8+5=

17-8=

14-2=

17-12=

19-18=

20-2=

20-9=

4+12=

18+1=

16-2=

18-18=

19-14=

11-9=

16-4=

9+4=

12-12=

18-15=

14-9=

14+3=

4+15=

0+12=

1+12=

17-5=

18+2=

12-11=

8+8=

11-11=

7+10=

1+18=

20-7=

20-14=

12+2=

2+9=

14-4=

9+5=

16+4=

11-11=

18-10=

14+5=

14-9=

2+11=

4+10=

9+3=

15+4=

15-5=

16-2=

16-16=

9+9=

16+3=

18+2=