一年级上册数学凑十法专项练习(最新整理)
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一年级上册数学凑十法专项练习
凑十法口诀：看大数，拆小数，凑成十，算得数。
一九一九好朋友，
二八二八手拉手，
三七三七真亲密，
四六四六一起走，
五五凑成一双手。
凑十法的就是 9 加几转 10 加几的计算方法。
以2+9=11 为例
（1）把9 分成8 和1
（2）凑十：2+8=10
（3）算得数：10+1=11
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