80-57= 9×4= 42-(18+20)= 8×7-7=
7×8= 68+9= 6×9+8= 81-70=
9×3= 40+30= 35-25= 3×6+20=
36+30= 49-29= 61-4= 50+50= 25-5+40=
5+48= 54-11= 98-80= 100-70= 73-(4+5)=
14+7= 41-6= 58+40= 73-42=
91-69= 4×5= 3×6= 75-39=
43+30+9= 84-50+7= 86-7-30=
82-(65-40)= 90-(37+23)= 46+27-38=
1×1= 2×9= 3+8= 7×7-2=
3×6= 7×3= 3×8= 5×6+7=
25-5= 35+7= 4×7= 10-6+7=
40+30= 51-20= 30+8= 63-(6+4)=
96-60=
37+50=
80-8 =
25+9 =
63-6 =
79-30=
48+2=
20+45=
74-8=
75+7=
82-4=
42+33=
36+40+2=
59-9-20=
75-(10+50)=
63-30+5=
56+5-20=
48+(18-9)=