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复习 1. 把加法算式改写成乘法算式。 2+2+2 7+7+7+7 4+4+4 5+5+5

复习 1. 把加法算式改写成乘法算式。 2+2+2 7+7+7+7 4+4+4 5+5+5. 3 个 2 2×3. 4 个 7 7×4. 3 个 5 5×3. 3 个 4 4×3. 这些图片都和哪个数字有关系?. 5. 5 的乘法口诀. 5. 1 个 5 是 5 。. 一五 得五. 5 × 1 = 5. 1 × 5 = 5. 5. 5. 二五 一十. 5 × 2 = 10. 2 × 5 = 10. 2 个 5 是 10. 5. 5. 5. 3 × 5 = 15.

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复习 1. 把加法算式改写成乘法算式。 2+2+2 7+7+7+7 4+4+4 5+5+5

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  1. 复习 1.把加法算式改写成乘法算式。 2+2+2 7+7+7+7 4+4+4 5+5+5 3个2 2×3 4个7 7×4 3个5 5×3 3个4 4×3

  2. 这些图片都和哪个数字有关系? 5

  3. 5的乘法口诀

  4. 5 1个5是5。 一五得五 5×1=5 1×5=5

  5. 5 5 二五一十 5×2=10 2×5=10 2个5是10

  6. 5 5 5 3×5=15 3×5=15 3个5是15 三五十五

  7. 5 5 5 5 4×5=20 4×5=20 4个5是20 四五二十

  8. 5 5 5 5 5 5个5是25 5×5=25 五五二十五

  9. 5的乘法口诀 一五得五 二五一十 三五十五 四五二十 五五二十五

  10. 1.按要求补充完整。 二五一十 乘法算式:————————————————— 或——————————————————— 5×5=25 口决:———————————————————— 2×5=10 五五二十五 5×2=10

  11. 2.看图写算式 5 2 10 ( )×( )= ( ) ( )×( )= ( ) 口诀: 2 5 10 二五一十

  12. 3.我会填 得五 一五( ) 二五( ) ( )十五 ( )五二十 五( )二十五 一十 三五 四 五

  13. 4.算算填填: 15 5×3+5= ( )×( )=20 5×2+5= 5×3= 20 15 5 4 4 ( )×( )+5=25 5 25 5×5=( )

  14. 总结: 通过这节课的学习,同学们能够记住5的乘法口诀了吗?

  15. 今天就到这儿吧, 再见

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