(完整版)一年级数学20以内破十法减法练习题
玛丽莲梦兔
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2021年01月22日 06:02
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以内破十法减法练习题
凑十法儿歌
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。
看大数，分小数，
凑成十，加剩数。
大数记心里，小数记手里
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