90-60=
15+74=
71+4=
8+38=
40+1=
36+50=
6+77=
3+94=
70-30=
40-20=
71-70=
23-5=
78+2=
34-5=
7+23=
30+36=
16-7=
40+22=
63+6=
22-10=
40-30=
90-80=
70-10=
38-20=
82+4=
53-2=
13+8=
8+36=
50-40=
76-7=
98-4=
78-3=
80+4=
9+83=
6+72=
37+45=
11-9=
38+2=
25-2=
38-3=