20以内减法借十法破十法强化训练精编版.doc

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1、20以内减法借十法练习题口诀: 进位加法(凑十法口诀:看大数,分小数,凑成十,算得数)退位减法(破十法口诀:看大数,分出10,减小数,加剩数)如嫌题目太少可更改数字 7例:15 8 = 5102(一)18 9 = 17 9 = 16 9 = 15 9 = 14 9 = 13 9 = 12 9 = 11 9 = 17 8 = (二)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 = (三)13 5

2、= 12 5 = 11 5 = 13 4 = 12 4 = 11 4 = 12 3 = 11 3 = 11 2 = 13 5 = 12 5 = 11 5 = 13 4 = 12 4 = 11 4 = 16 7 = 15 7 = 14 7 = (四)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 = (五)12 3 = 11 3 = 11 2 = 13 5 = 12 5 = 11 5 = 13 8

3、= 12 8 = 11 8 = 16 7 = 15 7 = 14 7 = 12 6 = 11 6 = 14 5 = 15 9 = 14 9 = 13 9 = (六)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 = (七)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

4、= 14 9 = 13 9 = 13 7 = 12 7 = 11 7 = (八)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 = (九)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 = (十)13

5、 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 = (十一)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 = (十二)16 7 = 15 7 = 14 7 = 18 9 = 17 9 = 16 9 =

6、15 9 = 14 9 = 13 9 = 13 7 = 12 7 = 11 7 = 12 9 = 11 9 = 17 8 = 16 8 = 15 8 = 14 8 = (十三)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 = (十四)16 8 = 15 8 = 14 8 = 13 4 = 12 4 = 11 4 = 12 3 = 11 3 = 11 2 = 13 5 = 12 5 = 11 5

7、= 13 8 = 12 8 = 11 8 = 16 7 = 15 7 = 14 7 = (十五)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 = (十六)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 = (十七)15 9 = 14 9 = 13 9 = 13 7 = 12 7 = 11 7 = 12 9 = 11 9 = 17 8 = 16 8 = 15 8 = 14 8 =

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