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1、一年级下册数学20以内退位减练习班级： 姓名： .11 - 9 = 11 - 8 = 11 - 7 = 11 - 6 =12 - 9 = 12 - 8 = 12 - 7 = 12 - 6 =13 - 9 = 13 - 8 = 13 - 7 = 13 - 6 =14 - 9 = 14 - 8 = 14 - 7 = 14 - 6 =15 - 9 = 15 - 8 = 15 - 7 = 15 - 6 =16 - 9 = 16 - 8 = 16 - 7 = 11 - 5 =17 - 9 = 17 - 8 = 11 - 4 = 12 - 5 =18 - 9 = 11 - 3 = 12 - 4 = 13
2、- 5 =11 - 2 = 12 - 3 = 13 - 4 = 14 - 5 = 11-9= 12-9= 13-9= 14-9= 15-9= 16-9= 17-9= 11-8= 12-8= 13-8= 14-8= 15-8=16-8= 17-8= 10-7= 11-7= 12-7= 13-7=14-7= 15-7= 16-7= 17-7= 10-6= 11-6=12-6= 13-6= 14-6= 15-6= 16-6= 17-6=10-5= 11-5= 12-5= 13-5= 14-5= 15-5=16-5= 17-5= 10-4= 11-4= 12-4= 13-4=14-4= 15-4= 1
3、6-4= 17-4= 10-3= 11-3=12-3= 13-3= 14-3= 15-3= 16-3= 17-3=10-2= 11-2= 12-2= 13-2= 14-2= 15-2=16-2= 17-2= 18-9= 19-9= 18-8= 18-7=18-6= 18-5= 18-4= 19-8= 19-7= 19-6=7+8-9= 6+5-8= 11-5+8= 3+8-2= 12-5+4=10-5+9= 8+4-7= 4+8-6= 13-5+4= 13-8+4=6+8-9= 7+5-8= 13-5+8= 5+8-6= 12-7+2=11-5+7= 8+3-7= 4+9-6= 13-7+6= 17-8+4=3+8-4= 6+6-8= 11-5+3= 3+8-5= 15-6+3=10-5+9= 9+4-7= 2+8-6= 14-5+6= 13-8+5=7+8-9= 5+7-6= 11-5+5= 3+9-2= 12-5-4=10-5+9= 8+4-7= 4+8-8= 13-8+4= 18-8+4=7+8-9= 6+7-8= 16-9+8= 6+8-7= 13-5+5=5+8-4= 6+5-7= 11-5+8= 3+9-8= 11-5+7=
