36﹣4=
60﹣4=
68+12=
50+30+20=
100﹣60=
22+60=
13﹣8=
12+12﹣12=
□○□=□
15-7=
13-6=
11-8=
14-9=
79-70=
2+34=
80-40=
9+30=
51-2=
69-3=
16-7=
6+8=
100-40=
83-51=
55+45=
93-70=
60+22=
79-38=
94-90=
60+30=
76-6=
50+20=
87-60=
41+23=
32+23=
100-70=
2+37=
87-24=
20+80=
13-9=
42+16=
97-60=
50+3=