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二年级数学思维训练‖培优题

  • 2026-11-09 01:07:10

二年级数学思维训练‖培优题

这类数阵题，能够引导孩子观察数字关系、寻找规律，锻炼运算能力与逻辑推理，培养有序思考习惯，体会数学中的均衡之美，激发探究数学的兴趣。

重难点

重点：理解两个大圆有重叠共用数，会用总和之差求出重叠部分，再把剩余数字合理分组。

难点：读懂重叠部分要重复计算，有序尝试、验证，避免盲目乱填，形成推理思路。

数阵填数初级练习
九数布阵风车阵‖两类"风车阵"的异同点‖培养整体思考、有序试算的习惯，提升数感与严谨的逻辑分析能力
#二年级数学#数阵#培优训练

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  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000986s ]
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  9. UPDATE `article` SET `lasttime` = 1794164624 WHERE `id` = 540941 [ RunTime:0.001745s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000511s ]
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  13. SELECT * FROM `article` WHERE `id` < 540941 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000975s ]
  14. SELECT * FROM `article` WHERE `id` < 540941 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000803s ]
  15. SELECT * FROM `article` WHERE `id` < 540941 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000777s ]
0.107166s