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1、20以内退位减法（一）班级学号姓名时间20 6 =14 6 =20 15=13 9=15 6 =13-6 =11 7 =16 7 =13 7=14 5 =15 8 =10 9 =12 6 =20 18=13 9 =13 7 =20 16=11 3 =13 4=10 1 =12 8 =12 7 =10 2 =20 5=12 9 =15 7 =14 6 =14 6 =10 1 =20 5 =13 7 =20 5 =12 8 =20 14=16 7 =20 6 =18 9 =20 13=14 8=13 5 =12 6 =13 7 =13 9 =18 9=17 9 =20 8 =15 7 =20 14

2、=13 7=10 3 =20以内退位减法（一）班级学号姓名时间20 6 =14 6 =20 15=13 9=15 6 =13 6 =11 7 =16 7 =13 7=14 5 =15 8 =10 9 =12 6 =20 18=13 9 =13 7 =20 16=11 3 =13 4=10 1 =12 8 =12 7 =10 2 =20 5=12 9 =15 7 =14 6 =14 6 =10 1 =20 5 =13 7 =20 5 =12 8 =20 14=16 7 =20 6 =18 9 =20 13=14 8=13 5 =12 6 =13 7 =13 9 =18 9=17 9 =20 8

3、=15 7 =20 14=13 7=10 3 =20以内退位减法（二）班级学号姓名时间15-8 =14-5 =13-7 =10- 3=20 - 6 =14-8 =11-9 =20 - 13=17- 8=13-7 =16-9 =14-9 =14-5 =16- 8=11-2 =20- 14=11-4 =14-5 =15- 9=12-6 =12-9 =13-7 =10-4 =17- 8=16-9 =10-5 =10-7 =13-4 =11-6=12-7 =20 - 4 =20 - 9 =20 - 18=10- 5=20 - 8 =10-6 =20 - 14=12-5 =20- 15=20 - 7 =

4、20 - 19=20 - 7 =20 - 11 =12- 9=11-3 =20 - 15=20 - 16=15-9 =16- 9=10- 1 =20以内退位减法（二）班级学号姓名时间15-8 =14-5 =13-7 =10- 3=20 - 6 =14-8 =11-9 =20 - 13=17- 8=13-7 =16-9 =14-9 =14-5 =16- 8=11-2 =20 - 14=11-4 =14-5 =15- 9=12-6 =12-9 =13-7 =10-4 =17- 8=16-9 =10-5 =10-7 =13-4 =11-6=12-7 =20 - 4 =20 - 9 =20 - 18=

5、10- 5=20 - 8 =10-6 =20 - 14=12-5 =20- 15=20 - 7 =20 - 19=20 - 7 =20 - 11 =12- 9=11-3 =20 - 15=20 - 16=15-9 =16- 9=10- 1 =20以内退位减法（三）班级学号姓名时间20以内退位减法（三）班级学号姓名时间12-9 =20 - 1 =20 - 9 =20- 7=14-9 =11-5 =20 - 17=20 - 15=15- 8=12-3 =20- 17=11-5 =14-8 =10- 4=20 - 16=20 - 3 =10-5 =10-6 =17- 9=12-8 =20 - 1 =

6、14-5 =10- 1 =20- 5=12-3 =16-7 =11-7 =12-9 =10- 1 =16-9 =12-7 =18-9 =10-4 =20- 9=10-2 =12-5 =20 - 12=14-5 =12- 9=13-5 =13-9 =13-4 =20 - 2 =14- 5=20 - 13=10-5 =20 - 17=20 - 12=10- 4=20 - 4 =20以内退位减法（四）班级学号姓名时间20以内退位减法（四）班级学号姓名时间13-4 =12-5 =20 - 4 =20- 19=12-7 =14-7 =15-8 =20 - 12=20- 9=20 - 3 =11-7 =2

7、0 - 15=11-7 =12- 9=10-2 =12-4 =20 - 12=10-4 =15- 8=10-2 =16-9 =20 - 3 =20 - 3 =12-4=20 - 11 =20- 16=15-9 =12-3 =20- 4=12-3 =20 - 6 =20 - 1 =16-8 =14- 7=11-6 =14-7 =20 - 16=14-5 =20- 12=10-7 =11-4 =15-6 =12-7 =11-6=14-6 =15-7 =20 - 12=20 - 13=12- 6=10-9 =20以内退位减法（五）班级学号姓名时间10-3 =14-5 =20 - 2 =20- 14=

8、10-6 =14-5 =11-6 =11-2 =10- 9=14-5 =12-6 =11-5 =13-7 =10- 3=20 - 3 =10- 1 =15-8 =15-7 =13- 4=20 - 14=12-8 =17-9 =20 - 6 =10- 4=16-8 =10-4 =11-5 =10-3 =14- 6=20 - 3 =20 - 7 =12-4 =10-8 =20- 4=13-8 =13-5 =20 - 18=11-9 =10- 7=11-6 =12-5 =13-4 =10-7 =20- 12=20 - 19=16-8 =20 - 17=20 - 13=20- 9=17-9 =20以内

9、退位减法（五）班级学号姓名时间10-3 =14-5 =20 - 2 =20- 14=10-6 =14-5 =11-6 =11-2 =10- 9=14-5 =12-6 =11-5 =13-7 =10- 3=20 - 3 =10- 1 =15-8 =15-7 =13- 4=20 - 14=12-8 =17-9 =20 - 6 =10- 4=16-8 =10-4 =11-5 =10-3 =14- 6=20 - 3 =20 - 7 =12-4 =10-8 =20- 4=13-8 =13-5 =20 - 18=11-9 =10- 7=11-6 =12-5 =13-4 =10-7 =20- 12=20 -

10、 19=16-8 =20 - 17=20 - 13=20- 9=17-9 =20以内退位减法（六）班级学号姓名时间20以内退位减法（六）班级学号姓名时间20以内退位减法（七）班级学号姓名时间20 4 =18 9 =10 4 =12 3=16 7 =18-9 =11 9 =15 8 =10 8=10 2 =17 9 =17 9 =16 9 =20 8=20 4 =20 17=13 7 =16 8 =20 11 =13 9 =12 8 =14 5 =20 13=15 7=16 8 =14 5 =16 7 =12 8 =20 16=12 6 =10 3 =15 7 =17 9 =20 16=20 1

11、8=20 3 =10 5 =20 7 =12 7=11 3 =10 3 =11 7 =20 14=20 15=13 4 =20 11 =20 19=18 9 =20 18=14 7 =20以内退位减法（七）班级学号姓名时间20 4 =18 9 =10 4 =12 3=16 7 =18 9 =11 9 =15 8 =10 8=10 2 =17 9 =17 9 =16 9 =20 8=20 4 =20 17=13 7 =16 8 =20 11 =13 9 =12 8 =14 5 =20 13=15 7=16 8 =14 5 =16 7 =12 8 =20 16=12 6 =10 3 =15 7 =

12、17 9 =20 16=20 18=20 3 =10 5 =20 7 =12 7=11 3 =10 3 =11 7 =20 14=20 15=13 4 =20 11 =20 19=18 9 =20 18=14 7 =20以内退位减法（八）班级学号姓名时间20以内退位减法（八）班级学号姓名时间20以内退位减法（九）班级学号姓名时间20 6 =18 9=10 5 =10 9=20 7 =20 18=10 2 =10 7=20 16=20 1 =10 9 =15 7=17 8 =11 3=13 9 =12 6=11 8 =10 1 =10 8 =17 9=20以内退位减法（九）班级学号姓名时间20

13、6 =18 9=10 5 =10 9=20 7 =20 18=10 2 =10 7=20 16=20 1 =10 9 =15 7=17 8 =11 3=13 9 =12 6=11 8 =10 1 =10 8 =17 9=20以内退位减法（十）班级学号姓名时间12-4 =10-4 =20 - 6 =20- 17=14-5 =10-9 =10-7 =12-4 =16- 9=10-8 =16-9 =20 - 3 =11-2 =12- 5=20 - 4 =20 - 18=14-7 =11-5 =20- 12=20 - 13=20 - 15=20 - 7 =20 - 8 =10- 9=20 - 19=20 - 9 =12-8 =20 - 18=10- 7=10-9 =20 - 15=16-8 =15-9 =13- 5=20 - 18=15-8 =10-8 =10-2 =16- 9=13-9 =12-6 =10-5 =14-5 =20- 13=11-2 =20 - 19=12-3 =20 - 8 =20- 5=10-8 =20以内退位减法（十）班级学号姓名时间12-4 =10-4 =20 - 6 =20- 17=14-5 =10-9 =10-7 =12-4 =16- 9=10-8 =16-9 =20 - 3 =11-2 =12- 5=20 - 4 =20 - 18=14-7 =11

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