.
10-37 9-45 10-84
4+58 7-28 2+68
7-15 6+33 9-37
3+5= 4+2= 5-3= 9-2=
8-4= 7-2= 8-5= 2+6=
9-5= 4+3= 7+2= 9-6=
1
2
3
4
5
□○□=□(个)