11+6= | 15-8= | 7+12= | 12-9 |
13-6= | 6+14= | 18-6= | 20-0= |
15-9= | 14-5= | 16-7= | 5+10= |
5+915 14-94 168+8 917-9
12-8= | 13-5= | 10+9= | 14-5= |
18-9= | 5+8= | 12-3= | 15-6= |
13-8= | 17-9= | 14-7= | 16-8= |
16-7= | 18-9= | 15-8= | 16-6= |
10-3= | 11-2= | 9+6= | 6+8= |
5+8= | 7+9= | 8+8= | 7+6= |
原有 | 借出 | 还剩 | |
18个 | 9个 | 个 | |
15根 | 根 | 7根 | |
副 | 4副 | 8副 | |
17个 | 个 | 8个 |
15-5= | 18-8= | 9+9= | 17-6= |
7+8= | 13-2= | 14-3= | 16-10= |
19-2= | 12-2= | 16-2= | 6+6= |
10-8= | 10-2= | 9+8= | 5+7= |