 6 5 0 130×5= 我这样算: 13×5=65 130×5=650

  12. 乘数末尾有0 6 5 0 130×5= 1 3 0 × 5 1 0 6 5

  13. 1 3 0 × 5 _ 5 0 1 3 0 × 5 5 0 1 1 乘数末尾有0。 130 ×5 = 650 13×5 = 65 130×5 = 650 6 6

  14. 乘数中间有0 1 2 0 6 402×3= 我这样算: 400×3=1200 2×3=6 1200+6 =1206

  15. 乘数中间有0 4 0 2 3 × 402×3= 1 2 6 1 1 2 6

  16. 乘数中间有0 4 0 2 3 × 1 2 0 6 402×3= 1 1 2 0 6

  17. 204×2= 302×5= 240×2= 320×5=

  18. 算一算。 621 750 450 912

  19. (1)小狗从邮局出发给狐狸送信,往返 需要走多少米? 130×2 = 260(米) 答:往返需要走260米。

  20. (2)小狗先给狐狸送信,再给松鼠送信,然后回到邮局,共走多少米?(2)小狗先给狐狸送信,再给松鼠送信,然后回到邮局,共走多少米? 130×3 = 390(米) 答:共走 390 米。

  21. 在 内填上“>”、“ <”、“ =” 105×6 600 190×5 1000 180×4 800 140×7 980 =

  22. (20+80)×3 20+80×3 =100×3 =20+240 =300 =260

  23. 本课总结 0和任何数相乘都等于0 能应用所学知识解决学习中的简单问题。

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