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20以内退位减法3000题!一年级数学必备练习册(电子版可打印)

  • 2026-11-04 16:09:06
20以内退位减法3000题!一年级数学必备练习册(电子版可打印)
全网最全专项训练，攻克减法难点
开学一个月，不少家长发现孩子在做减法题时总是掰手指计算，特别是遇到"15-8"这类退位减法时更是面露难色。其实只要掌握方法，配合适量练习，孩子就能轻松突破这个难点！
          文末有完整版资料领取方式
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  1. CONNECT:[ UseTime:0.000602s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
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  14. SELECT * FROM `article` WHERE `id` < 536709 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000655s ]
  15. SELECT * FROM `article` WHERE `id` < 536709 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000669s ]
0.106838s