20 以内退位减法 练习题 (1) 学校: 班级: 姓名: 15-9= 12-6= 17-9= 18-9= 11-2= 20-1= 16-9= 16-8= 12-3= 15-6= 14-6= 13-6= 13-4= 15-9= 13-8= 15-8= 15-7= 13-7= 12-8= 14-9= 17-8= 12-6= 12-7= 12-4= 14-8= 13-9= 11-8= 12-9= 11-4= 11-6= 14-7= 11-7= 11-3= 14-9= 12-6= 12-7= 17-8= 12-4= 16-7= 11-8= 14-8= 12-9= 16-7= 14-7= 12-8= 11-8= 15-9= 14-7= 11-3= 14-6= 12-4= 14-6= 17-8= 13-8= 20-4= 13-8= 13-6= 15-7= 15-6= 15-8= 15-9= 17-8= 15-9= 14-7= 13-8= 14-8= 11-2= 15-9= 12-4= 11-4= 20-5= 15-7= 20-9= 11-3= 15-7= 17-8= 12-7= 20-6= 15-9= 12-8= 12-4= 20-7= 12-8= 14-6= 20-4= 12-8= 14-6= 13-8= 12-8= 14-6= 13-8= 15-7= 14-6= 13-8= 15-7= 20-8= 13-8= 20-7= 12-9= 15-8= 20 以内退位减法 练习题 (2) 学校: 班级: 姓名: 12-6= 17-9= 18-9= 11-2= 20-1= 16-9= 16-8= 12-3= 15-6= 14-6= 13-6= 13-4= 15-9= 13-8= 15-8= 15-7= 13-7= 12-8= 15-9= 17-8= 12-6= 12-7= 12-4= 14-8= 13-9= 11-8= 12-9= 11-4= 11-6= 14-7= 11-7= 11-3= 14-9= 12-6= 12-7= 17-8= 12-4= 16-7= 11-8= 14-8= 12-9= 16-7= 14-7= 12-8= 11-8= 15-9= 14-7= 11-3= 14-6= 12-4= 14-6= 17-8= 13-8= 20-4= 13-8= 15-6= 15-7= 15-6= 17-8= 14-7= 13-8= 14-8= 11-2= 12-4= 11-4= 20-5= 15-7= 20-9= 11-3= 15-7= 17-8= 12-7= 12-4= 14-8= 11-8= 12-9= 20-3= 20-5= 14-7= 12-7= 11-4= 11-3= 12-4= 11-8= 12-9= 12-4= 15-8= 14-7= 15-6= 12-9= 14-9= 20-6= 15-9= 12-8= 12-4= 20-7= 12-8= 14-6= 20-4= 12-8= 20 以内退位减法 练习题 (3) 学校: 班级: 姓名: 1) 13-4= 2) 13-5= 3) 12-4= 4) 11-4= 5) 14-8= 6) 17-9= 7) 12-6= 8) 13-5= 9) 17-9= 10) 12-7= 11) 14-9= 12) 14-8= 13) 11-8= 14) 11-2= 15) 11-5= 16) 16-7= 17) 15-9= 18) 16-8= 19) 13-5= 20) 11...