一年级数学20以内破十法减法练习题_一年级上下册资料_小学一年级学习资料-25年更新版_1-04、小学一年级数学下册_1-4-2、练习题、作业、试题、试卷_通用_一年级下册-20以内加减法

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20 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
18 — 9 = 17 — 9 = 16 — 9 =
15 — 9 = 14 — 9 = 13 — 9 =
12 — 9 = 11 — 9 = 17 — 8 =
16 — 8 = 15 — 8 = 14 — 8 =
..
13 — 8 = 12 — 8 = 11 — 8 =
16 — 7 = 15 — 7 = 14 — 7 =
13 — 7 = 12 — 7 = 11 — 7 =
15 — 6 = 14 — 6 = 13 — 6 =
12 — 6 = 11 — 6 = 14 — 5 =
13 — 5 = 12 — 5 = 11 — 5 =
13 — 4 = 12 — 4 = 11 — 4 =
12 — 3 = 11 — 3 = 11 — 2 =
.. .
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13 — 5 = 12 — 5 = 11 — 5 =
13 — 4 = 12 — 4 = 11 — 4 =
16 — 7 = 15 — 7 = 14 — 7 =
18 — 9 = 17 — 9 = 16 — 9 =
15 — 9 = 14 — 9 = 13 — 9 =
13 — 7 = 12 — 7 = 11 — 7 =
12 — 9 = 11 — 9 = 17 — 8 =
..
16 — 8 = 15 — 8 = 14 — 8 =
13 — 4 = 12 — 4 = 11 — 4 =
12 — 3 = 11 — 3 = 11 — 2 =
13 — 5 = 12 — 5 = 11 — 5 =
13 — 8 = 12 — 8 = 11 — 8 =
16 — 7 = 15 — 7 = 14 — 7 =
12 — 6 = 11 — 6 = 14 — 5 =
..
15 — 9 = 14 — 9 = 13 — 9 =
13 — 4 = 12 — 4 = 11 — 4 =
12 — 3 = 11 — 3 = 11 — 2 =
13 — 5 = 12 — 5 = 11 — 5 =
13 — 8 = 12 — 8 = 11 — 8 =
16 — 7 = 15 — 7 = 14 — 7 =
12 — 6 = 11 — 6 = 14 — 5 =
..
15 — 9 = 14 — 9 = 13 — 9 =
13 — 4 = 12 — 4 = 11 — 4 =
16 — 7 = 15 — 7 = 14 — 7 =
18 — 9 = 17 — 9 = 16 — 9 =
15 — 9 = 14 — 9 = 13 — 9 =
13 — 7 = 12 — 7 = 11 — 7 =
12 — 9 = 11 — 9 = 17 — 8 =
.. .
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16 — 8 = 15 — 8 = 14 — 8 =
13 — 4 = 12 — 4 = 11 — 4 =
16 — 7 = 15 — 7 = 14 — 7 =
18 — 9 = 17 — 9 = 16 — 9 =
15 — 9 = 14 — 9 = 13 — 9 =
13 — 7 = 12 — 7 = 11 — 7 =
12 — 9 = 11 — 9 = 17 — 8 =
..
16 — 8 = 15 — 8 = 14 — 8 =
13 — 4 = 12 — 4 = 11 — 4 =
12 — 3 = 11 — 3 = 11 — 2 =
13 — 5 = 12 — 5 = 11 — 5 =
13 — 8 = 12 — 8 = 11 — 8 =
16 — 7 = 15 — 7 = 14 — 7 =
12 — 6 = 11 — 6 = 14 — 5 =
..
15 — 9 = 14 — 9 = 13 — 9 =
13 — 4 = 12 — 4 = 11 — 4 =
12 — 3 = 11 — 3 = 11 — 2 =
13 — 5 = 12 — 5 = 11 — 5 =
13 — 8 = 12 — 8 = 11 — 8 =
16 — 7 = 15 — 7 = 14 — 7 =
12 — 6 = 11 — 6 = 14 — 5 =
.. .
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15 — 9 = 14 — 9 = 13 — 9 =
13 — 4 = 12 — 4 = 11 — 4 =
16 — 7 = 15 — 7 = 14 — 7 =
18 — 9 = 17 — 9 = 16 — 9 =
15 — 9 = 14 — 9 = 13 — 9 =
13 — 7 = 12 — 7 = 11 — 7 =
12 — 9 = 11 — 9 = 17 — 8 =
..
16 — 8 = 15 — 8 = 14 — 8 =
13 — 4 = 12 — 4 = 11 — 4 =
16 — 7 = 15 — 7 = 14 — 7 =
18 — 9 = 17 — 9 = 16 — 9 =
15 — 9 = 14 — 9 = 13 — 9 =
13 — 7 = 12 — 7 = 11 — 7 =
12 — 9 = 11 — 9 = 17 — 8 =
..
16 — 8 = 15 — 8 = 14 — 8 =
13 — 4 = 12 — 4 = 11 — 4 =
12 — 3 = 11 — 3 = 11 — 2 =
13 — 5 = 12 — 5 = 11 — 5 =
13 — 8 = 12 — 8 = 11 — 8 =
16 — 7 = 15 — 7 = 14 — 7 =
12 — 6 = 11 — 6 = 14 — 5 =
.. .
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15 — 9 = 14 — 9 = 13 — 9 =
13 — 4 = 12 — 4 = 11 — 4 =
12 — 3 = 11 — 3 = 11 — 2 =
13 — 5 = 12 — 5 = 11 — 5 =
13 — 8 = 12 — 8 = 11 — 8 =
16 — 7 = 15 — 7 = 14 — 7 =
12 — 6 = 11 — 6 = 14 — 5 =
..
15 — 9 = 14 — 9 = 13 — 9 =
13 — 4 = 12 — 4 = 11 — 4 =
16 — 7 = 15 — 7 = 14 — 7 =
18 — 9 = 17 — 9 = 16 — 9 =
15 — 9 = 14 — 9 = 13 — 9 =
13 — 7 = 12 — 7 = 11 — 7 =
12 — 9 = 11 — 9 = 17 — 8 =
..
16 — 8 = 15 — 8 = 14 — 8 =
..
例子：
9 + 9 = 9 + 8 = 9 + 7 =
巩固练习：
7 + 9 = 7 + 8 = 7 + 7 =
9 + 9 = 9 + 8 = 9 + 7 =
【重点知识二】
破十法：退位减法使用
破十法口诀：看大数，分出 10，减小数，加剩数
例子：
18 – 9 = 17 – 9 = 16 – 9 = 15 – 9 =
巩固练习：
17 – 8 = 16 – 8 = 15 – 8 = 14 – 8 =
.. .
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13 – 8 = 12 – 8 = 11 – 8 = 16 – 7 =
提升练习题
一、 口算
12– 6 = 11 – 6 = 14 – 5 = 13 – 5 =
6 + 9 = 6 + 8 = 6 + 7 =
15– 6 = 12 – 6 = 12 – 5 = 17 – 9 =
13– 4= 11 – 5 = 14 – 6 = 16 – 8=
..
15– 9= 18 – 9= 12 – 7= 14 – 9=
13– 7 = 12 – 9 = 11 – 3 = 12 – 5 =
13– 7 = 12 – 9 = 11 – 3 = 12 – 5 =
16– 9 = 15 – 8 = 13 – 8= 11 – 6 =
13– 7 = 12 – 9 = 11 – 3 = 12 – 5 =
单纯的课本内容，并不能满足学生的需要，通过补充，达到内容的完善
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