3+0=
3+2=
4+1=
5-4=
5-5=
5-2=
0+4=
3+1=
4-2=
3-1=
0+5=
2-2=
6-3= 4+4= 7-5= 2+6= 8-4=
9-7= 0+7= 6-6= 9-6= 7-3=
8-5= 2+8= 2+8-9= 10-6+3= 7-2+5=
17+2= 15-9= 5+7= 9-1+3=
19-6= 8-2= 8+4= 16-2+4=
16+4= 20-2= 6+7= 4+8-3=
11-4= 12-5= 8+3= 14+2-3=
17-3-7= 13+3-10= 11-4+6= 10-4+11=
8+4= ﹣2=10 13﹣=6 7+=12
6+=9 3+=10 2+>10 9-<2