71-6= 35-10= 30-6= 13-7+40=
34-4= 60+18= 32+8= 67-40+5=
25+7= 87-6= 2+54= 10+6+8=
57+3= 50+34= 9+61= 87-50= 81-20-6=
70-7= 3+56= 17-8= 23-6= 28-8+9=
13-6= 12-7= 62+30= 86-40= 4+26-8=
4+59= 38+5= 45+6= 24+8= 47-30+6=
48+7= 25-8= 49+5= 70+20+9=
31-5= 6+47= 15+8= 45-9-6=
63-4= 90-7= 58-9= 5+51+4=
54+8= 4+68= 61-6= 79-8-4=
18-9+34= 16+40+7= 8+63-70= 90-5-80=
12-7= 14-5 = 4+9= 15-6=
45-5= 60+5= 75-70= 57-50 =
40+( )=46 ( )-9=7 62-( )=60
6+( )=20 ( )-7= 12 ( )-7= 30
86-6+5= 15-4+8=
13-9+9= 50 +6-50 =