85
75
70
46
48
99
96
95
52-20=
52-2=
98-80=
98-8=
68-3=
68-30=
15-6=
4+9=
14-1=
18-8=
19-5=
9+10=
14-8=
11-5=
12-6=
11-4=
16-9=
16+3=
12-9=
11-7=
19-7=
(个)