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1、20以内退位加减法口算练习（一）8+7=7+7=13-7 =6+ 6=7+4 =15-7=15-8 =124 =134 =158=189 =12-9 =13-8 =6+ 8=17-8 =13-8 =2+9=168 =148 =11-9 =9+2=15-6 =9+4=7+9=11-5 =11-2 =12-5 =189 =12-7 =123=8+4=8+3=136 =14-5 =146=12-4 =168 =4+9=7+7 =7+9 =11 4 =6+ 9=147 =12-8 =137=6+6=11-6 =188 =14-9 =8+6=11-9 =169 =157 =14-6 =11 2=5+7=
2、126 =17-9 =11-3 =16-8 =13-9 =14-6 =15-6 =167 =124=11-6 =9+7=5 + 9=3+8=14-9 =7+5=13-4 =13-5 =9+8=11 4=16-9 =5+8=4+ 7=16-7 =12-7 =11 7 =11 8 =167 =17-9 =139=8+8=167 =129 =159 =123=12-6 =11-2 =17-8 =11-8 =12-5 =15-9-2 =14-7+3 =13-6-3 =11-3+2 =16-9+7 =20以内退位加减法口算练习（二）4+7=9+6=13-8 =8+6=7+9 =14-9 =15-8 =1
3、24 =134 =16-8 =178 =14- 7 =13-7 =6+ 6=17-8 =15-6 =2+9=11 4 =148 =18-9 =9+9=13-8 =9+4=7+9=11-3 =17-9 =13-6 =123 =16-9 =129 =8+6=8+3=125 =14-5 =13-4 =12-8 =16- 8 =4+ 9=7+7 =7+ 9=11 4 =6+ 9=11 8 =16-7 =126 =12-6 =11-6 =188 =15-7=8+6=11-9 =14- 9 =11 9 =14-6 =124 =5+ 7=189 =11-2 =11-5 =13-9 =15-8 =16-6 =
4、11-6 =124 =16- 7 =15-6 =9+7=5+9 =3+8=11-2 =7+ 8=14- 6 =13-5 =9+8=16-8 =12-7 =5+ 6=8+7=12-8 =12-7 =17-9 =15- 7 =11 2 =11-7 =13-9 =8+8=137 =14-9 =169 =129 =137 =16-7 =17-9 =11-3 =12-3 =18-9-2 =11-7+5 =14-6+2 =#-9+2 =15-9+1 =20以内退位加减法口算练习（三）11-6 =8+7=124=7+6=5+7 =12-8=16-8 =13-7 =124 =159 =17-8 =12-9 =
5、13-8 =6+7=18-9 =16-8 =2+9=138 =11-2 =14-8 =16-7 =15-8 =9+9=7+5=15-9 =11-3 =12-3 =189 =16-7 =12-9 =5+9=8+5=178 =14-6 =14-8 =13-4 =158 =4+9=7+7 =7+4=11 6 =6+ 7=137 =12-8 =147=6+6=11-4 =11 3 =14-6 =8+6=11-8 =169 =167 =14-9 =11-2 =9+9=126 =17-9 =11-2 =13-9 =16-8 =14-6 =15-6 =139 =124 =11-6 =9+7=5+9 =3+8
6、=14-9 =7+8=13-4 =13-5 =9+8=11 4 =16-9 =5+8=6+ 7=12-7 =12-5 =11 2 =178 =167 =15-9 =139 =8+8=157 =123 =179 =125 =12-6 =11-7 =11-8 =11-9 =12-7 =11-9+4 =10-7+3 =18-9+7 =11-3+2 =11-9+8 =8+3=7+7=13-4 =9+9=7 + 4 =15-7=15-8 =127 =137 =156 =169 =12-5 =13-8 =6+8=17-8 =13-6 =2+9=11 6 =158 =14-9 =9+2=15-6 =9+4=
7、7+5=11-5 =11-2 =12-4 =129 =12-4 =123 =8+4=8+3=11 6 =14-5 =146 =12-7 =16-8 =3+9=7+7=7+9=11-9 =6+ 9=157 =12-8 =147 =6+6=11-6 =11-7 =11-9 =6+7=11-4 =18-9 =157 =12-3 =11 2 =5+7=12-4 =17-9 =11-7 =15-8 =13-9 =14-6 =16-8 =167 =126 =13-6 =9+7=5+9=5+8=16-9 =6+ 5=13-9 =13-5 =9+6=11 4 =14-9 =5+ 8=4+ 7=16-7 =12-7 =167 =13-9 =145 =15-9 =134 =8+3=11-7 =189 =11 5 =146 =12-5 =11-8 =17-8 =11-2 =12-6 =11-9+3 =15-7+2 =7+6+3=11-8+2 =18-9+1 二
