( )
3×5= 7×8= 4×9= 6×8= 6×9-9=
6×6= 4+2= 8×8= 9×9= 5×7+7=
5×6= 4×5= 6×4= 9×3= 3×5+9=
56+8=
42-7=
32+5=
43-6=
40+44=
22-7=
3+38=
72-40=
9+21=
30-6=
48+9=
7+67=
25+6=
31-7=
23+7=
□○□=□(只)
(只)