15-6= 13-5= 54-4= 11-7+6=
17-8= 11-6= 70-10= 14-9-2=
14-6= 75+4= 30+24= 20+30+40=
12-5= 18-9= 37+2= 40+60-70=
15﹣8=
7+33=
35+8=
59﹣7=
48﹣30=
56+30=
100﹣40=
70﹣20=
5+28=
25+7=
27﹣9=
50﹣6=
14-8= 15-7= 13-7= 8+6=
2+10= 8+3= 14-9= 11-6=
13-9= 16-6= 11-8= 18-9=
17-8-3= 13-4+9= 14-7+5= 11-5+7=
11-6+5= 17-7-3= 18-9-9= 6+9-8=