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7的乘法口诀

7的乘法口诀. 42. 21. 35. 28. 49. 14. 7. 孙悟空在炼丹炉中七七四十九天, 炼成火眼金睛; 取经路上遇到妖怪, 不管三七二十一, 举起金箍棒就打。. 想一想:可用哪句口诀计算?. 14. 7 × 3 =. 21. 7. 7 × 2 =. 7 × 1 =. 一七 得七. 二七十四. 三七二十一. 7 × 4 =. 28. 7 × 5 =. 35. 7 × 6 =. 42. 四七二十八. 五七三十五. 六七四十二. 你能快速地算出这些算式的得数吗?. 28. 35. 42. 3×7 + 7 =.

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7的乘法口诀

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  1. 7的乘法口诀

  2. 42 21 35 28 49 14 7

  3. 孙悟空在炼丹炉中七七四十九天, 炼成火眼金睛; 取经路上遇到妖怪, 不管三七二十一, 举起金箍棒就打。

  4. 想一想:可用哪句口诀计算? 14 7×3= 21 7 7×2= 7×1= 一七 得七 二七十四 三七二十一 7×4= 28 7×5= 35 7×6= 42 四七二十八 五七三十五 六七四十二

  5. 你能快速地算出这些算式的得数吗? 28 35 42 3×7+7= 4×7+7= 5×7+7= 28 35 42 4×7= 5×7= 6×7= 28 35 42 7×4= 7×5= 7×6=

  6. 看口诀说出两个乘法算式 四七二十八 三七二十一 七七四十九 4×7=28 7×4=28 3×7=21 7×3=21 7×7=49 五七三十五 六七四十二 二七十四 5×7=35 7×5=35 6×7=42 7×6=42 2×7=14 7×2=14 一七得七 1×7=7 7×1=7

  7. 看算式说口诀 2×7= 7×4= 3×7= 7×5= 4×7= 5×7= 1×7= 7×6= 7×7=

  8. 村居 草长莺飞三月天, 拂堤杨柳醉春烟。 儿童散学归来早, 忙趁东风放纸鸢。

  9. 小明的爸爸已经出差3个星期了,你知道小明有多少天没见到爸爸了吗?小明的爸爸已经出差3个星期了,你知道小明有多少天没见到爸爸了吗? 3×7=21(天) 医生说:人每天要喝6杯水。那么,一个星期要喝几倍水呢? 7×6=42(杯)

  10. 一个矮人一张床,七个矮人七张床。 一个矮人两只碗,七个矮人十四只碗。

  11. 一 二 三 四 五 六 日 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 算算三月有多少天? × + = 或 × + =

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