13-59 11-4
8 13-7
12-5
14-77 9
14-5 17-8
16-7
12-12= | 17-7= | 16-6= | 15-7= |
13-7= | 16-7= | 12-4= | 17-10= |
17-8-3= | 13-4+9= | 14-7+5= | 11-5+7= |
___+7=13 14-___=6 16-___=8
3+___=12 11-___=7 5+___=14
缺了___块。
(个)
(支)
(只)
(页)
(个)