45+3=
30+9=
53+7=
42-5=
67-4=
86-80=
91-5=
28+6=
50+50=
50+5=
70-30=
48+6=
42+50=
35-7=
18+20=
54+40=
33+30=
56-8=
52+20=
65-5=
14 - 7 =
15 - 9 =
16 - 8 =
31 - 5 =
20 + 40 =
85 - 5 =
44 + 7 =
93-90=
15-7+3=
8+(90-50)=
47+30+20=
13-4= 25+8= 44-7= 17-9=
20+35= 97-70= 30+50= 53+9=
48-30= 80-5=
50+7= 8+6= 10-6= 30+8=
76-6= 13+5= 4+60= 28-20=
11-5= 9+3= 90+10= 98-8=
2+40= 13-8= 67-60= 20-20=
8+6= 75-75= 15-4= 80+7=