11-6=
13-7=
16-( )=8
( )+8=17
12-8=
11-2=
( )+4=16
18-( )=14
□○□=□( )
58 91 73
6+8= 13-8= 5+6= 16-9=
30+5= 12-4= 30+60= 44+40=
15-7= 84-80= 14-5= 36-30=
9+6= 13-5= 6+6= 8-8= 10-3+7=
18-10= 4+16= 11-5= 11-3= 2+10-8=
17-8= 7+1= 7+11= 6+0= 10+8-9=
12+6= 2+10= 15-5= 10-4= 16-3-3=
15-6= 16-9= 12-5= 11-3=
13-5= 15-6= 14-7= 13-7=
12-4= 16-7= 12-9= 17-9=
苹果可能有多少个?