27+=80 35-=17 39-12=+12
-6=46 +12=30 45-15=-20
< < <
25+14=
48-23=
80-25=
100-60-20=
36+24=
50+50=
72+18=
25+10+20=
63-47= 38+26=
75-46-21= 43+(24+18)=
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)=