0+16=

15-13=

0+14=

11+8=

0+13=

4+14=

16-6=

15-4=

0+14=

20-3=

18-0=

12+0=

11-3=

20-17=

4+15=

13-7=

11+2=

12-6=

12+6=

14-11=

16+1=

19-7=

17+0=

8+6=

16+1=

19-2=

17-14=

18+1=

11+2=

14-3=

11-10=

13-0=

17-1=

18+1=

11-11=

18-9=

12-11=

11+5=

20-9=

19-12=

12+6=

15+3=

3+11=

10+10=

2+12=

4+10=

15-13=

19-18=

9+10=

11-0=