75-70= 83-3= 3+30= 4+34= 5+40=
58-8= 72+6= 85-5= 67-7= 11-3=
7+9-10= 11-9+2=
12 - 5 =
19 - 7 =
41 - 8 =
17 + 8 =
34 + 6 =
41 + 30=
25 - 9 =
31 - 5 =
