12-7= 13-9= 19-8=
14-8= 15-8= 14-9=
13-6= 14-6= 13-7=
15-4= 17-5= 14-7=
13-5= 12-5= 13-4=
12-8= 15-6= 16-9=
15-7= 17-9= 17-8=
16-8= 12-6= 14-5=
12-9= 15-9= 16-7=
11-5= 17-6= 19-0=
我用了_______________分_______________秒,對_______________道,錯_______________道。
11-5= 13-5= 15-6=
11-6= 13-6= 15-7=
11-7= 13-7= 15-8=
11-8= 13-8= 15-9=
11-9= 13-9= 16-7=
12-4= 14-5= 16-8=
12-5= 14-6= 16-9=
12-6= 14-7= 17-8=
12-7= 14-8= 17-9=
12-8= 14-9= 18-9=
我用了_______________分_______________秒,對_______________道,錯_______________道。
7+6= 3+8= 7+7=
8-5= 4+9= 8+8=
14-6= 14-9= 9+9=
18-9= 13-5= 4+6=
9+5= 4+8= 5+9=
8+3= 14-7= 6+7=
12-7= 15-8= 14-5=
16-8= 15-9= 12-9=
2+9= 6+9= 17-8=
12-5= 6+5= 13-7=
我用了_______________分_______________秒,對_______________道,錯_______________道。
18+0= 3+7= 6+4=
5+8= 4+9= 7+6=
16-8= 14-5= 9+5=
2+9= 13-9= 8+3=
15-6= 12-6= 4+3=
3+9= 11-8= 11-9=
14-7= 6+7= 13-8=
9+4= 4+8= 17-8=
13-7= 5+9= 18-9=
15-8= 6+9= 11-1=
我用了_______________分_______________秒,對_______________道,錯_______________道。
12-7= 13-9= 19-8=
14-8= 15-8= 14-9=
13-6= 14-6= 13-7=
15-4= 17-5= 14-7=
13-5= 12-5= 13-4=
12-8= 15-6= 16-9=
15-7= 17-9= 17-8=
16-8= 12-6= 14-5=
12-9= 15-9= 16-7=
11-5= 17-6= 19-0=
我用了_______________分_______________秒,對_______________道,錯_______________道。
11-5= 13-5= 15-6=