56-6= 57+5= 58-30= 70-30=
94-60= 36+60= 4+38= 85-7=
73-7= 3+78= 93-70= 70-9=
4+32= 73-3= 85-9= 83-50=
35-9= 5+49= 65-8= 57+40=
40-9= 40+53= 60+40= 47-8=
36+7= 100-20= 79+7= 92-70=?
46+7= 86-5= 46-5= 45-9=
58+7= 8+45= 76-60= 58-8=
98-70= 20+67= 42+30= 7+70=
65+20= 73-40= 85-7= 40+16=
70+6= 47-3= 34-6 98 70=
80-40= 35-8= 40+30= 49-6=
28-8= 83-40= 36-5= 86-4=
42+8= 6+45= 8+20= 90 9=
51+8= 63+6= 76-3= 84-4=
43+3= 73-30= 45-7= 33-20=
31-9= 59+9= 45-8= 56+30=